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Pagel Electrical Level 3 Module 1 Load Calculations and Branch Feeder Circuits Quiz. According to the NEC®, the ampacity of branch circuit conductors must be derated when there are more than how many current-carrying conductors ina raceway? - answer 3 Airconditioning overcurrent protective devices can never exceed what percentage of the motor-rated load current or the branch circuit selection current (whichever is greater)? - answer 225% Conductors must be derated when installed in conduit - answer on or above rooftops Continuous loads are calculated at what percentage of the maximum current rating of the overcurrent device? - answer 80% Fora given load and length, the branch circuit voltage drop should not exceed - answer 3% For resistance welders, the rating for the overcurrent protection device should not exceed what percentage of the primary current rating of the welder? - answer 300% Show window lighting is calculated at 200VA per linear foot plus - answer 125% The allowable ampacity for eleven No. 12 THHN copper conductors in acable must be adjusted by - answer 50% The load for 10' of multi-outlet assembly used to supply several loads simultaneously is - answer 1,800VA The maximum size dual-element fuse for a 40hp, 38, 460V motor with a Design Letter D is - answer 100A What is the demand load for one household range with a nameplate rating of 11.75kW, 240V, 19? - answer 8kW What is the current-carrying capacity for No.6 THWN aluminum conductors in conduit run through an ambient temperature of 38°C? - answer 44 Amps What is the lighting load on a 120V circuit for six 100W incandescent lights and four fluorescent fixtures with a ballast rating of 1.5A, all operating continuously for 8 hours per day? 13.75A - answer 13.75A What is the load center distance for a 208V, four-wire, three-phase branch circuit with fixed noncontinuous loads from the source of 60A at 45’, 40A at 60’, 30A at 75’, and 25A at 100' - answer 63.55' Page2 What is the load center length for a branch circuit consisting ofnoncontinuous loads of 125A at 80', 75A at 110’, and 50A at 100"? - answer 93' What is the load center length for a branch circuit with noncontinuous loads of 20A at60' and 50A at 125'? - answer 106.43' What is the load for 55' of show window using the linear foot method? - answer 13,750VA What is the motor full-load current for a motor with a nameplate rating of 50hp, 460V, 30? - answer 65A What is the required circuit ampacity ofa noncontinuous, single-phase load of 8.5kW at 277V? - answer 30.69A What is the required circuit ampacity for a noncontinuous, three-phase load of 6kW at 208V? - answer 16.654 What is the total ampacity for a 120V branch circuit consisting of four duplex receptacles rated noncontinuous duty and six duplex receptacles rated continuous duty? - answer 17.25A What is the total load required by the NEC® for two appliance branch circuits plus a laundry branch circuit? - answer 4,500VA What is the voltage drop for a 120V, single-phase, two-wire branch circuit, 100" long, using copper conductors of 6,530 circular mils with anoncontinuous load of 13A?5.14V - answer 5.14V What size copper conductor would be required for a 240V, 1@ circuit supplying a noncontinuous load of 27.5A at a distance of 145', and a maximum voltage drop of 3%? - answer No. 10 When connected to 15A or 20A multi-outlet general-purpose branch circuits, which of the following shall not exceed 50% ofthe branch circuit ampere rating? - answer Fastened-in- place utilization equipment 
