Quiz

Recreational Vehicles and Recreational Vehicle Parks

1. A 2020 code change now requires which device be installed in a recreational vehicle?
a) reverse polarity indicating device
b) phase failure monitor
c) open neutral relay
d) none of the above

2. Which of these other sources of ac power that may be used in a recreational vehicle must be listed?
a) inverters
b) motor generator
c) engine generator
d) all the above

3. The maximum exposed usable length of a RV cord is ____ feet  if it is connected to the RV at less than 3 feet above the ground and the point of entrance is at the rear of the vehicle.
a) 25
b) 30
c) 40
d) 38

4. Which interior wiring method for RVs is not allowed by the NEC?
a) Type AC armor-clad cable
b) Type NM sheathed cable
c) Type EMT electrical metallic tubing
d) Type FCC flat conductor cable

5. What percentage of new RV sites with electrical supply are required to have 50 amperes, 125/250-volt receptacles?
a) 40
b) 25 
c) 20
d) 50

6. Switches for lighting circuits installed in RVs shall be rated not less than ____ amperes, 120-125-volt and in no case less than the connected load.
a) 8
b) 20
c) 15
d) 10

Answers:
1. (a) Ref: Article 551.40(D)
2. (d) Ref: Article 551.32
3. (b) Ref: Article 551.46(B) 
4. (d) Ref: Article 551.47(A)
5. (a) Ref: Article 551.71(C) 
6. (d) Ref: Article 551.51(A)(1)