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Electrical Troubleshooting Quiz — Sept. 19, 2017

How to find out why a key motor has failed several times over the past 18 months.

You work for a technical services firm. A client company’s plant engineer needs a chronic motor failure solved but has a sticky situation. The plant is privately owned. Ted, who is officially the “electrical maintenance engineer” is a relative of two of the owners. “I can’t fire this guy, even though he doesn’t know what he’s doing.”

This key motor has failed several times over the past 18 months. Ted replaced the VFD three times, each t

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