How often must emergency power testing be performed?

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Multiple Choice

How often must emergency power testing be performed?

Explanation:
Regular testing of emergency power ensures the system will start and carry the required load whenever normal power fails. The standard approach is to perform a functional test monthly: start the emergency generator, run it for a short period, and verify that the automatic transfer switch correctly shifts power to the emergency source and that all essential equipment would receive power. This cadence catches developing issues between tests without placing an excessive burden on maintenance. Daily would be unnecessary, weekly is more frequent than needed for most systems, and yearly would leave too long a gap to catch problems.

Regular testing of emergency power ensures the system will start and carry the required load whenever normal power fails. The standard approach is to perform a functional test monthly: start the emergency generator, run it for a short period, and verify that the automatic transfer switch correctly shifts power to the emergency source and that all essential equipment would receive power. This cadence catches developing issues between tests without placing an excessive burden on maintenance. Daily would be unnecessary, weekly is more frequent than needed for most systems, and yearly would leave too long a gap to catch problems.

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