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Monthly Archives: September 2005

Making the Utility Connection

More than 90 percent of the new PV systems being installed throughout the United States are connected to the local utility with utility-interactive inverters...

Concrete-Encased Electrodes Required

Electrical arc-flash and shock hazards have been recognized as particularly dangerous and fairly frequent occurrences that put the lives and health of electrical workers...

Guidelines to Evaluating Unlisted Products

The American Council for Electrical Safety (ACES) is a collaboration that was formed by a variety of regulators responsible for ensuring the safety of...

How Does EMC Matter to Global OEM Drives User-Specifiers?

Electromagnetic compatibility (EMC) is the ability of electrical/electronic equipment to operate in its installation environment while neither causing nor experiencing electromagnetic interference (EMI). EMI...

Inspecting Elevator Power Wiring

Every year they are involved in accidents that kill thirty people and seriously injure seventeen thousand.1 Before you let that statistic scare you into...

Basic Electricity, Part 8

Inductive reactance Electrical resistance is not the only property of materials that resists the flow of current. Let us consider an experiment. Let’s purchase a...

Hydrogen Super Highway

Imagine traveling from New York to Los Angeles by car in 10.5 hours, while the rail system you are running on is producing enough...

Approved Electrical Equipment Facts and Confusion

How often in Canada perplexed distributors or wholesalers of electrical equipment provided with various trademarks or other symbols of identification hear from a visiting...

Single-Conductor Issues

In this article, let us review issues concerning induced current flow in the metallic coverings of single-conductor cables. Single-conductor cables have some advantages over...

The NEMA Field Representatives Program: Helping Inspectors Meet Their Goals

The National Electrical Manufacturers Association Field Representatives Program promotes the use and adoption of the National Electrical Code and monitors regional developments of importance...
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