Tag: UL Solutions Question Corner

Photo 1. Solar installations dominate the landscape

Can PV Inverters Be Used with Battery Energy Storage Systems?

We are using the 2017 National Electrical Code© (NEC©) in my ...

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Plant Oil Extraction Equipment. Courtesy of Delta Separations

Plant Oil Extraction Equipment

Is there a UL Standard for plant oil extraction equipment, and ...

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UL Question Corner

Reconditioning and UL Certification

The 2020 National Electrical Code© (NEC©) contains many changes regarding the ...

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Are LED tube lamps with integral battery back-up considered emergency lighting?

Are LED tube lamps with integral battery back-up considered emergency lighting?

I have seen Listed LED tube lamps that incorporate a battery ...

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Cord-and-Plug-connected Health Care Facility Outlet Assemblies. Courtesy of Hubbell Incorporated

Cord-and-Plug-connected Health Care Facility Outlet Assemblies

To address the need for cord-and-plug-connected multiple receptacle devices to provide ...

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UL Question Corner Type EF

UL Question Corner — PV rapid shutdown inside the array, and is Type EF conduit Listed?

Are there any Certified (Listed) products available to meet new PV ...

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UL Question Corner, July/August 2019

UL Question Corner — Introducing the UL Product IQ Database

UL Product iQ database is the next generation of UL’s Online ...

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UL Question Corner

UL Question Corner: Low Voltage LED Luminaire Drivers

Do I have to use a power supply/driver that is specifically ...

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UL Question Corner

UL Question Corner: Field modifications of UL Certified (Listed) products, tapping busbars in switchboards, and who is authorized to apply UL Field Evaluation labels

It is the responsibility of the authority having jurisdiction (AHJ) to ...

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UL Question Corner

UL Question Corner: Leakage current

Q. I know cord and plug-connected appliances are tested for leakage ...

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