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UL Question Corner: Leakage current

Q. I know cord and plug-connected appliances are tested for leakage current but are hard-wired appliances...

Certification requirements for line side connectors

Q. Do wire connectors used to make line side splices or taps need to have a...

UL Question Corner: Certification requirements for line side connectors

Do wire connectors used to make line side splices or taps need to have a short circuit current rating (SCCR)? If I use a...

UL Question Corner: Installing power monitoring equipment in panelboards

NEC-2017 Section 312.8(B) was added to allow installation of Listed power monitoring equipment inside panelboards. Where can I find power monitoring equipment that is...

UL Question Corner: System combination AFCI’s

 Are there any Certified (Listed) system-combination arc-fault circuit interrupters (AFCIs) for use in accordance with NEC 210.12(A)(4)? How are they identified? Yes. UL does Certify...
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