Tripp-Lite AG-SM7145 Serie Manual Del Propietário página 13

Basic Operation
Input Breaker(s) (all models): Protect your electrical circuit from
overcurrent draw from the UPS load. If these breakers trip, remove
some of the load, then reset them by pressing the breaker(s) in.
Ground Screw: Use this to connect any equipment that requires a
chassis ground.
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