GFCI protection for personnel is required in bathroom receptacles that are ____.
A. 112-volt, single-phase, 15- and 20-ampere
B. 125-volt, single-phase, 15- and 20-ampere
C. 125-volt, dual-phase, 15- and 20-ampere
D. 125-volt, single-phase, 20- and 25-ampere
Answer: B
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Answer the following statement true (T) or false (F)
A GFCI sensor will trip when the _____.
a. current in the neutral load is less than the current in the hot load b. current in the neutral load is greater than the current in the hot load c. device gets wet d. current is less than the value established for a Class A device
The subsequent problems deal with the circuit below where all voltage sources are dc and the circuit is assumed to be in steady state. Also, R1 = R2 = R3 = R4 = R.
If source V3 is replaced by an open circuit, I3 is
A. V2 / R4 B. (V1 ? V2) / R4 C. (V1 ? V2) / (R4 + R5) D. 0 E. (V1 + V2) / R4
A CNG refueling station pump is designated as a P24 filling station. This means _________
A) The pump can refuel at a pressure of up to 2400 PSI B) The CNG is 24% natural gas and 76% propane C) The pump can only deliver 24 gallons at a time D) It will take 24 hours to refuel, using the slow-fill method