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Overcurrent Protection, Part 2

Part I, which appeared in the March/April issue, provided readers with information about basic operation and basic time-current characteristics of branch-circuit, low-voltage fuses and...

Allowable Ampacities – Conductors in Cable Trays

In my experience, a discussion of conductor numbers and ampacities in cable trays is frequently met with a snicker or knowing smile. Could it...

What are you paying for electricity? Part 2, Residential Electric Rates

To protect your and your company’s wallets, it is very important to understand the rates for which you are being charged for electricity. To...

The Texas Margin Tax: There’s a New Tariff in Town

For two and half years in IAEI News, Jesse Abercrombie has been addressing financial issues of concern to those in the electrical industry. For...

Utility Deregulation, What Does it Mean to Inspectors?

Deregulation of electric utilities is sweeping the country and is now available almost everywhere. The theory is that competition in the purchase of electric...

When Disconnects Are Not Enough

May is electrical safety month, during which the electrical industry draws attention to all aspects of electrical safety for persons and property. Section 90.1(A)...

Case Study: A Fragile Environment in a Rugged Climate

Behind the scenes, a lot of mechanical engineering goes into creating and maintaining a tropical rainforest near Lake Erie, just 40 miles from the...

Does UL List the spiralshaped compact fluorescent lamps (e.g. light bulbs)?

Question: Spiralshaped compact fluorescent lamp Does UL List the spiralshaped compact fluorescent lamps (e.g. light bulbs)? Can they be used in any type of light...

Are all split bolt clamps Listed to be used for connecting...

Question: Split bolt clamps Are all split bolt clamps Listed to be used for connecting copper grounding electrode conductors to steel rebar direct buried in...

Signs

There are signs all around us telling us what to do, warning us of danger, and some we are not aware of until it...