Electrical Level 3 Module 1 Load
Calculations and Branch Feeder Circuits
Exam Questions And Answers
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? -
correct 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)? -
correct answer ✅225%
Conductors must be derated when installed in conduit -
correct answer ✅on or above rooftops
Continuous loads are calculated at what percentage of the
maximum current rating of the overcurrent device? -
correct answer ✅80%
For a given load and length, the branch circuit voltage drop should
not exceed -
correct answer ✅3%
, Electrical Level 3 Module 1 Load
Calculations and Branch Feeder Circuits
Exam Questions And Answers
For resistance welders, the rating for the overcurrent protection
device should not exceed what percentage of the primary current
rating of the welder? -
correct answer ✅300%
Show window lighting is calculated at 200VA per linear foot plus -
correct answer ✅125%
The allowable ampacity for eleven No. 12 THHN copper conductors
in a cable must be adjusted by -
correct answer ✅50%
The load for 10' of multi-outlet assembly used to supply several
loads simultaneously is -
correct answer ✅1,800VA
The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor
with a Design Letter D is -
correct answer ✅100A
Calculations and Branch Feeder Circuits
Exam Questions And Answers
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? -
correct 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)? -
correct answer ✅225%
Conductors must be derated when installed in conduit -
correct answer ✅on or above rooftops
Continuous loads are calculated at what percentage of the
maximum current rating of the overcurrent device? -
correct answer ✅80%
For a given load and length, the branch circuit voltage drop should
not exceed -
correct answer ✅3%
, Electrical Level 3 Module 1 Load
Calculations and Branch Feeder Circuits
Exam Questions And Answers
For resistance welders, the rating for the overcurrent protection
device should not exceed what percentage of the primary current
rating of the welder? -
correct answer ✅300%
Show window lighting is calculated at 200VA per linear foot plus -
correct answer ✅125%
The allowable ampacity for eleven No. 12 THHN copper conductors
in a cable must be adjusted by -
correct answer ✅50%
The load for 10' of multi-outlet assembly used to supply several
loads simultaneously is -
correct answer ✅1,800VA
The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor
with a Design Letter D is -
correct answer ✅100A
