CALCULATIONS AND BRANCH FEEDER
CIRCUITS EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+
What is the load center length for a branch circuit with
noncontinuous loads of 20A at 60' and 50A at 125'? -
ANSWERS-106.43'
What is the load for 55' of show window using the linear
foot method? - ANSWERS-13,750VA
What is the motor full-load current for a motor with a
nameplate rating of 50hp, 460V, 3Ø? - ANSWERS-65A
What is the required circuit ampacity of a noncontinuous,
single-phase load of 8.5kW at 277V? - ANSWERS-30.69A
, What is the required circuit ampacity for a noncontinuous,
three-phase load of 6kW at 208V? - ANSWERS-16.65A
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? -
ANSWERS-17.25A
What is the total load required by the NEC® for two
appliance branch circuits plus a laundry branch circuit? -
ANSWERS-4,500VA
According to the NEC®, the ampacity of branch circuit
conductors must be derated when there are more than how
many current-carrying conductors in a raceway? - ANSWERS-
3
Air conditioning overcurrent protective devices can never
exceed what percentage of the motor-rated load current or
the branch circuit selection current (whichever is greater)? -
ANSWERS-225%
Conductors must be derated when installed in conduit -
ANSWERS-on or above rooftops