ELECTRICAL-LEVEL 3 CHAPTER 1 QUESTIONS AND ANSWERS WITH SOLUTIONS 2024/25

What is the total load, in VA, for two small appliance branch circuits in a single-family dwelling? - ANSWER 3,000VA What is the maximum number of general-purpose noncontinuous duty duplex receptacles that can be connected to a 20A, 120V circuit in a commercial building? What is the NEC® required load rating for each receptacle? - ANSWER 13 receptacles; 180VA What is the demand load, in amps, for a single circuit supplying one wall-mounted oven rated 11.75kW, 1Ø, 240V, and a countertop cooking unit rated 9.6kW, 1Ø, 240V? - ANSWER 48.33A What is the demand load, in amps, for one household electric range with a nameplate rating of 16.75kW, 1Ø, 240V? - ANSWER 41.67A What is the minimum conductor ampacity for four 1,000W, 208V, 1Ø electric baseboard heaters? - ANSWER 24.04A Load calculations for circuits supplying lighting units with ballasts are based upon _____. - ANSWER the ampere ratings of the ballasts What is the calculated load, in amps, for a 120V circuit supplying four 150W recessed incandescent fixtures and six recessed fluorescent fixtures operating continuously? (Each fluorescent ballast is rated at 0.65A.) - ANSWER 11.125A The load for 6 of multi-outlet assembly used simultaneously is _____. - ANSWER 1,080VA The voltage drop for a 480V, 3Ø circuit with a load of 26.5A, using No. 8 stranded copper conductors at a circuit length of 145 - ANSWER 5.18V