Eaton Switchboard PRL4X

Switching mechanism and fuse connections visually inspected

Fusible devices inspected for signs of discoloration, cracking, scorching, overheating, or broken parts

Any worn parts or the entire switch replaced

Inspect bus bar and cables for visible damage

Visually inspect connections for overheating and damage

All bus bar and cable connections checked and torqued in accordance with labeling on the switchboard

Inspect for broken wire strands and pinched or damaged insulation on cable connections

Visual inspection of circuit breakers for signs of discoloration, cracking, scorching, overheating, or broken parts

Exercise the breaker operating mechanism, making sure it is opening and closing

Breaker showing signs of any one of these issues

If any of the above checks fail, the breaker should be replaced

Check all wiring connections for tightness, including those at the current and potential transformers, if present, and at all terminal blocks

Check all secondary wiring connections to ensure that they are properly connected to the switchboard ground bus, where indicated

Look for broken wire strands and pinched or damaged insulation

Sign off on the secondary wiring check

Switch mechanism is turned to the OFF position

Visual inspection of the switch contacts, blades, and mechanism

Fuses are of the proper class, ampere, voltage, and interrupting rating

Non–current-limiting fuses are not used as replacements for current-limiting fuses

Rejection mechanisms are not defeated

Sign off on the fuse replacement