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Power systems used in commercial or industrial buildings are critical to the needs of those who work in and benefit from these establishments. To ensure the proper function of a power system in both normal and unusual circumstances, building owners may request a power system study, also referred to as a power system analysis.
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It depends on the equipment and the workplace environment. The harsher the environment, the higher potential for damage, so the more frequently items should be tested. Some businesses have a variety of environments, so testing frequency will vary, from three months to five years.