Residential Electrical Services – electrical systems, service entrance concepts, and installation
fundamentals study material
An example of a location in a dwelling where a receptacle must have a GFCI protection is a - ANS
✔✔Garage
A type of cable with a corrugated sheath that has a maximum bend radius of 7 times the cable
diameter is - ANS ✔✔Type MC
A residence with 1,000 square feet of living space has a general lighting load of - ANS
✔✔3000va
According to the NEC, the small appliance loads in each kitchen area of a dwelling must be
served by at least - ANS ✔✔Two 120V, 20A small appliance branch circuits
The NEC article that provides the rules for demand factors is - ANS ✔✔Article 220
The NEC allows the load calculation for the grounded neutral conductor supplying electric
ranges and dryers to have a demand factor of - ANS ✔✔70%
Which of the following must never be used as a grounding electrode? - ANS ✔✔underground
gas piping and aluminum
The minimum clearance of service drop conductors over a residential driveway is reduced to 12'
(3.7m) when the voltage is limited to - ANS ✔✔300 volts
The NEC article that lists the requirements for installing a service disconnect is - ANS ✔✔Article
230
fundamentals study material
An example of a location in a dwelling where a receptacle must have a GFCI protection is a - ANS
✔✔Garage
A type of cable with a corrugated sheath that has a maximum bend radius of 7 times the cable
diameter is - ANS ✔✔Type MC
A residence with 1,000 square feet of living space has a general lighting load of - ANS
✔✔3000va
According to the NEC, the small appliance loads in each kitchen area of a dwelling must be
served by at least - ANS ✔✔Two 120V, 20A small appliance branch circuits
The NEC article that provides the rules for demand factors is - ANS ✔✔Article 220
The NEC allows the load calculation for the grounded neutral conductor supplying electric
ranges and dryers to have a demand factor of - ANS ✔✔70%
Which of the following must never be used as a grounding electrode? - ANS ✔✔underground
gas piping and aluminum
The minimum clearance of service drop conductors over a residential driveway is reduced to 12'
(3.7m) when the voltage is limited to - ANS ✔✔300 volts
The NEC article that lists the requirements for installing a service disconnect is - ANS ✔✔Article
230
