Ground fault receptacles contain ____.

a. a relay coil
b. a spherical transformer
c. a manual sensing circuit
d. different circuitry than the circuit breaker


CCCC

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When servicing an integral wheel bearing hub, the hub nut should be tightened with an impact wrench.

Answer the following statement true (T) or false (F)

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What is the number of conductors and the wire size specified for the feeder circuit supplying rooftop unit No. 1 in the power-riser diagram in Figure 3?



a. Three No. 10 AWG
b. Four No. 2 AWG
c. Three No. 6 AWG
d. Four No. 4/0 AWG

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The NECĀ® article that covers the installation of pools and spas is _____.

a. NEC Article 250 b. NEC Article 340 c. NEC Article 680 d. NEC Article 725

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Which type of renewable energy resource can cause thermal pollution?

a. impoundment hydropower c. in-stream hydropower b. pumped storage d. diversion hydropower

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