CALCULATIONS AND BRANCH FEEDER
CIRCUITS FULL PAPER 2026 QUESTIONS WITH
ANSWERS GRADED A+
◉ 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
◉ Continuous loads are calculated at what percentage of the
maximum current rating of the overcurrent device? Answer: 80%
◉ For a 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%