If a switching device has the marking CU ONLY on it, an electrician can use only __________ wire with the device.

Name: If a switching device has the marking CU ONLY on it, an electrician can use only __________ wire with the device.
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Question

Quizplus · Accepted Answer

"CU" is the chemical symbol for copper, indicating that the switching device is designed to be used with copper wire only. Copper clad aluminum wire or pure aluminum wire should not be used with this device.

If a Switching Device Has the Marking CU ONLY on It