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UL requires that the instructions furnished with GFCIs be marked and that testing be performed upon installation and at least how many times each month as well as after severe lightning storms? 1) Once
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UL requires that the instructions furnished with GFCIs be marked and that testing be performed upon installation and at least how many times each month as well as after severe lightning storms?

1) Once
2) Twice
3) Three times
4) Four times

User Trep
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1 Answer

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Final answer:

According to UL, the instructions furnished with GFCIs must be marked. Testing should be performed upon installation and at least once a month as well as after severe lightning storms.

Step-by-step explanation:

According to UL (Underwriters Laboratories), the instructions furnished with GFCIs (Ground Fault Circuit Interrupters) must be marked. Testing should be performed upon installation and at least once a month as well as after severe lightning storms.

User Andrew Winter
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