单选题When using a lightning arrestor, connect which type of ground wire to a good earth ground?()A#6 solid copperB#12 solid copperC#20 solid copperD#22 solid copper

单选题
When using a lightning arrestor, connect which type of ground wire to a good earth ground?()
A

#6 solid copper

B

#12 solid copper

C

#20 solid copper

D

#22 solid copper


参考解析

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