Electrical Industry Articles and Stories

Residential energy use today accounts for about 20% of U.S. greenhouse gas emissions – though this figure varies widely by region and income level. Certainly, getting more of our energy from renewable resources can help reduce those emissions, but we also need to limit overall energy demand in order to meet the emissions cuts necessary to blunt climate change’s worst effects.

I was talking to my brother, Mark, on the phone last night. We’d been trying to connect all week and finally got the chance. I’m in Arkansas and he’s in Arizona, so the time difference can be a pain.

We just missed each other the day before because he was over with the neighbors across the street.

In new construction, sustainable building practices are becoming the norm. But even in existing buildings, simple strategies can be implemented quickly and easily to address inefficiencies, reduce energy use, improve comfort, and enhance productivity in the space.

Some facilities are changing their requirements for motor and appliance installations. This could be due to OSHA Lock-out and Tag-out requirements or NFPA 70E. The change is toward using pin and sleeve devices instead of having a hard-wired installation.

Safety requirements often have the maintenance person checking for the absence of voltage before touching. The rules are quite specific and are enforced by OSHA.

Switchboards are critical to the dependability of any electrical power installation because they represent that pivotal point at which incoming power supply is divided into separate circuits, controlled and protected by fuses and switchgear, metered, and then divided into a number of functional units for its given applications. In general, switchboards distribute power to transformers, panelboards, control equipment, and to system loads.

Bonding and grounding are simple concepts, but, unfortunately, they’re also easily confused with each other. Definitions of one term often get wrapped up in the definitions of the other, and, before long, one can begin thinking the words are interchangeable.

“Grounding” refers to the creation of a path from electrical equipment to the earth. It is intended to protect equipment and help prevent fires that might occur due to high voltages resulting from lightning strikes, line surges or unintended contact with higher-voltage lines.