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Electrical
Systems
Manufacturer Requirements
FEDERAL LAW
183.455 - Overcurrent Protection:
General
(a) Each ungrounded current-carrying
conductor must be protected by a manually reset, tripfree
circuit breaker or fuse. |
Each ungrounded conductor used to carry current
must be protected by a fuse or a circuit breaker. If used,
a circuit breaker must be of the manually reset type rather
than the automatic reset type. Additionally, the circuit breaker
must be of the tripfree type, which means that the breaker
will open the circuit even if the handle is held in the “on”
position.
TO COMPLY WITH THE LAW
Is each ungrounded current-carrying-conductor
protected by:
- a manually reset, tripfree circuit
breaker, or a fuse?
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FIGURE
23 - Overcurrent Protection
FIGURE
23 - Overcurrent Protection (continued)
FIGURE
24 - Overcurrent Protection Exceptions
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