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Electrical Troubleshooting Quiz

2013-05-28 19:27:00| Electrical Construction & Maintenance

A 2,000A breaker tripped, bringing down several production lines. Another electrician responded to the trouble call. His DMM didn't find a fault between any of the phases or between any phase to ground. He looked at each of the large loads and didn't find anything obvious: nothing melted, no burning smell, no sign that anything happened. No branch circuit protection devices opened, either. read more

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