Stranded wire, cables, plaited bands and the like, of copper or aluminium, not electrically insulated

1. Scope and Applicability

This PCR applies to factory-gate production of bare, electrically uninsulated stranded wire, single-conductor cable, plaited or braided band, and like flexible assemblies made wholly from copper/copper-alloy wire or wholly from aluminium/aluminium-alloy wire. It covers bunch, concentric-lay, rope-lay, braid, and compacted constructions when their constituent wires are not electrically insulated from one another.

The foreground begins with received wire or wire rod. Drawing, intermediate annealing, degreasing, and cleaning are included only when performed by the reporting facility; stranding, bunching, braiding or equivalent assembly and final inspection are required. Metal production and purchased-wire manufacture remain upstream and require representative supplier datasets.

The PCR excludes solid single wire sold without stranding, insulated wire or multi-conductor insulated cable, optical-fibre cable, iron or steel wire rope, and products with a steel, polymer-composite, fibre or other non-copper/non-aluminium core. It also excludes installation, use, maintenance, and end-of-life. Reusable reels, drums, pallets, and other transport packaging are outside the reference product; if consumed or transferred with the product, each actual component must be added as a separate foreground exchange.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.fabricated-metal-products-except-machinery-and-equipment.stranded-wire-cables-plaited-bands-and-the-like-of-copper-or-aluminium-not-electrically-b5660514
classification_refs	CPC 3.0: 42942, exact classification context
covered_products	Bare stranded wire, bare single-conductor cable, plaited or braided band, and like assemblies made wholly from copper/copper-alloy wire or wholly from aluminium/aluminium-alloy wire
excluded_products	Solid single wire; electrically insulated wire or cable; optical-fibre cable; iron or steel wire rope; products with non-copper/non-aluminium cores; installation, use, and end-of-life
representative_product	Factory-gate bare stranded conductor supplied in a coil or on a reusable reel, with declared conductor metal and construction
production_route	Purchased ready-to-strand wire followed by stranding/bunching/braiding and inspection; integrated drawing, annealing, degreasing, cleaning and compaction are declared when performed
market_state	Bare, electrically uninsulated, dry, accepted product at the factory gate before non-reusable delivery packaging

3. Reference Flow

Field	Value
What	A bare flexible conductor or band formed by twisting, laying, bunching or braiding copper or aluminium wires into one uninsulated assembly
How much	1,000 kg accepted reference product at the factory gate
How well	Meets the declared drawing, strand-count, lay/braid, cross-sectional area, alloy, temper, coating, electrical-resistance, mechanical and dimensional specification
How long or cycle	One production lot through acceptance and factory-gate release; no use duration is represented
reference_flow_link	st_reference_product

Field	Value
Reference amount	1,000 kg
Reference product flow	Stranded wire, cable or plaited band of copper or aluminium, not electrically insulated
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	conductor metal and alloy; temper; wire coating if any; strand count and nominal strand diameter; construction type and lay/braid direction and length; compacted or uncompacted state; nominal cross-sectional area; mass per unit length; electrical-resistance test basis; factory and geography; reporting period; starting stock form and supplier boundary; integrated preparation steps; accepted-product and scrap accounting; delivery form

When constructing a foreground data package, the items listed in Required qualifiers must be declared in dataset metadata, process notes, reference flow comment, product description, or an equivalent data package field. Missing required qualifiers make the reference flow definition incomplete for that data package.

No exact public Tiangong mass flow represents the combined copper-or-aluminium reference-product boundary. The reference-product UUID therefore remains unresolved; an aluminium-only cable UUID was not used as a proxy for copper products.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	accepted reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Determine net dry metal-product mass on calibrated scales after acceptance. Exclude reusable carrier tare and non-reusable packaging. Normalize every reported exchange to 1,000 kg accepted product.
metal_mass_balance	copper or aluminium stock, product, scrap, work in progress and unexplained loss	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Keep copper and aluminium balances separate. Reconcile opening stock plus inputs against accepted product, recoverable scrap, other measured outputs, closing stock and quantified loss for the reporting period.
electricity_conversion	purchased electricity	Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66	MJ	Preserve the meter record in kWh and convert to the Tiangong reference unit using 3.6 MJ per kWh; state whether auxiliaries and internal distribution losses are included.
water_mass_conversion	process water and aqueous wastewater	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Prefer mass measurement. If volume is metered, convert with a measured or documented density at declared temperature and retain the source volume, density, and conversion record.
gas_reference_conditions	gaseous natural gas	Volume 93a60a56-a3c8-22da-a746-0800200c9a66	m3	Report volume at the supplier or meter reference temperature and pressure and disclose gross/net calorific-value convention; do not combine gas and electricity as one energy flow.

5. System Boundary

rule_id	Applies to	Rule	source_ids
boundary_factory_gate	foreground physical boundary	Include all on-site drawing, annealing, degreasing, cleaning, stranding, bunching, braiding, compaction, inspection, rework, internal handling and directly associated pollution-control operations performed before accepted bare product leaves the factory gate.	us-epa-nonferrous-forming-guidance-1989; aluminum-association-processing-101
boundary_upstream_stock	purchased metal stock and utilities	Model received copper wire, aluminium wire, energy, water and chemicals as individual inputs with upstream datasets representative of their declared geography, technology and delivery boundary; do not recreate primary metal production inside the foreground.	us-epa-nonferrous-forming-guidance-1989
boundary_no_insulation	insulation, sheathing and non-metal cores	Exclude insulation, sheathing, optical-fibre operations and non-copper/non-aluminium cores. A product using any such component is outside this PCR rather than a conditional route of this inventory.	un-cpc-3-0-structure-2025; nist-wire-cable-terminology-circular-37
boundary_site_specific_additions	site-specific exchanges	If the facility uses another concrete chemical, fuel, coating, packaging component, waste treatment input, waste output or elementary emission, add that one atomic exchange and its measured amount; never report an umbrella utility, chemical, waste or emissions row.	us-epa-nonferrous-forming-guidance-1989

Boundary Abstraction

Field	Value
declared_starting_condition	Received copper/copper-alloy wire or wire rod, or received aluminium/aluminium-alloy wire or wire rod, with metal, alloy, temper, diameter, coating, supplier, recycled-content claim and delivery boundary declared
starting_condition_role	Upstream product input to conditional preparation or directly to required stranding/braiding
product_classification_scope	Bare copper- or aluminium-wire stranded assemblies corresponding to the semantic boundary above; classification codes locate but do not define the PCR identity
recursive_input_rule	A purchased pre-stranded item in this same product category is recorded once as an external product input with its own upstream dataset and declared mass; its production is not recursively unfolded inside this foreground record
upstream_dataset_requirement	Use supplier-specific data where available; otherwise use a geographically and technologically representative dataset for each concrete wire, utility and chemical input, without double-counting processes performed on site
disclosure	Declare starting-stock form and gauge, preparation ownership, conductor construction, included auxiliaries, internal recycle loops, metal-scrap destination, water discharge route, reusable carrier treatment and any excluded shared services

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
wire_preparation	Wire drawing, annealing and cleaning	conditional	Include only the drawing, intermediate annealing, degreasing or cleaning operations performed by the reporting facility; omit when certified ready-to-strand wire is received	Foreground conductor-wire preparation	Exchanges attributable to wire used in 1,000 kg accepted reference product
stranding_and_finishing	Stranding, bunching, braiding, compaction and final inspection	required	Always include the actual assembly route and associated inspection, rework and directly associated auxiliaries	Foreground formation of accepted bare stranded product	1,000 kg accepted reference product at factory gate

Process: Wire drawing, annealing and cleaning (wire_preparation)

Inputs

Product flows

Copper wire stock entering preparation (dr_copper_wire_input)

Record this exchange only for a copper route when purchased copper wire crosses the facility boundary into on-site drawing, annealing or cleaning.

• Selected flow: copper wire da2d966d-fe62-44dc-ba0f-b1cd7c7cf33e
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net copper-wire receipt consumed by the included preparation operations, adjusted for opening and closing stock
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_materials
• Sources: us-epa-nonferrous-forming-guidance-1989

Aluminium wire stock entering preparation (dr_aluminium_wire_input)

Record this exchange only for an aluminium route when purchased aluminium wire crosses the facility boundary into on-site drawing, annealing or cleaning.

• Selected flow: Aluminum wire 89db8507-09bd-45f8-ba96-4e459058412c
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net aluminium-wire receipt consumed by the included preparation operations, adjusted for opening and closing stock
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_materials
• Sources: us-epa-nonferrous-forming-guidance-1989; aluminum-association-processing-101

Electricity for preparation equipment (dr_electricity)

Include separately metered or allocated electricity for drawing drives, annealing when electric, cleaning, pumps, filtration, exhaust and preparation-area auxiliaries.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66 / MJ
• Amount rule: measured preparation-area electricity converted from kWh to MJ
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_utilities
• Sources:

Process water for drawing or cleaning (dr_process_water)

Record water entering a water-based drawing-lubricant make-up, cleaning, rinsing or directly associated closed-loop system; exclude non-contact water that does not cross the process boundary.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net process-water input after separately quantified internal recirculation
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_utilities
• Sources: us-epa-nonferrous-forming-guidance-1989

Wire-drawing lubricant (dr_drawing_lubricant)

Record the specific neat oil, oil-in-water emulsion, soap solution or other lubricant actually introduced to on-site drawing. Internal recirculation is not a new input.

• Selected flow: Wire-drawing lubricant
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured fresh lubricant and concentrate additions net of documented returns to supplier
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_utilities
• Sources: us-epa-nonferrous-forming-guidance-1989

Natural gas for fuel-fired annealing (dr_natural_gas)

Record only natural gas combusted on site for annealing or directly associated thermal cleaning; do not use this row for purchased heat or another fuel.

• Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66 / m3
• Amount rule: metered natural-gas volume at declared reference conditions allocated to included preparation operations
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_utilities
• Sources: us-epa-nonferrous-forming-guidance-1989

Sodium hydroxide for alkaline degreasing (dr_sodium_hydroxide)

Record only sodium hydroxide introduced when an alkaline degreasing or cleaning bath is used. Declare supplied concentration and report as-delivered mass.

• Selected flow: Sodium hydroxide e0abcced-0611-4c24-9290-5a2c5a0c4169
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured as-delivered sodium-hydroxide product added to the included bath
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_utilities
• Sources: us-epa-nonferrous-forming-guidance-1989

Waste flows

Elementary flows

Outputs

Product flows

Prepared copper wire (dr_copper_wire_output)

Record only for the copper route. This is the mass of copper wire released from included preparation to stranding, not accepted final stranded product.

• Selected flow: copper wire da2d966d-fe62-44dc-ba0f-b1cd7c7cf33e
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured copper wire transferred to stranding, adjusted for preparation work in progress
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_materials
• Sources: us-epa-nonferrous-forming-guidance-1989

Prepared aluminium wire (dr_aluminium_wire_output)

Record only for the aluminium route. This is the mass of aluminium wire released from included preparation to stranding, not accepted final stranded product.

• Selected flow: Aluminum wire 89db8507-09bd-45f8-ba96-4e459058412c
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured aluminium wire transferred to stranding, adjusted for preparation work in progress
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_materials
• Sources: us-epa-nonferrous-forming-guidance-1989; aluminum-association-processing-101

Waste flows

Segregated copper wire scrap from preparation (dr_copper_scrap)

Record copper offcuts, breakage and rejected prepared wire leaving the process for internal or external recovery; record only for the copper route.

• Selected flow: Copper Scrap 4fbbb5f1-560a-4052-ba0c-652c5dfc282e
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net copper scrap leaving preparation, excluding material returned directly to the same work-in-progress balance
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_wastes
• Sources:

Segregated aluminium wire scrap from preparation (dr_aluminium_scrap)

Record aluminium offcuts, breakage and rejected prepared wire leaving the process for internal or external recovery; record only for the aluminium route.

• Selected flow: Aluminium Scrap 96c5f842-ea53-419b-b1cd-c02c479efb45
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net aluminium scrap leaving preparation, excluding material returned directly to the same work-in-progress balance
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_wastes
• Sources:

Spent wire-drawing lubricant (dr_spent_lubricant)

Record spent lubricant removed as a separate waste after filtration, centrifuging or other internal recycle; do not include aqueous wastewater in this row.

• Selected flow: Waste lubricating oil 9c1267ee-ba26-4c53-9643-89ae0c5764c4
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured mass of separately removed spent lubricant sent to treatment, recovery or disposal
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_wastes
• Sources: us-epa-nonferrous-forming-guidance-1989

Oily wire-drawing wastewater (dr_oily_wastewater)

Record aqueous effluent leaving the foreground after contact with drawing lubricant, metal or cleaning operations. Exclude water retained and reused internally.

• Selected flow: Oily wire-drawing wastewater containing suspended copper or aluminium solids
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured discharged mass, or measured discharge volume converted with documented density, before off-site treatment
• Value mode: Calculated value (calculated_value)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preparation_wastes
• Sources: us-epa-nonferrous-forming-guidance-1989

Elementary flows

Fossil carbon dioxide from on-site natural-gas combustion (dr_fossil_co2)

Record direct fossil carbon dioxide emitted to air only when fuel is combusted on site and the amount is measured by an emissions-monitoring or accepted site carbon-accounting record. Upstream electricity emissions are excluded.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured or accepted site-record fossil CO2 attributable to included preparation operations
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preparation_emissions
• Sources:

Process: Stranding, bunching, braiding, compaction and final inspection (stranding_and_finishing)

Inputs

Product flows

Copper wire entering stranding (st_copper_wire)

Record only for a copper product. The wire may be received ready to strand or transferred from wire_preparation, but the same mass must not be counted twice at the facility boundary.

• Selected flow: copper wire da2d966d-fe62-44dc-ba0f-b1cd7c7cf33e
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured copper-wire mass issued to stranding, adjusted for stranding-area opening and closing stock
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_stranding_materials
• Sources: nist-wire-cable-terminology-circular-37

Aluminium wire entering stranding (st_aluminium_wire)

Record only for an aluminium product. The wire may be received ready to strand or transferred from wire_preparation, but the same mass must not be counted twice at the facility boundary.

• Selected flow: Aluminum wire 89db8507-09bd-45f8-ba96-4e459058412c
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured aluminium-wire mass issued to stranding, adjusted for stranding-area opening and closing stock
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_stranding_materials
• Sources: nist-wire-cable-terminology-circular-37; aluminum-association-processing-101

Electricity for stranding and finishing (st_electricity)

Include electricity for stranding, bunching, braiding, compaction, take-up, inspection, rework and directly associated exhaust and controls.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66 / MJ
• Amount rule: measured line electricity plus causally allocated directly associated auxiliaries, converted from kWh to MJ
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_stranding_utilities
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Accepted bare stranded reference product (st_reference_product)

This is the accepted factory-gate product after the declared dimensional, electrical and mechanical checks. Rework that remains inside the process is not a separate output.

• Selected flow: Stranded wire, cable or plaited band of copper or aluminium, not electrically insulated
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: exactly 1,000 kg accepted net product by reference-flow definition
• Value mode: Fixed value (fixed_value)
• Specificity: Generic (generic)
• Normalization basis: 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Method formula (method_formula)
• Sources: un-cpc-3-0-structure-2025; nist-wire-cable-terminology-circular-37

Waste flows

Segregated copper wire scrap from stranding (st_copper_scrap)

Record copper wire offcuts, strand breakage and final rejects leaving the process for recovery or disposal; record only for the copper route.

• Selected flow: Copper Scrap 4fbbb5f1-560a-4052-ba0c-652c5dfc282e
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net copper scrap leaving stranding and finishing after internal rework returns
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_stranding_materials
• Sources:

Segregated aluminium wire scrap from stranding (st_aluminium_scrap)

Record aluminium wire offcuts, strand breakage and final rejects leaving the process for recovery or disposal; record only for the aluminium route.

• Selected flow: Aluminium Scrap 96c5f842-ea53-419b-b1cd-c02c479efb45
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: measured net aluminium scrap leaving stranding and finishing after internal rework returns
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1,000 kg accepted reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_stranding_materials
• Sources:

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_subdivision	independently metered lines and process steps	Avoid allocation by subdividing preparation and stranding operations and by using line meters, batch records and material issues whenever practicable.
allocation_rework	internal rework	Keep same-period rework circulating within the process inventory. Count only net external inputs, accepted product, waste leaving the foreground and period-end stock change.
allocation_scrap	copper or aluminium scrap	Report segregated scrap as a waste output at the measured foreground boundary. Do not subtract an avoided primary-metal burden or recycling credit inside this foreground inventory; apply any downstream recycling method outside the PCR foreground and disclose it.
allocation_shared_services	shared electricity, water, fuel and auxiliaries	Allocate shared services first by a measured causal driver such as line meter, machine time, throughput or furnace load. If no causal driver is available, use accepted product mass, document the affected share and test sensitivity for materially different conductor constructions.

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_preparation_materials	wire_preparation	copper/aluminium wire input and prepared-wire transfer	goods receipt, issue, transfer and stock record	metal; alloy; temper; coating; opening stock; receipts; issues; transfers; closing stock; lot; scale id	reconcile weighbridge, scale and enterprise records by metal and lot	kg	each receipt/transfer and monthly reconciliation	representative reporting year or declared campaign	all included preparation lines	net consumed or transferred mass divided by accepted reference-product mass and multiplied by 1,000	calibration record; supplier certificate; stock reconciliation; lot traceability
cp_preparation_utilities	wire_preparation	electricity, water, lubricant, natural gas and sodium hydroxide	meter, purchase, tank and bath-addition record	meter opening/closing; kWh; water volume/mass; gas volume and reference conditions; product mass; concentration; internal recycle; allocation driver	use dedicated meters where available; otherwise documented causal allocation from facility records	MJ, kg or m3 as applicable	continuous or each batch, reconciled monthly	representative reporting year or declared campaign	included preparation and pollution-control equipment	subtract documented internal returns, apply required unit conversion, divide by accepted reference-product mass and multiply by 1,000	meter calibration; invoices; batch sheets; allocation worksheet; concentration certificate
cp_preparation_wastes	wire_preparation	segregated metal scrap, spent lubricant and oily wastewater	scrap ticket, waste manifest, tank drawdown and discharge meter	waste identity; metal; mass/volume; density; origin; internal recycle; destination; treatment route; date	weigh each shipment or use calibrated tank/discharge records; keep internal recycle separate	kg	each shipment or discharge, reconciled monthly	representative reporting year or declared campaign	all included preparation lines and directly associated treatment	net mass leaving foreground divided by accepted reference-product mass and multiplied by 1,000	scale/meter calibration; waste manifest; destination receipt; density record; discharge log
cp_preparation_emissions	wire_preparation	direct fossil carbon dioxide	stack-monitoring or accepted site emissions record	source id; fuel; monitoring period; measured CO2 mass; operating hours; allocation driver; data gaps	use measured site record and allocate only the included source share	kg	continuous or reporting-period record	same period as activity data	on-site fuel combustion serving included preparation	attributable fossil CO2 divided by accepted reference-product mass and multiplied by 1,000	monitor QA/QC; emissions report; source-to-line allocation record
cp_stranding_materials	stranding_and_finishing	copper/aluminium wire input, accepted product and segregated scrap	material issue, production, inspection, rework, scrap and stock record	metal; alloy; construction; opening stock; issues; accepted mass; rework return; scrap mass; closing stock; lot; scale id	reconcile line and warehouse records by product lot and conductor metal	kg	each lot and monthly reconciliation	representative reporting year or declared campaign	all stranding, braiding, compaction and final-inspection lines	net input, accepted output and net outgoing scrap divided by accepted reference-product mass and multiplied by 1,000	calibration record; acceptance record; scrap ticket; stock reconciliation; lot traceability
cp_stranding_utilities	stranding_and_finishing	electricity	electricity meter and machine-time record	meter opening/closing; kWh; operating time; product lot; shared auxiliary load; allocation driver	dedicated line meter or documented causal allocation	kWh retained and MJ reported	continuous or per batch, reconciled monthly	representative reporting year or declared campaign	stranding and directly associated finishing equipment	convert kWh to MJ, divide by accepted reference-product mass and multiply by 1,000	meter calibration; machine log; allocation worksheet

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_normalization	every non-fixed inventory exchange	normalized amount = attributable reporting-period amount / accepted reporting-period product mass × 1,000	attributable exchange amount; accepted product mass in kg	exchange amount per 1,000 kg accepted reference product
calc_stock_adjusted_input	copper wire, aluminium wire, lubricant and chemicals	consumed amount = opening stock + receipts - returns to supplier - closing stock - documented transfer outside the included process	opening stock; receipts; returns; closing stock; transfers	stock-adjusted consumed mass
calc_electricity_mj	electricity rows	reported MJ = metered kWh × 3.6, followed by reference normalization	attributable kWh; accepted product mass	MJ per 1,000 kg accepted product
calc_metal_reconciliation	each conductor metal separately	unexplained metal difference = opening metal stock + external metal inputs - accepted product - outgoing same-metal scrap - other measured same-metal outputs - closing metal stock	metal-specific stock, input and output records	absolute and percentage unexplained metal difference

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	product and metal flows	Retain product specification, alloy/temper certificate, strand geometry, construction, coating status, insulation status and lot link; copper and aluminium routes must not be aggregated into one physical dataset.	specification; certificate of analysis; inspection record; lot genealogy
dq_measurement	mass, energy, gas and water records	Use calibrated devices within their valid range; retain raw readings, tare treatment, unit conversions, reference conditions and allocation worksheets.	calibration certificate; meter export; weigh ticket; conversion record
dq_temporal	foreground activity	Cover a representative twelve-month period or disclose a shorter campaign, shutdowns, abnormal lots and seasonal effects.	production calendar; downtime log; reporting-period statement
dq_completeness	all included processes	Reconcile purchase, meter, production, scrap, waste and stock records; investigate omitted baths, auxiliary systems, pollution controls and direct emissions before release.	reconciliation checklist; variance investigation; signed completeness review
dq_upstream	purchased wire, utilities and chemicals	Document supplier, geography, technology, delivery boundary, dataset vintage and any recycled-content claim; prevent double-counting on-site drawing or annealing in upstream wire data.	supplier declaration; upstream dataset metadata; boundary comparison
dq_unresolved_identity	UUID-empty rows	Keep the concrete flow name and foreground record, but do not substitute a proxy UUID. Resolve the reference product, wire-drawing lubricant and oily wastewater identities before publication.	finalized UUID-search review record; reviewer sign-off

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validation_reference_flow	functional unit and reference output	Confirm exactly 1,000 kg accepted bare product, carrier tare and packaging excluded, with every required qualifier declared.	un-cpc-3-0-structure-2025; nist-wire-cable-terminology-circular-37
validation_scope	product eligibility	Reject datasets for insulated, optical-fibre, iron/steel-rope or non-copper/non-aluminium-core products and reject solid wire sold without stranding.	un-cpc-3-0-structure-2025; nist-wire-cable-terminology-circular-37
validation_process_map	process coverage	Require stranding_and_finishing; require wire_preparation only when drawing, annealing, degreasing or cleaning is performed on site, and verify that upstream data do not duplicate those steps.	us-epa-nonferrous-forming-guidance-1989; aluminum-association-processing-101
validation_atomic_flows	inventory structure	Confirm every selected flow is one product, waste or elementary exchange; reject combined utilities, fuels, chemicals, packaging, wastes or emissions.
validation_metal_balance	copper and aluminium mass balance	Reconcile each conductor metal independently and require the site to define, justify and investigate its material unexplained-loss threshold; never offset a copper difference with aluminium.
validation_energy_and_water	electricity, gas and water	Verify electricity conversion, gas reference conditions, water-density conversion, meter coverage and internal-recycle treatment; reject double-counted recirculation.
validation_scrap_allocation	scrap and rework	Confirm internal rework is netted within the process, outgoing scrap is measured, destinations are disclosed and no avoided burden is subtracted inside the foreground.
validation_uuid_and_sources	identity and evidence	Verify every UUID at public state 100 with matching flow type, property and unit group; require explicit unresolved metadata for UUID-empty rows and original-text evidence for any future external numeric range.

10. Published Dataset Profile

Field	Value
dataset_role	Foreground factory-gate production dataset for a declared bare copper or aluminium stranded product
downstream_use	secondary_dataset; background_dataset after methodology review and resolution of publication blockers
allowed_use	Product-system studies in which conductor metal, construction, plant geography, production route, starting-stock boundary and delivery state match the declared dataset
excluded_use	Solid wire; insulated or optical cable; steel wire rope; composite/reinforced-core conductor; installation, use or end-of-life; substitution between copper and aluminium without a new foreground record
required_metadata	PCR id and version; conductor metal/alloy/temper; coating; construction and lay/braid; strand geometry; cross-section; mass per length; electrical test basis; factory/geography; period; starting stock; included preparation; upstream datasets; scrap destination; water route; allocation; delivery form
required_quality_disclosure	Meter and scale coverage; calibration; temporal representativeness; metal-balance result; stock adjustments; internal recycle; shared-service allocation; upstream boundary matching; data gaps; unresolved UUIDs; source and range limitations
update_trigger	Change in conductor metal/alloy, construction, coating, wire gauge, drawing or annealing technology, lubricant or cleaning system, energy supply, water/discharge route, scrap treatment, facility, upstream wire boundary, or a material change in energy, yield or waste performance

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	official_guidance	United Nations Statistics Division, Central Product Classification Version 3.0 Structure, 30 June 2025, official CSV, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv, retrieved 2026-09-05	Official CPC 42942 product identity and the electrically-uninsulated boundary
nist-wire-cable-terminology-circular-37	official_guidance	U.S. Bureau of Standards, Electric Wire and Cable Terminology, Circular No. 37, https://nvlpubs.nist.gov/nistpubs/Legacy/circ/nbscircular37.pdf, retrieved 2026-09-05	Bare conductor, strand, stranded-wire, cable, twisted and braided construction terminology
us-epa-nonferrous-forming-guidance-1989	official_guidance	U.S. Environmental Protection Agency, Aluminum, Copper, and Nonferrous Metals Forming and Metal Powders Pretreatment Standards: A Guidance Manual, 1989, https://www.epa.gov/sites/default/files/2016-08/documents/aluminum-copper-nonferrous-forming_pretreat-guidance_1989.pdf, retrieved 2026-09-05	Drawing, lubricant use and recycle, conditional annealing/degreasing/cleaning, and oil/metal-bearing waste streams
aluminum-association-processing-101	extension_guidance	The Aluminum Association, Processing 101, https://www.aluminum.org/processing-101, retrieved 2026-09-05	Aluminium rod-to-wire drawing and formation of electrical conductor by stranding several wires