ENERGY STAR® Program Requirements for
Decorative Light Strings
Eligibility Criteria
Draft Version 1.1
Table of Contents
Section 1. Definitions	2
Section 2. Reference Standards	2
Section 3. Qualifying Products	3
Section 4. Energy-Efficiency Specifications for Qualifying Products	3
Table 1. Product Characteristics and Specifications for Decorative Light Strings	3
Section 5. Product Approval	3
Section 6. Warranty	3
Section 7. Packaging	4
Section 8. Testing Criteria	4
Section 9. Effective Date	4
Section 10. Future Specification Revisions	4
References	4
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ENERGY STAR
ENERGY STAR® Program Requirements for
Decorative Light Strings
Eligibility Criteria
Draft Version 1.1
Below is the product specification (Draft Version 1.1) for ENERGY STAR qualified decorative light
strings. A product must meet all of the identified criteria if it is to be labelled as ENERGY STAR
by its manufacturer.
The intent of the ENERGY STAR initiative in Canada in this product category is to reduce
seasonal peak electricity consumption by encouraging Canadian consumers to use energy-
efficient decorative strings.
1) Definitions:
A.	Decorative Light String - String of lamps used for a decorative purpose. The lamps may
be sealed or unsealed.
B.	Series Block - A number of lamps connected in series, or utilizing a series connection.
Additional series blocks can be added to the circuit (or light string) utilizing parallel
connections. For example, a 50-lamp light string could have two 25-lamp series blocks
connected in parallel.
C.	Brightness - Luminous flux emitted from a surface per unit solid angle per unit of area,
projected onto a plane normal to the direction of propagation (lv). Also known as luminous
sterance. Intensity is specified in terms of millicandela (mcd).
D.	Maintained Brightness - The light output of a lamp as a percentage of its initial brightness
after a 100-hour seasoning period.
E.	Useful Life - The length of time a light source takes, when operated at an ambient
temperature of 35°C, to reach 50% (L50%) of its initial brightness after a 100-hour
seasoning period.
F.	Viewing Angle - The spatial radiation pattern of the light emitted, indicating the degree of
beam spread.
G.	Input Power - The total, or system, power used by the decorative string during operation,
measured in watts (W), including transformers, adaptors, etc.
H.	Maximum Watts per Lamp - The input power divided by the number of lamps on the
decorative light string.
2) Reference Standards: ENERGY STAR qualified decorative holiday strings shall comply with
the applicable safety standards and relevant clauses from UL, CSA and other global
standards organizations, unless the requirements of the ENERGY STAR specification are
more restrictive. Relevant standards include, but are not limited to
ENERGY STAR Program Requirements for Decorative Light Strings
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Canadian Standards Association (CSA)
CSA-22.2 No.37-M1989 (R2004) Christmas Tree and Other Decorative Lighting Outfits
Underwriters Laboratories Inc. (UL)
UL 588-2004, Standard for Seasonal and Holiday Decorative Products
Powertech Labs Inc. / BC Hydro
Powertech Labs/BC Hydro Decorative Light String Test Protocol Draft Version 1.1.
developed by Powertech Labs for BC Hydro.
3) Qualifying Products: In order to qualify for the ENERGY STAR label, any decorative light
strings must meet the definition in Section 1 .A and the specification requirements provided in
Section 4, below.
4) Energy-Efficiency Specifications for Qualifying Products: Only those products that
comply with the requirements of Section 2 and meet the following criteria in Table 1 may
qualify for ENERGY STAR.
Energy Efficiency Characteristics
Specification
Maximum watts per lamp
0.1 watts
Electrical Characteristics

Nominal operating voltage
120 Volts
Voltage sag / surge
± 10%
Physical Characteristics

Plug / plug-ins
Polarized
Double strings
Two opposite polarity groups (balanced)
Visibility Characteristics

Lifetime claim
25,000 hours (or 'long-lasting')
Brightness (depends on color)
Minimum: TBD lv (mcd)
Maximum: TBD lv (mcd)
Minimum viewing angle, measured
relative to mechanical centre
60°
All performance measurements, except for lifetime, must be conducted according to the
"Powertech Labs/BC Hydro Decorative Light String Test Protocol Draft Version 1.1", cited in
Section 2.
5)	Product Approval: In Canada, strings for exterior use as portable decorative lighting must
be CSA or UL approved.
6)	Warranty: All participating manufacturers must offer a minimum of a 3-year warranty
against product defects.
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7)
Packaging: The packaging containing the product shall specify:
product's suitability for use indoor and/or outdoor,
number of LED lamps,
LED lamp spacing,
total light string length in appropriate metric and SAE units, and
wattage of light string.
The light string should be labelled with the following information:
certification agency,
rating for indoor or outdoor use, and
maximum number of like strings that can be connected end to end.
8)	Testing Criteria: In order to qualify their products for ENERGY STAR, manufacturers are
required to certify their decorative light strings using test procedures referenced in this
document (see Section 2). The criteria listed in Table 1 must be tested using "Powertech
Labs/BC Hydro Decorative Light String Test Protocol Draft Version 1.1." These test results
shall be conducted by a third-party laboratory approved by Natural Resources Canada.
9)	Effective Date: The date that a manufacturer begins to qualify products as ENERGY STAR
will be defined as the effective date of the agreement.
10)	Future Specification Revisions: ENERGY STAR reserves the right to change the
specification should technological and/or market changes affect its usefulness to
consumers, industry, or the environment. In keeping with current policy, revisions to the
specification will be arrived at through stakeholder discussion and consultation.
References:
ASSIST, 2005. Recommends...LED Life for General Lighting - Definition of Life. Vol. 1, No.1
February 2005. Alliance for Solid-State Illumination Systems and Technologies Program.
Accessed on February 7th, 2006 at:
http://www.lrc.rpi.edu/programs/solidstate/assist/pdf/ASSIST-
LEDLifeforGeneralLighting.pdf
BC Hydro, 2004. Seasonal LED (Light Emitting Diode) Program Winter 2003 Program Prepared
by Alicia Forrester. BC Hydro. March 2004.
EPA & DOE, 2003. The ENERGY STAR® Label: A Summary of Product Labeling Objectives and
Guiding Principles. Andrew Fanara. US EPA. May, 2003. Accessed on February 7, 2006
at: http://energystar.gov/ia/partners/prod_development/downloads/guiding_princip.doc
E-Source, 2001. LEDs in Exterior Applications: An Emerging Market. Esource ER-01 -17
November 2001.
NCI, 2005. Energy Savings Estimates of Light Emitting Diodes in Niche Lighting Applications,
November 2003. Prepared by Navigant Consulting Inc. for the U.S. Department of
Energy.
NEEA & WSU, 2005. Energy Efficiency Fact Sheet. Holiday Lights: LED and Fiber Optics. Energy
Ideas Clearinghouse. Washington State University with support from the Northwest
Energy Efficiency Alliance. October 2005.
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PowerTech Labs, 2005. Seasonal LED String Testing. Powertech Labs Inc.
Sampson Research, 2003. Holiday Lighting Market Assessment Phase III Report Adjusted
Baseline Estimates. Sampson Research. Prepared by Sampson Reserach for Power
Smart Quality and Assurance, BC Hydro. August 15, 2003.
USITC, 2003. USITC Interactive Tariff and Trade DataWeb. Data available online:
http://dataweb.usitc.gov/scripts/user_set.asp
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