Exam (elaborations)
26301-17 (Load Calculations Branch And Feeder Circuits): Questions With Solutions (100%)
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26301-17 (Load Calculations Branch And Feeder Circuits): Questions With Solutions (100%)
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26301-17 (Load Calculations Branch And FeederCircuits): Questions With Solutions (100%)
What is the demand load for one household range with a nameplate rating of
11.75kW 220.55 in codebook use column C Right Ans - 8kw
Air conditioning overcurrent protective devices can never exceed what
percentage of the motor rated load current or branch circuit selection current
whichever is greater Right Ans - 225%
NEC requires that the ampacity of branch circuit conductors be derrated when
they are more than how many current carrying conductors in a raceway?
Right Ans - 3 current carrying conductors in a raceway
According to the NEC the total load of show window must be calculated at not
less than 200Va per linear foot of show window Right Ans - 125%
For resistance welders the rating for overcurrent protection device should not
exceed what percentage of the primary rating of the welder Right Ans -
300%
What is the current carrying capacity for a number 6 thwn aluminum
conductor in conduit run through an ambient temperature of 38C Right
Ans - 44a
What is the voltage drop for a 120v single phase 2 wire branch circuit 100ft
long using copper conductors 6,530 circular mils with a nonconductive load of
13 amps (2 wire times length times constant times amps divided by circular
mil) copper constant is 12.9 Right Ans - 5.14v
Calculate the load center length of unknown 3 questions for this one Right
Ans - unknown can doesnt specify have to memorize the equation
What is the required circuit ampacity of noncontinious single load of 8.5kW at
277v single phase load (8.5kw times 1000 divided by 277) Right Ans -
30.69a
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