ELECTRICAL LEVEL 3 MODULE 1 LOAD
CALCULATIONS AND BRANCH FEEDER CIRCUITS
QUESTIONS AND ANSWERS 2026/2027
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 a noncontinuous load of
13A? 5.14V - ANSWER -5.14V
What size copper conductor would be required for a 240V, 1Ø 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% of the branch circuit ampere rating? -
ANSWER -Fastened-in-place utilization equipment
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? - ANSWER -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)? - ANSWER -225%
Conductors must be derated when installed in conduit - ANSWER -on or above
rooftops
