Critical Code Requirements for Motor Applications

Critical Code Requirements for Motor Applications

Some common violations set motor installations up for increased danger and decreased reliability.

Given the title of this article, you might expect the citations to all be in Art. 430. But we begin with Art. 110.

Poor workmanship [110.12] is often a factor in motor failures. For example, an electrician troubleshooting a “failed” motor found the cause inside the weatherhead. The wires had been twisted together by hand and then wrapped in tape. That unreliable assembly method is a failure waiting to happen, and, in this case, it occurred.

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