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133 QUESTIONS AND ANSWERS 100% CORRECT
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Exam of 2 pages for the course IEC at IEC (133)
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133What is the size of Panelboard A on the EWR prints? - answer125-amp
Which of the following is a 3/0 AWG conductor? - answer000
___ allow(s) a circuit or electrical system to be sized at less than its maximum
connected load. - answer diversity
What size breaker is feeding Panelboard B on the EWR prints? - answer100-amp
Electric vehicle charging systems are covered extensively in NEC® Article ___. -
answer625
For purposes of calculating a residential service, the general-purpose lighting load is
calculated at ___ per square foot of area. - answer3 volt-amperes
When calculating residential service load, ___ is allowed for each branch circuit serving
laundry receptacles. - answer1,500 volt-amperes
Service-entrance conductors must have an ampacity ___ the rating of the service
disconnect. - answergreater than or equal to
For a 125-Amp, 120/240-V, 3W residential service, ___ AWG copper THHN/THWN
conductors are the smallest permitted for the ungrounded conductors. - answer2
The neutral conductor for a service must be sized to carry ___.
I. the maximum unbalanced current
II. the maximum available ground-fault current - answerboth I & II
Loads, such as heating and air conditioning, that do not operate at the same time are
said to be noncoincident loads. While separate circuits must be designed to serve each
load, when calculating service load only the ___ of two noncoincident loads needs to be
included. - answerlarger
When calculating the size of the required service, you should consult household electric
clothes dryer demand factors given in Table ___. - answer220.54
The minimum size service disconnect for a single-family dwelling with a computed load
of 10 kVA is ___ amperes. - answer100
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