Residential Electrician Exam #4 questions with correct answers

When a single branch-circuit with an equipment grounding conductor is supplying a detached garage from a house, what, if any, additional grounding electrode(s) is/are required at the garage? a) A ground rod and underground metal water pipe. b) A metal underground water pipe only. c) A metal underground water pipe and building steel, if available. d) No additional electrodes are required. CORRECT ANSWER D: No additional electrodes are required. Ref: 250.32(A), Ex. The point of attachment of a service drop to a residence where the voltage is 120 volts to ground is required to be at LEAST _____ above grade. a) 8 feet b) 10 feet c) 12 feet d) 15 feet CORRECT ANSWER B: 10 feet Ref: 230.26 The branch-circuit overcurrent protection device shall be permitted to serve as the disconnecting means for stationary motors rated NOT greater than _____ horsepower. a) 2 b) 1 c) 1⁄ 2 d) 1⁄ 8 CORRECT ANSWER D: 1⁄ 8