Motor-control circuits may be very low voltage; they may be in the 12- to 24-volt (V) alternating current (AC) or direct current (DC) range or as high as 600V. READ MORE
Published:
September 2012
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September 2012
Lighting continues to be a huge chunk of a building’s annual energy costs—between 20 and 40 percent. READ MORE
September 2012
Once the owner has secured funding for an energy services project, the next step is installation design. READ MORE
September 2012
A contractor asked me to inspect the grounding and bonding of a service that he installed for a customer. READ MORE












