Electrical Level 3
Module 1 Load
Calculations and
Branch Feeder Circuits
100% VERIFIED
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
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%
Show window lighting is calculated at 200VA per linear foot plus - ANSWER 125%
Module 1 Load
Calculations and
Branch Feeder Circuits
100% VERIFIED
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
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%
Show window lighting is calculated at 200VA per linear foot plus - ANSWER 125%
