Tag : NEC

What are the NEC Requirements for Grounding and Bonding Rebar?

E&S Grounding Solutions Aug 17, 2020 1 265

Many people are concerned that bonding the steel rebar in concrete may lead to cracking of the concrete due to thermal heating. It is a very counterintuitive concept, but it’s actually the exact opposite.

Ask The Experts

The NEC calls for use of Ground Fault Protection (GFP) type for circuit breakers for services over 1000A, does this include buildings or just equipment?

E&S Grounding Solutions Jun 16, 2020 0 190

Ground Fault Protection systems are very sophisticated devices, often with many variable settings to “Dial-In” the specific requirements needed for your site. Also, the reliability of the GFP systems depends on many factors beyond the proper settings on the device.

Grounding

What Is An Acceptable Earth Ground Resistance Value?

E&S Grounding Solutions Dec 10, 2019 0 276

There are standards that recommend a specific resistance-to-ground, depending on the type of system you are working with.

Ask The Experts

Grounding of metal buildings

E&S Grounding Solutions Apr 23, 2019 0 130

Whatever satisfies your inspector is probably all that you are legally required to do.

Ask The Experts

What is the rod distance required by the NEC away from the electrical panel?

E&S Grounding Solutions Jan 23, 2019 0 95

Generally speaking “best practice” would indicate that the closer you install the rod to the panel, the better

Ask The Experts

When is it necessary to put a disconnect switch in a residence with a 100, 200 amps, and where do you ground it to?

E&S Grounding Solutions Mar 3, 2018 0 76

Since the very first National Electric Code (NEC) NFPA 70 was written, over a hundred years ago, there has been a requirement for completely disconnecting the power coming into a building. This is called a “Service Disconnect” by the NEC

Ask The Experts

Are GFCI's required on refrigerators?

E&S Grounding Solutions Aug 17, 2017 0 140

While it is not known exactly how many lives have been saved since the introduction of GFCI protection in the 1971 National Electrical Code, there is no doubt that the number of electrocutions in America has dropped dramatically ever since.