When installing new systems where selective coordination is mandatory, the Electrical Worker must install the proper type circuit breakers with the specified settings or the proper type/ampere rating fuses.

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Multiple Choice

When installing new systems where selective coordination is mandatory, the Electrical Worker must install the proper type circuit breakers with the specified settings or the proper type/ampere rating fuses.

Selective coordination requires that protective devices are chosen and configured so that a fault in a downstream circuit trips only the nearest device. When this is mandatory for a new installation, you must select the proper type of protective device and the correct settings or ratings to achieve that behavior. If you use circuit breakers, their type and time-current characteristics must be appropriate, and the trip settings (amps and curves) must be set according to the coordination study. If fuses are used, you must choose the correct fuse type and ampere rating that will coordinate with upstream devices. Using the right combination ensures the downstream device clears faults while upstream devices stay online, preventing unnecessary outages and maintaining system reliability.

When installing new systems where selective coordination is mandatory, the Electrical Worker must install the proper type circuit breakers with the specified settings or the proper type/ampere rating fuses.

Study with Code Standards and Practices Level 6 Test. Dive into multiple topics with detailed explanations. Prepare effectively for your exam!

When installing new systems where selective coordination is mandatory, the Electrical Worker must install the proper type circuit breakers with the specified settings or the proper type/ampere rating fuses.

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