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Wednesday, May 24, 2017

Monthly Archives: January 2010

Supply-side PV Utility Connections

Many larger PV systems cannot meet the requirements for a load-side (of the service disconnect) connection to the premises wiring system and a supply-side...

Safety in Our States

We should all be champions of electrical safety and strive to ensure that our customers, our friends and our families do not experience the...

The Illusion of GFCI Protection

During the required annual pool inspections for commercial indoor pools, the inspector happened upon a ground-fault circuit-interrupter (GFCI) device, with a water cooler connected...

Hazardous Area Classification: Division or Zone — You Do Have a Choice

OK all you sports fans out there, it’s football season; and everyone is fired up and running out to buy the latest item of...

Do you inspect and approve electric signs? Things you may want to know about...

In most jurisdictions in this country, there has been implemented some version of a building code. Beyond the quality and safety issue, the electric sign...

A New Generation

A former student called me to ask how to size a new generator for a facility. He said the calculated load would be 1200...

Electrical Installations After the Fire

Australia is a country that has a variety of terrains from the tropical regions of the north to the mountains in the south. In...

Was the Fire Protection Research Foundation’s (FPRF) Residential Electrical System Aging Research Project completed?

Question I understand UL conducted research on old homes to determine the effects of aging on residential electrical wiring systems. Is that research project complete,...

Do Stacked AFCIs Cause Panelboards to Overheat?

Question I have noticed that arc-fault circuit-interrupter (AFCI) circuit breakers tend to be warmer to the touch than regular circuit breakers. Now that the 2008...

When the lightning strikes…are we going to be prepared for it?

Traditionally, when we plan to do anything, we should ask ourselves three questions: What?Why?How? Let’s apply this approach to the subject at hand. Seriously, as electrical...
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