ASCO's low and medium voltage generator transfer switches are available in automatic and manual models. They reliably transfer electrical loads between normal and emergency power sources in critical power systems for decade after decade.
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This Tech Brief compares UL 98 testing to the more rigorous UL 1008 testing requirements and explains how the more rugged standard is best-suited for increasing backup power availability and reliability of your generator transfer switch.
Power distribution systems with a backup generator can be served by either a single grounding electrode for the entire system or a second electrode at the generator. The Tech Brief very simply describes when each configuration is necessary.
Low-voltage automatic transfer switches (ATSs) are available in a wide range of ampacities and features. Our white paper entitled ATS Selection Basics surveys common configuration options, and identifies the types of information needed to select an automatic transfer switch.