Residential Electrical Services – service entrance systems, load calculations, and
installation fundamentals study material
Which of that following locations at dwelling units require GFCI protection? - correct answer
✔✔a. Receptacles within garages
Which type of cable with a corrugated sheath has a maximum bend raduis of 7 times the cable
diameter? - correct answer ✔✔a. Type MC
Which of the following circuits require a minimum of 20A of overcurrent protection? - correct
answer ✔✔c. Residential small appliance branch circuits
According to the NEC, which of the following is required for the small appliance loads in each
kitchen area? - correct answer ✔✔a. Two 120V, 20A small appliance branch circuits
According to NEC Section 220.53, loads for which of the following appliances shall be
permissible to apply a demand factor of 75%? - correct answer ✔✔B. Fixed appliances
The NEC allows the load calculation for the ground neutral conductor supplying electric ranges
and dryers to have a demand factor of ______. - correct answer ✔✔b. 70%
Which of the following is required to carry the lighting load for the residence in the figure
above? - correct answer ✔✔c. Two 15A circuits
How many square feet of livable space are in the home in figure above? - correct answer ✔✔d.
1,200
Which of the following is the minimum NEC lighting load requirement for the home in the figure
above? - correct answer ✔✔c. 3,600VA
installation fundamentals study material
Which of that following locations at dwelling units require GFCI protection? - correct answer
✔✔a. Receptacles within garages
Which type of cable with a corrugated sheath has a maximum bend raduis of 7 times the cable
diameter? - correct answer ✔✔a. Type MC
Which of the following circuits require a minimum of 20A of overcurrent protection? - correct
answer ✔✔c. Residential small appliance branch circuits
According to the NEC, which of the following is required for the small appliance loads in each
kitchen area? - correct answer ✔✔a. Two 120V, 20A small appliance branch circuits
According to NEC Section 220.53, loads for which of the following appliances shall be
permissible to apply a demand factor of 75%? - correct answer ✔✔B. Fixed appliances
The NEC allows the load calculation for the ground neutral conductor supplying electric ranges
and dryers to have a demand factor of ______. - correct answer ✔✔b. 70%
Which of the following is required to carry the lighting load for the residence in the figure
above? - correct answer ✔✔c. Two 15A circuits
How many square feet of livable space are in the home in figure above? - correct answer ✔✔d.
1,200
Which of the following is the minimum NEC lighting load requirement for the home in the figure
above? - correct answer ✔✔c. 3,600VA
