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How this applies to an existing Portfolio Lighting installation

This UL vs ETL Landscape Lighting: Which Certification Is Acceptable? resource can help when inspecting, repairing or extending Portfolio outdoor lighting. First identify the transformer, its supply connection, the existing cable and the fixture locations; requirements depend on the equipment listing, installation conditions and locally adopted rules.

Portfolio owner’s first step: For Portfolio equipment, compare the actual nameplate and installation instructions with the safety topic below before altering the system.

Identify your Portfolio modelPortfolio installation instructionsPortfolio transformer troubleshootingLandscape lighting electrical safety

Quick Answer: Is ETL Acceptable Instead of UL?

Yes—an ETL Listed product can be a legitimate third-party safety-certified product in the United States. Intertek Testing Services NA, Inc. is recognized by OSHA as a Nationally Recognized Testing Laboratory (NRTL), and Intertek states that its ETL Listed Mark shows that a product has been independently tested and certified to applicable North American safety standards.

UL Solutions is also an NRTL and issues its own certification marks. The testing organization is different, but “ETL Listed” should not automatically be interpreted as “not really listed” or “less safe because it is not UL.”

The better question is not “Does it say UL?” Ask: “Does this exact product bear a valid certification mark from an OSHA-recognized NRTL for the correct product category and standard, and is it being installed within the conditions of that certification?”

This guide was published by PortfolioLighting.net, a lighting specialist with 25+ years of experience troubleshooting low-voltage systems.

What to Check on the Product

Apply this requirement to an existing Portfolio installation

On UL vs ETL Landscape Lighting: Which Certification Is Acceptable?, diagnose the installation by failure scope before replacing hardware. One dark fixture points first to that fixture, its lamp/module, local splice, stake, or short lead; several fixtures on one run shift attention upstream to the branch connection and cable; a whole-yard outage shifts the investigation to the transformer, controls, and source power. Preserve fixture model numbers and connector locations as you work so a repair does not erase the evidence needed for later parts matching. Continue with Portfolio Parts when the failure has been narrowed.

Portfolio model lookup Portfolio transformer troubleshooting Portfolio installation instructions

Do Not Trust Marketplace Wording Alone

A product title that says “UL approved,” “ETL compliant,” or “built to UL standards” is not the same thing as seeing and verifying an actual certification mark on the product.

Certification is tied to a specific product and certification record—not a seller’s description.

UL vs ETL Landscape Lighting: Side-by-Side Comparison

↔ Swipe horizontally to see the full comparison.

QuestionULETLWhat It Means for You Who issues the mark?UL SolutionsIntertekDifferent certification organizations OSHA NRTL system?YesYesBoth operate within OSHA’s recognized product-safety testing framework when within scope Does the mark mean the product was evaluated?UL states representative samples bearing its mark are evaluated to applicable requirementsIntertek states ETL Listed products are tested and certified to applicable safety standardsThe mark should correspond to an actual certification record Follow-up production oversight?UL certification programs include ongoing surveillance/follow-upIntertek describes periodic follow-up inspectionsCertification is more than a one-time marketing test Automatically safe for every outdoor use?NoNoYou still must match the product to its marked use, environment and instructions Does the logo replace code requirements?NoNoCertification is one part of a compliant installation

What an NRTL Is — in Plain English

NRTL stands for Nationally Recognized Testing Laboratory. OSHA describes an NRTL as a private-sector organization it has recognized as meeting legal requirements to test and certify products using consensus-based test standards.

OSHA’s requirements include the ability to test products to appropriate standards, controls for identifying certified products, follow-up inspections of production, independence from manufacturers and users, and procedures for handling findings and disputes.

UL Solutions

One NRTL Certification Organization

UL is widely recognized by consumers, contractors and inspectors, but “listed” in electrical codes is a broader concept than the brand name UL alone.

Intertek / ETL

Another NRTL Certification Organization

Intertek Testing Services NA is on OSHA’s current NRTL list. Its ETL mark is the certification mark homeowners are likely to encounter on many outdoor lighting and electrical products.

Important: OSHA explicitly says its recognition of an NRTL is not a judgment ranking one recognized laboratory’s experience, personnel, equipment or testing methods against another NRTL.

Which Safety Standards Matter for Landscape Lighting?

Landscape lighting is not one single product category. A 12-volt path-light system, a standalone low-voltage luminaire and a 120-volt outdoor wall light can fall under different standards.

UL 1838Low Voltage Landscape Lighting Systems

UL 2108Low Voltage Lighting Systems

UL 1598Luminaires, including many line-voltage luminaires

UL Solutions specifically identifies UL 1838 and UL 2108 for low-voltage lighting, and UL 1598 for line-voltage luminaires. The right standard depends on the actual equipment design and intended installation.

Simple example: A 12-volt landscape-lighting power unit and a 120-volt outdoor wall lantern should not be evaluated as if they were the same type of electrical product just because both produce light outdoors.

For broader installation requirements, use the Landscape Lighting Electrical Code & Safety Guide, the outdoor lighting GFCI requirements guide, and the transformer mounting requirements guide.

UL Listed vs UL Recognized vs UL Classified

This is one of the easiest places to make a bad buying decision because all three labels can look “official,” but they do not mean exactly the same thing.

UL Listed

UL describes the Listed mark as applying to complete end products evaluated to applicable safety requirements. For a homeowner buying a complete transformer or luminaire, this is the kind of certification concept most people expect.

UL Recognized Component

A Recognized Component is generally intended to be built into a larger certified product. A component mark on an internal driver, relay or circuit board does not automatically mean the complete landscape-lighting product is UL Listed.

UL Classified

Classification generally means UL evaluated the product for specific properties, a limited range of hazards or use under specified conditions. Read the scope rather than assuming it is equivalent to an unrestricted end-product listing.

Common marketplace trap: A seller may advertise a transformer as “UL certified” because one internal component is UL Recognized. That does not automatically establish that the complete transformer is UL Listed for field installation.

What UL or ETL Listing Does NOT Automatically Tell You

A valid safety certification mark is important, but it does not answer every question about whether a fixture is right for your yard.

The intended use becomes especially important around ponds and water features. A fixture can be legitimately UL or ETL listed for ordinary outdoor use without being suitable for continuous submersion. Our Pond Lighting Code Requirements Guide explains why wet-location landscape lights, splash-zone fixtures, and true underwater luminaires should not be treated as interchangeable products.

Inspect the Portfolio power source and outdoor cable route

On UL vs ETL Landscape Lighting: Which Certification Is Acceptable?, diagnose the installation by failure scope before replacing hardware. One dark fixture points first to that fixture, its lamp/module, local splice, stake, or short lead; several fixtures on one run shift attention upstream to the branch connection and cable; a whole-yard outage shifts the investigation to the transformer, controls, and source power. Preserve fixture model numbers and connector locations as you work so a repair does not erase the evidence needed for later parts matching. Continue with Portfolio Parts when the failure has been narrowed.

landscape lighting electrical safety Portfolio landscape lighting Portfolio troubleshooting

What to Verify by Landscape Lighting Product Type

↔ Swipe horizontally to see the full product checklist.

ProductCertification QuestionOutdoor QuestionCompatibility QuestionCommon Mistake Low-voltage transformer / power unitIs the complete unit listed/certified for its intended low-voltage lighting use?Is it intended for the mounting/environment shown?Do output voltage/current/wattage match the system?Buying by wattage alone Path light / spotlightIs the complete luminaire certified for its intended use?Wet/damp/location suitability?Voltage and power-unit compatibility?Assuming “12V” means universally interchangeable Direct-burial cableDoes the cable carry the required markings for its intended wiring use?Is burial/environmental use covered?Correct conductor size for load/run length?Using indoor cord outdoors Connector / spliceIs it identified for the intended low-voltage connection?Suitable for wet/underground exposure?Correct wire gauge and conductor type?Using a dry-location connector in mulch or soil LED replacement lampAppropriate certification/marking for the lamp?Suitable for enclosed/outdoor fixture conditions?Base, voltage, polarity and transformer compatibility?Choosing by socket shape only

How to Verify a UL or ETL Mark Before You Buy

The safest approach is to verify the actual product rather than trusting an online title.

  1. Look for the mark on the product or official product label. A logo shown only in a marketplace image is weak evidence.
  2. Read the wording around the mark. Listed, Classified and Recognized do not mean the same thing.
  3. Look for a control, file or listing identifier. Certification marks commonly include information that helps trace the certification.
  4. Search the certification organization’s product directory. Match manufacturer, model and product category.
  5. Check the geographic scope. U.S., Canada and combined marks can differ.
  6. Read the installation instructions. Certification applies within the product’s intended conditions of use.
  7. When something does not match, stop before installation. Contact the manufacturer, certification body or local electrical inspector.

For discontinued Portfolio equipment: If the label is faded, photograph every surviving number before removing the transformer or fixture. Model number, voltage, wattage, certification mark and control/file information can all help identify what the original equipment was evaluated to do.

Certification Red Flags on Cheap Landscape Lighting

Red Flag 1

“UL Approved” With No Actual Mark

UL Solutions states that “UL Approved” is not a formal UL certification designation.

Red Flag 2

“Built to UL Standards”

A manufacturer can claim design intent without the complete product actually carrying an NRTL certification mark.

Red Flag 3

Only an Internal Component Is Certified

A Recognized driver or power supply does not automatically certify the entire luminaire or transformer enclosure.

Red Flag 4

No Traceable Model or Listing Information

If the exact model cannot be matched to the certification directory, ask questions before assuming the logo is enough.

Red Flag 5

Indoor Certification Used to Sell Outdoor Equipment

Electrical safety certification does not erase environmental-use limitations. Outdoor, wet-location and burial conditions still matter.

Red Flag 6

CE Mark Presented as a U.S. NRTL Listing

A CE marking is not the same thing as a UL or ETL NRTL certification mark for U.S. product-safety listing purposes.

UL vs ETL on Landscape Lighting Transformers

The transformer is one of the most important places to verify certification because it connects to household line voltage and supplies the low-voltage lighting system.

Do not stop at “this is a 200-watt transformer.” Check the input rating, output rating, maximum load, intended lighting-system use, environmental/mounting instructions, certification mark and any limitations printed on the label.

For installation context, see the outdoor transformer mounting requirements, transformer sizing guide, and transformer wattage guide.

UL vs ETL on Landscape Fixtures

A listed fixture still needs to be used where its marking and instructions allow. A path light designed for ordinary landscape exposure is not automatically suitable for underwater use, pool zones or every in-grade installation.

Pay close attention to mounting orientation, supply voltage, cable/connector requirements, wet-location markings, replacement-lamp limitations and whether the fixture is intended to be used only with a compatible listed power unit.

For environmental exposure, compare the landscape lighting IP-rating guide and outdoor lighting gasket and seal guide.

A properly listed outdoor luminaire can still be installed in a poor location. Product certification addresses safety, but parking-lot design also has to account for accessible spaces, pedestrian routes, signs, glare, and pole placement. Our Parking Lot Lighting ADA Guide explains how those accessibility and site-design requirements fit alongside certified lighting equipment.

What If an Inspector Questions an ETL Mark?

Start with documentation rather than arguing about logos. Intertek is an OSHA-recognized NRTL, and ETL is its certification mark. Provide the exact product model, listing record, applicable standard and installation instructions.

The local Authority Having Jurisdiction (AHJ) ultimately evaluates the installation under the codes adopted in that jurisdiction. A valid product certification is important evidence, but the AHJ also considers whether the equipment is being used correctly and whether local requirements have been met.

Best practice: If you are planning a permitted installation, unusual transformer location, pool/spa installation or other high-scrutiny project, resolve certification questions before purchasing a large quantity of equipment.

Repair Portfolio fixtures without assuming every part is interchangeable

On UL vs ETL Landscape Lighting: Which Certification Is Acceptable?, diagnose the installation by failure scope before replacing hardware. One dark fixture points first to that fixture, its lamp/module, local splice, stake, or short lead; several fixtures on one run shift attention upstream to the branch connection and cable; a whole-yard outage shifts the investigation to the transformer, controls, and source power. Preserve fixture model numbers and connector locations as you work so a repair does not erase the evidence needed for later parts matching. Continue with Portfolio Parts when the failure has been narrowed.

Portfolio replacement parts Portfolio outdoor lighting Portfolio model lookup

A 60-Second Certification Check Before Buying Landscape Lighting

1. CertificationActual UL, ETL or other valid NRTL mark?

2. Exact ModelCan you match the model to a certification record?

3. Product TypeTransformer, luminaire, cable and connectors correctly identified?

4. Outdoor UseCorrect damp/wet/burial/environmental suitability?

5. Electrical MatchCorrect voltage, wattage, current and conductor requirements?

6. InstallationWill you use it exactly as marked and instructed?

If all six answers are clear, you have much better information than someone who chose a product solely because the listing photo showed a familiar logo.

UL and ETL certification answer a product-safety question, but they do not tell you whether a fixture has good beam control, low glare, appropriate light distribution, or suitable output for a particular site. Those performance questions are handled through lighting standards and photometric practices. Our Outdoor Lighting ANSI Standards Guide explains the ANSI/IES standards used for landscape design, pedestrian lighting, BUG ratings, and LED photometric testing.

Official Sources Used for This Guide

This page relies on current first-party safety-certification information rather than reseller explanations:

Related Landscape Lighting Code & Safety Guides

UL vs ETL Landscape Lighting FAQ

Is ETL Listed acceptable for landscape lighting?

ETL is Intertek’s product-certification mark. Intertek Testing Services NA is an OSHA-recognized NRTL. The exact product still needs to be certified for the applicable category, standard and installation conditions.

Is ETL less safe than UL?

You should not rank a product as less safe merely because it carries ETL rather than UL. OSHA’s NRTL framework recognizes qualified independent testing organizations, and OSHA says its recognition is not a relative ranking of one NRTL against another.

What is UL 1838?

UL 1838 is the Standard for Low Voltage Landscape Lighting Systems. It is one of the key standards associated with low-voltage landscape lighting.

What is UL 2108?

UL 2108 is the Standard for Low Voltage Lighting Systems. Depending on the equipment, low-voltage lighting products may be evaluated under UL 1838 or UL 2108.

What is UL 1598?

UL 1598 is the Standard for Luminaires and is used for many line-voltage luminaire products.

Is “UL Approved” a real certification label?

UL Solutions says “UL Approved” is not a formal designation. Look for actual UL certification marks such as Listed, Classified, Certified or Recognized Component, and understand what each mark covers.

Does a UL Recognized LED driver make the entire fixture UL Listed?

No. A Recognized Component is evaluated as a component intended for use within a larger end product under specified conditions. The complete fixture needs its own appropriate certification if a listed end product is required.

How do I know whether an online listing is really UL or ETL certified?

Look for the actual certification mark and model information, then verify the product through the certification body’s product directory. Do not rely only on marketplace wording.

Bottom Line

UL and ETL are different marks from different certification organizations, but both can represent legitimate third-party product safety certification. For a landscape-lighting buyer, the strongest decision is not choosing the most familiar logo. It is verifying that the exact transformer, fixture, cable or other electrical product is properly certified for its intended use, installed within its marked limitations and matched to the outdoor environment where it will operate.

Safety Information Verification

Certification status and NRTL information on this page is based on current OSHA, UL Solutions and Intertek information. Local electrical codes, adopted NEC editions and AHJ requirements can vary by jurisdiction.

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PortfolioLighting.net specializes in low-voltage lighting systems, transformer troubleshooting, outdoor electrical safety, product compatibility and practical installation guidance for homeowners maintaining older Portfolio lighting systems.