Lighting sets used for Christmas trees, not solely for LED light sources

1. Scope and Applicability

This PCR applies to electrical lighting chains marketed for use on Christmas trees when the finished set contains at least one non-LED light source. It covers all-incandescent sets and mixed sets combining incandescent and LED modules, whether intended for indoor or outdoor use and whether connected in series, parallel, or a series/parallel combination. The product supplied at the factory gate includes its cable, lamp holders, light-source modules, plug or extra-low-voltage power supply when supplied, controller when supplied, and sales packaging.

Sets designed to use only LED light sources, general-purpose luminaires, rope lights, replacement lamps sold separately, Christmas trees, batteries sold separately, and decorative products without an electrical lighting function are excluded. The mandatory production boundary is cradle-to-factory-gate assembly and packaging from received components. Use and end-of-life are conditional modules included only when the study goal requires a lifecycle model.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.electrical-machinery-and-apparatus.lighting-sets-used-for-christmas-trees-not-solely-for-led-light-sources
classification_refs	CPC 3.0: 46532, exact
covered_products	Christmas-tree lighting chains containing at least one non-LED light source, including all-incandescent and mixed incandescent/LED sets
excluded_products	Lighting sets designed solely for LED light sources; general luminaires; rope lights; separately sold replacement lamps; non-electrical decorations; Christmas trees
representative_product	A packaged mains-powered or extra-low-voltage Christmas-tree lighting chain with insulated copper cable and miniature incandescent lamps; LED modules and a controller may also be present
production_route	Receipt of finished components, cable cutting and termination, lamp-holder and source-module fitting, electrical test, final assembly, and packaging
market_state	Finished, tested, packaged lighting set at the factory gate

3. Reference Flow

Field	Value
What	Provide decorative electric lighting on a Christmas tree using a lighting chain that is not solely LED
How much	One complete lighting set with its supplied electrical accessories and sales packaging
How well	Meets the declared rated voltage, input power, circuit arrangement, indoor/outdoor rating, ingress-protection claim where applicable, lamp count, light-source technology mix, and applicable safety conformity
How long or cycle	One declared product service life, with rated or warranted operating life and expected annual operating hours stated when use is modelled
reference_flow_link	reference_product_output

Field	Value
Reference amount	1
Reference product flow	Finished Christmas-tree lighting set, not solely LED
Reference flow property	Number of items 01846770-4cfe-4a25-8ad9-919d8d378345
Reference unit group	Units of items 5beb6eed-33a9-47b8-9ede-1dfe8f679159
Reference unit	Item(s)
Required qualifiers	total cable length; number of light sources; count and technology of non-LED light sources; LED module count when present; replaceable or non-replaceable source construction; series, parallel, or series/parallel arrangement; rated input voltage; rated input power; mains-direct or extra-low-voltage supply; indoor or outdoor rating; ingress-protection rating when claimed; controller functions when present; total product mass excluding and including packaging; packaging composition; production geography and reference year; declared service life and operating-hours scenario when use is modelled

When constructing a foreground data package, all required qualifiers must be declared in dataset metadata, process notes, the reference-flow comment, the product description, or an equivalent data-package field. A missing qualifier makes the reference-flow definition incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
mu_reference_count	reference product	Number of items	Item(s)	Normalize the dataset to exactly one complete saleable lighting set; state the number of sets represented by each production record before normalization.
mu_component_mass	component and packaging inputs	Mass	kg	Record net mass entering the model for each separately identified component or package; do not substitute purchase count unless a measured representative mass per item and the counted quantity are retained.
mu_electricity_energy	assembly and use electricity	Net calorific value	MJ	Preserve metered electricity and convert kWh to MJ using 1 kWh = 3.6 MJ; disclose whether transformer and standby losses are included.
mu_use_calculation	conditional use phase	Net calorific value	MJ	Calculate electricity from declared measured rated input power, operating hours, duty cycle, and service life; model each declared mode separately before summing.

5. System Boundary

The required foreground boundary starts when identified lighting-chain components and packaging enter the reporting facility and ends when one tested, packaged set leaves the factory gate. Supplier production of cable, lamps, modules, holders, plugs, power supplies, controllers, boxes, and bags is represented by compatible upstream datasets and must not be repeated as foreground manufacture unless the reporting facility actually performs it. Use and end-of-life are separate conditional modules.

rule_id	Applies to	Rule	source_ids
sb_category_boundary	product eligibility	Include only a Christmas-tree lighting chain containing at least one non-LED light source; reject a set designed solely for LED sources from this PCR.	un-cpc-3-0-structure-2025
sb_production_boundary	required cradle-to-gate dataset	Include received-component transport when within the declared study boundary, cable cutting and termination, source and holder fitting, controller or power-supply fitting when present, electrical testing, rework, rejects, packaging, and site energy attributable to the product.	iec-60598-2-20-2022
sb_upstream_components	purchased components	Link each received component to a compatible upstream product dataset and prevent double counting of component manufacture.
sb_optional_lifecycle	use and end-of-life modules	Include use and end-of-life only when required by the declared study goal; retain their assumptions separately from the mandatory production result.	eu-weee-directive-2012-19

Boundary Abstraction

Field	Value
declared_starting_condition	Identified, quality-accepted lighting-chain components and packaging at the reporting facility receiving point
starting_condition_role	Foreground assembly starting condition; upstream component production remains linked background supply
product_classification_scope	Christmas-tree lighting sets containing at least one non-LED light source; solely LED sets are outside scope
recursive_input_rule	If a complete lighting set in this same category enters for repacking, rework, or bundling, record it once as a same-category product input and do not recursively expand it inside this foreground assembly dataset; disclose the upstream dataset used
upstream_dataset_requirement	Use geography-, technology-, material-, and time-representative datasets for every received component and packaging flow; disclose proxies and unrepresented mass
disclosure	Declare facility location, reporting period, purchased-versus-made component boundary, product configuration, reference amount, cut-off decisions, rework treatment, packaging boundary, and whether use or end-of-life modules are included

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
final_assembly_and_test	Cable preparation, lighting-set assembly, electrical test, and rework	required	Always included	Foreground production	1 saleable finished lighting set
packaging	Sales packaging	required	Always included for the factory-gate reference product	Foreground packaging	1 packaged finished lighting set
use_phase	Electricity consumption during declared use	conditional	Include only for lifecycle studies with a declared operating scenario	Downstream use	1 lighting set over its declared service life
end_of_life	Collection of the discarded lighting set	conditional	Include only when end-of-life lies within the study boundary	Downstream end-of-life	1 discarded lighting set

Process: Cable preparation, lighting-set assembly, electrical test, and rework (final_assembly_and_test)

Inputs

Product flows

Insulated copper lighting-chain cable (insulated_copper_cable_input)

Record the measured mass of insulated copper cable consumed, including cable in saleable sets and attributable cutting loss.

• Selected flow: Insulated copper electrical cable for lighting chain
• Flow property / unit: Mass / kg
• Amount rule: measured net cable input allocated to saleable output and attributable rejects
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_component_bom
• Sources:

Miniature incandescent lamps (incandescent_lamp_input)

Record all miniature incandescent lamps entering assembly. At least one non-LED light source must remain in the finished reference product.

• Selected flow: Miniature incandescent electric lamp
• Flow property / unit: Mass / kg
• Amount rule: measured mass of accepted and installed lamps attributable to one finished set
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_component_bom
• Sources: un-cpc-3-0-structure-2025

LED modules for a mixed-source set (led_module_input)

Record LED modules only when the finished set combines LED and non-LED light sources. Do not use this row for a solely LED set.

• Selected flow: LED module f0e13a6e-6380-4372-98a0-899623339d91
• Flow property / unit: Mass / kg
• Amount rule: measured mass of LED modules installed in the mixed-source finished set; not applicable when absent
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 complete mixed-source finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_component_bom
• Sources:

Thermoplastic lamp holders (lamp_holder_input)

Record the measured mass of moulded thermoplastic lamp holders or sockets installed in the set.

• Selected flow: Thermoplastic electric lamp holder for lighting chain
• Flow property / unit: Mass / kg
• Amount rule: measured mass installed in saleable output and attributable rejects
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_component_bom
• Sources:

Household mains plug (mains_plug_input)

Record the measured mass of the mains plug when a mains-direct plug is supplied as part of the set.

• Selected flow: Household mains electrical plug
• Flow property / unit: Mass / kg
• Amount rule: measured mass of the supplied mains plug; not applicable when the set has no mains plug
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_component_bom
• Sources:

Extra-low-voltage power supply (power_supply_input)

Record the measured mass of the AC/DC power supply when supplied with an extra-low-voltage lighting set.

• Selected flow: Extra-low-voltage AC/DC power supply adapter
• Flow property / unit: Mass / kg
• Amount rule: measured mass of the supplied power supply; not applicable when no separate power supply is supplied
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_component_bom
• Sources:

Electronic lighting controller (lighting_controller_input)

Record the measured mass of the electronic controller when the finished set provides flashing, dimming, sequencing, timing, or similar control.

• Selected flow: Electronic lighting controller assembly
• Flow property / unit: Mass / kg
• Amount rule: measured controller mass; not applicable when the finished set has no controller
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_component_bom
• Sources:

Assembly and electrical-test electricity (electricity_assembly_input)

Record electricity consumed by cable preparation, assembly, electrical testing, rework, and directly attributable support equipment.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: submetered electricity or documented allocation from a facility meter, converted to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_assembly_energy
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Finished Christmas-tree lighting set (reference_product_output)

Record saleable sets that passed the declared electrical and visual acceptance tests. This is the reference product output.

• Selected flow: Finished Christmas-tree lighting set, not solely LED
• Flow property / unit: Number of items / Item(s)
• Amount rule: exactly 1 complete saleable set after normalization
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: PCR reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_production_outputs
• Sources: un-cpc-3-0-structure-2025

Waste flows

Insulated cable offcuts (cable_offcut_waste)

Record composite insulated copper cable offcuts leaving the assembly process as waste; do not record recovered clean copper under this row.

• Selected flow: Waste insulated copper electrical cable offcuts
• Flow property / unit: Mass / kg
• Amount rule: measured mass leaving the assembly boundary as cable offcut waste
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_production_outputs
• Sources:

Defective finished lighting sets (defective_set_waste)

Record fully or substantially assembled lighting sets discarded after failed test and not reworked into saleable output.

• Selected flow: Defective Christmas-tree lighting set manufacturing waste
• Flow property / unit: Mass / kg
• Amount rule: measured mass of defective sets sent to waste treatment, excluding successfully reworked units
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 complete finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_production_outputs
• Sources:

Elementary flows

Process: Sales packaging (packaging)

Inputs

Product flows

Corrugated board box (corrugated_box_input)

Record the net mass of each corrugated board box supplied with the reference product.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: measured box mass supplied with one finished set
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 packaged finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_bom
• Sources:

Polyethylene packaging bag (polyethylene_bag_input)

Record the net mass of the polyethylene bag when one is supplied around or within the sales package.

• Selected flow: Polyethylene bag 10647902-9822-4b06-bc95-f1f30f10c261
• Flow property / unit: Mass / kg
• Amount rule: measured bag mass supplied with one finished set; not applicable when absent
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 packaged finished lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_packaging_bom
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Elementary flows

Process: Electricity consumption during declared use (use_phase)

Inputs

Product flows

Use-phase electricity (electricity_use_input)

Calculate electricity only for a declared operating scenario, using measured rated input power and declared operating time. State geography, grid dataset, service life, duty cycle, controller mode, and transformer or standby losses.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: rated input power in kW × operating hours × duty cycle × 3.6 MJ/kWh over declared service life
• Value mode: Calculated value (calculated_value)
• Specificity: Scenario-specific (scenario_specific)
• Normalization basis: per 1 lighting set over the declared service life
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_use_scenario
• Sources: iec-60598-2-20-2022

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Elementary flows

Process: Collection of the discarded lighting set (end_of_life)

Inputs

Product flows

Waste flows

Discarded lighting set (end_of_life_set_waste)

Record the discarded product as waste electrical and electronic equipment when end-of-life lies within the study boundary. Packaging waste is not included in this row.

• Selected flow: Waste electrical and electronic equipment 631c740a-468f-41e8-9513-72bb25121958
• Flow property / unit: Mass / kg
• Amount rule: measured product mass excluding packaging, adjusted by the declared collection rate when the scenario does not collect all discarded sets
• Value mode: Calculated value (calculated_value)
• Specificity: Scenario-specific (scenario_specific)
• Normalization basis: per 1 discarded lighting set
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_end_of_life_scenario
• Sources: eu-weee-directive-2012-19

Elementary flows

Outputs

Product flows

Waste flows

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
al_subdivision_first	shared assembly and packaging operations	Subdivide or submeter product-specific operations wherever records permit before applying an allocation.
al_shared_operations	shared electricity and support operations	When subdivision is not possible, allocate shared burdens using a documented physical driver causally related to the operation, such as machine time, tested-set count, or measured throughput; do not use revenue unless no defensible physical driver exists.
al_rework_and_rejects	rework and rejected products	Assign rework energy and consumed components to the production lot that caused them; exclude successfully reworked units from waste output and include unrecovered defective sets as waste.
al_recycling	recyclable production waste and end-of-life material	Report waste treatment and any recycling credit separately. Do not subtract an avoided-product credit inside the foreground inventory unless the declared study method requires it, in which case disclose the method and substituted product.	eu-weee-directive-2012-19

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_component_bom	final_assembly_and_test	received components installed or lost	approved bill of materials, purchase receipts, issue records, and representative component weighing	component identity; supplier; material or technology; units issued; units returned; measured unit mass; product configuration; accepted output count	Reconcile BOM and stock issues to the reporting lot and verify representative masses on calibrated scales	kg and Item(s)	Each product configuration and production lot	Complete reporting period, normally at least 12 consecutive months or the full campaign	All facilities producing the declared reference product	Sum net issued mass by atomic component and divide by saleable-set output; retain losses in the applicable waste row	BOM revision, supplier specification, scale calibration, stock reconciliation, and lot records
cp_assembly_energy	final_assembly_and_test	assembly and test electricity	submeter or facility electricity meter with allocation record	meter start and end; kWh; equipment scope; operating time; tested-set count; allocation driver; transformer or standby inclusion	Prefer product-line submetering; otherwise reconcile to facility invoices and allocate with a documented physical driver	kWh, converted to MJ	Monthly and each production campaign	Same period as production output	All assembly and test operations in the declared boundary	Sum attributable kWh, convert to MJ, and divide by saleable-set output	Meter calibration or invoice reconciliation and allocation worksheet
cp_production_outputs	final_assembly_and_test	saleable output and manufacturing wastes	production count, test log, rework log, and waste scale ticket	produced count; passed count; reworked count; rejected count; waste identity; gross and tare mass; treatment destination	Reconcile test disposition to production counts and weigh each segregated waste stream	Item(s) and kg	Each lot; wastes at each shipment	Same period as component and energy records	All included assembly facilities	Normalize passed output to one set; divide each net waste mass by passed-set count	Test records, rework disposition, calibrated scale evidence, and waste transfer note
cp_packaging_bom	packaging	sales packaging supplied	packaging BOM, supplier specification, and representative weighing	package identity; material; grade; recycled content; unit mass; units per set; supplier	Weigh each packaging component and reconcile count per finished set	kg and Item(s)	Each packaging specification change and representative lot	Same period as reference product	Packaging applied to the declared product	Multiply verified unit mass by units per set and normalize to one packaged set	Packaging drawing, supplier specification, scale calibration, and BOM revision
cp_use_scenario	use_phase	electricity during use	product electrical test and declared scenario	measured input power by mode; operating hours per year; duty cycle; service life; transformer losses; standby power; geography; grid dataset	Measure input power for the declared configuration and combine it with an explicitly named operating scenario	W, h, years, and MJ	Each product configuration and scenario revision	Measurement date and scenario reference year stated	Declared market and use geography	Sum mode-specific kW × hours × duty cycle, multiply by service years, and convert kWh to MJ	Calibrated power measurement, rated label, scenario rationale, and calculation worksheet
cp_end_of_life_scenario	end_of_life	discarded electrical equipment	product weighing and collection/treatment scenario	product mass excluding packaging; collection rate; treatment route; geography; reference year	Weigh the product and apply only a documented scenario-specific collection rate	kg and fraction	Each product configuration and scenario revision	Scenario reference year stated	Declared market and collection geography	Product mass × declared collection rate per discarded set	Scale calibration, scenario source, collection-system description, and treatment route

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_normalization	all production inventory rows	normalized amount = reporting-period attributable amount ÷ saleable finished-set count	atomic input, energy, or waste amount; passed-set count	amount per 1 finished lighting set
calc_component_reconciliation	component inputs	net component input = opening stock + receipts − closing stock − documented returns; reconcile net input to product mass, waste, and inventory change	stock, receipts, returns, product mass, waste mass	reconciled component mass
calc_electricity_mj	electricity rows	electricity in MJ = metered or calculated electricity in kWh × 3.6	kWh	MJ
calc_use_electricity	electricity_use_input	MJ = sum over declared modes of input power in kW × operating hours × duty cycle × service years × 3.6	measured power, hours, duty cycle, service life	use-phase electricity in MJ per set	iec-60598-2-20-2022
calc_eol_waste	end_of_life_set_waste	collected waste mass = product mass excluding packaging × declared collection rate	product mass and collection rate	kg of waste electrical and electronic equipment per discarded set	eu-weee-directive-2012-19

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_identity	product and components	Retain model number, BOM revision, source-technology mix, lamp count, circuit arrangement, rated voltage and power, cable length, indoor/outdoor rating, and supplied accessories for each reported configuration.	Product specification, label photograph, BOM, and test record
dq_temporal	foreground production	Component, output, waste, and energy records must cover the same period; disclose campaign data shorter than 12 months and any seasonal representativeness limitation.	Dated source records and coverage reconciliation
dq_completeness	cradle-to-gate inventory	Reconcile all component and packaging mass to saleable product, manufacturing waste, documented returns, and inventory change; quantify excluded mass and justify every cut-off.	Mass reconciliation and cut-off register
dq_measurement	mass, count, and electricity	Use calibrated instruments or reconciled commercial records; retain conversion factors and uncertainty or allocation evidence.	Calibration certificates, invoices, meter records, and calculation worksheets
dq_background	upstream datasets	Document geography, technology, reference year, material grade, and proxy status for each component and packaging dataset.	Background-dataset mapping table
dq_scenarios	use and end-of-life	Keep production results separate from conditional scenario results and disclose every power, duty-cycle, lifetime, collection, and treatment assumption.	Scenario record and module-separated result table

9. Validation Rules

rule_id	Applies to	Rule	source_ids
vr_category_eligibility	product identity	Confirm that at least one installed light source is non-LED and that the product is marketed as a Christmas-tree lighting set; reject solely LED lighting sets.	un-cpc-3-0-structure-2025
vr_reference_flow	reference flow	Confirm exactly one complete saleable set, including supplied accessories and sales packaging, and all required qualifiers.	iec-60598-2-20-2022
vr_inventory_balance	production inventory	Confirm component and packaging mass reconciliation, passed-set count, rework disposition, waste mass, and any excluded mass for the same reporting period.
vr_atomic_flows	all inventory rows	Confirm that each row represents one atomic product, waste, or elementary exchange and that no row combines utilities, materials, packaging, or wastes.
vr_electricity	electricity rows	Confirm that electricity is reported in MJ, that each kWh conversion uses 3.6 MJ/kWh, and that grid geography and losses are disclosed.
vr_optional_modules	use and end-of-life	If included, confirm that use and end-of-life assumptions are scenario-specific, separately reported, and not embedded in the cradle-to-gate result.	eu-weee-directive-2012-19

10. Published Dataset Profile

Field	Value
dataset_role	Foreground production dataset suitable for publication as a secondary_dataset or background_dataset after review; optional use and end-of-life modules remain separate lifecyclemodel projections
downstream_use	Product-footprint, supply-chain, and lifecycle models for Christmas-tree lighting sets containing at least one non-LED source
allowed_use	The declared product configuration, production geography, technology, reporting period, and explicitly documented lifecycle scenarios
excluded_use	Solely LED lighting sets; general luminaires; products with materially different source technology, voltage class, packaging, geography, or production route without representativeness review
required_metadata	PCR id; product model and BOM revision; reference amount; all required qualifiers; facility and market geography; reporting period; boundary; allocation; cut-offs; source-technology mix; packaging; upstream dataset mapping; optional-module status
required_quality_disclosure	Primary-data share; temporal coverage; mass and energy reconciliation; measurement and allocation evidence; proxy datasets; excluded mass; uncertainty limitations; use and end-of-life assumptions when present
update_trigger	BOM or source-technology change; change between mains-direct and extra-low-voltage supply; rated-power or controller change; cable or packaging redesign; supplier or geography change; new production technology; reporting data older than the declared validity period; material change to use or end-of-life scenarios

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	dataset	United Nations Statistics Division, CPC Version 3.0 structure, 30 June 2025, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv (retrieved 2026-09-04)	Official CPC 46532 product identity and exclusion of sets solely using LED light sources
iec-60598-2-20-2022	standard	IEC 60598-2-20:2022, Luminaires — Part 2-20: Particular requirements — Lighting chains, https://webstore.iec.ch/en/publication/73916 (retrieved 2026-09-04)	Lighting-chain identity; series, parallel, and series/parallel configurations; indoor/outdoor application; rated-voltage and product-qualification fields
eu-weee-directive-2012-19	standard	Directive 2012/19/EU of the European Parliament and of the Council on waste electrical and electronic equipment, https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32012L0019 (retrieved 2026-09-04)	Conditional end-of-life scope, separate collection, and waste electrical/electronic equipment treatment disclosure