Electrical-Level 3, Chapter 1
A continuous load has a maximum current of 25A. What is the minimum rating of the
branch circuit that can beinstalled? - ANS - 40A
A continuous load is defined by the NEC® as a load whose maximum current is
expected to continue for at least_____. - ANS - 3 hours
A warehouse has12,500 ft2 of floor area. What is the estimated general lighting load in
VA? - ANS - 3,125
At aminimum, a 60' long show window would need_____ receptacles. - ANS - 5
Branch circuit conductors supplying continuous duty loads are calculated at_____. -
ANS - 25% of the rated load
How many receptacle outlets in adentist's office can be connected to a20A,
single-phase 120V circuit if all of the outlets will supply noncontinuousloads? (Note:
NEC Section220.14(I) assigns a load of 180VA to each nonresidentialoutlet.) - ANS -
13
How many receptacles are required for 90 linear feet of show windowarea? - ANS - 8
Load calculations for circuits supplying lighting units with ballasts are based upon
_____. - ANS - the ampere ratings of the ballasts
The general lighting load(expressed as a unit load per squarefoot) for a warehouse is
_____. - ANS - 1/4VA/sq ft
The general lighting load for a store is_____. - ANS - 3VA/sq ft
The load for 6 ofmulti-outlet assembly used simultaneously is_____. - ANS -
1,080VA
The voltage drop between the point of service and the farthest outlet in a branch circuit
should not exceed_____. - ANS - 3%
A continuous load has a maximum current of 25A. What is the minimum rating of the
branch circuit that can beinstalled? - ANS - 40A
A continuous load is defined by the NEC® as a load whose maximum current is
expected to continue for at least_____. - ANS - 3 hours
A warehouse has12,500 ft2 of floor area. What is the estimated general lighting load in
VA? - ANS - 3,125
At aminimum, a 60' long show window would need_____ receptacles. - ANS - 5
Branch circuit conductors supplying continuous duty loads are calculated at_____. -
ANS - 25% of the rated load
How many receptacle outlets in adentist's office can be connected to a20A,
single-phase 120V circuit if all of the outlets will supply noncontinuousloads? (Note:
NEC Section220.14(I) assigns a load of 180VA to each nonresidentialoutlet.) - ANS -
13
How many receptacles are required for 90 linear feet of show windowarea? - ANS - 8
Load calculations for circuits supplying lighting units with ballasts are based upon
_____. - ANS - the ampere ratings of the ballasts
The general lighting load(expressed as a unit load per squarefoot) for a warehouse is
_____. - ANS - 1/4VA/sq ft
The general lighting load for a store is_____. - ANS - 3VA/sq ft
The load for 6 ofmulti-outlet assembly used simultaneously is_____. - ANS -
1,080VA
The voltage drop between the point of service and the farthest outlet in a branch circuit
should not exceed_____. - ANS - 3%
