Frequently Asked Questions

Frequently asked questions regarding NSS products, such as; what they are, what certifications they have achieved, common product specific questions, and more.

GFCI SECTION

WHAT IS A GFCI?

WHY DO YOU NEED A GFCI?

WHERE IS A GFCI NEEDED?

ELCI SECTION

WHAT IS AN ELCI?

WHY DO YOU NEED AN ELCI?

WHERE IS AN ELCI NEEDED?

SHOULD YOU GET AN ELCI?

GFCI/ELCI SECTION

WHAT IS THE DIFFERENCE BETWEEN A GFCI & AN ELCI?

DO I NEED A GFCI OR AN ELCI?

NEC SECTION

WHAT IS THE NEC?

ARE NEC GUIDELINES UNIVERSAL?

WHAT DO NEC GUIDELINES COVER?

WHY DO I NEED TO KNOW THE NEC GUIDELINES?

UL SECTION

WHO OR WHAT IS UL?

WHAT DOES A UL LISTING MEAN FOR YOU?

WHAT ARE THE UL CERTIFICATIONS?

WHY BUY UL CERTIFIED PRODUCTS?

CSA SECTION

WHAT IS THE CSA?

WHO NEEDS CSA APPROVAL?

WHAT ARE THE DIFFERENT CSA MARKS?

WHY BUY CSA CERTIFIED PRODUCTS?

CLASS A PROTECTION SECTION

WHAT IS CLASS A PROTECTION?

WHY DO YOU NEED CLASS A PROTECTION?

WHY DOES UL NOW REQUIRE CLASS A PROTECTION?

GENERAL FAQ SECTION

WHAT IS A PLUG-IN APPLIANCE?

WHAT IS A HARDWIRED APPLIANCE?

SHOULD I HAVE PLUG-IN OR HARDWIRED APPLIANCES?

WHAT IS AN AUTO RESET GFCI?

WHAT IS A MANUAL RESET?

SHOULD I HAVE AN AUTO OR MANUAL RESET?

DO I NEED TO SPECIFY EQUIPMENT OR A PANEL?

TRIPPING SECTION

WHAT IS NUISANCE TRIPPING?

WHAT ARE COMMON CAUSES OF NUISANCE TRIPPING?

VFD SECTION

WHAT IS A VFD?

CAN VFDS DISRUPT GFCIS?

WHY DO GFCIS AND VFDS HAVE A RESISTIVE FIT?