Exam Legacy and Other
Questions and Complete
Solutions Graded A+
What type and size of vent is required for a water heater? - Answer: 4 inch, Double wall Type B
Type of cable that does not require a raceway or conduit to be directly buried under a building? -
Answer: Type MC
What size shall the trap be for a kitchen sink with a food waste disposer? - Answer: 1.5"
Which of the following can NOT be used to ground to? - Answer: Rebar
What type of pipe requires the most horizontal support? - Answer: PVC
How many legs are there on three phase incoming service? - Answer: 4 legs (Phase A) (Phase B)
(Neutral) (Phase C)
When can the ground and neutral be bonded in a Sub Panel? - Answer: NEVER
When inspecting a floor drain what should you see? - Answer: Not less than a 2" waste outlet and a
removable strainer.
When a 1/2 inch iron pipe is used for gas, how many threads must be cut? - Answer: 10