ELECTRICAL LEVEL 3 MODULE 2024
1 LOAD CALCULATIONS AND
BRANCH FEEDER CIRCUITS
EXAM
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design
Letter D is - ANSWERS-100A
QUESTION 2
What is the demand load for one household range with a nameplate rating of
11.75kW, 240V, 1Ø? - ANSWERS-8kW
QUESTION 3
What is the current-carrying capacity for No. 6 THWN aluminum conductors in
conduit run through an ambient temperature of 38°C? - ANSWERS-44 Amps
QUESTION 4
END OF
PAGE 1
, ELECTRICAL LEVEL 3 MODULE 2024
1 LOAD CALCULATIONS AND
BRANCH FEEDER CIRCUITS
EXAM
What is the lighting load on a 120V circuit for six 100W incandescent lights and
four fluorescent fixtures with a ballast rating of 1.5A, all operating continuously
for 8 hours per day? 13.75A - ANSWERS-13.75A
QUESTION 5
What is the load center distance for a 208V, four-wire, three-phase branch circuit
with fixed noncontinuous loads from the source of 60A at 45', 40A at 60', 30A at
75', and 25A at 100' - ANSWERS-63.55'
QUESTION 6
What is the load center length for a branch circuit consisting of noncontinuous
loads of 125A at 80', 75A at 110', and 50A at 100'? - ANSWERS-93'
QUESTION 7
What is the load center length for a branch circuit with noncontinuous loads of
20A at 60' and 50A at 125'? - ANSWERS-106.43'
END OF
PAGE 2
1 LOAD CALCULATIONS AND
BRANCH FEEDER CIRCUITS
EXAM
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design
Letter D is - ANSWERS-100A
QUESTION 2
What is the demand load for one household range with a nameplate rating of
11.75kW, 240V, 1Ø? - ANSWERS-8kW
QUESTION 3
What is the current-carrying capacity for No. 6 THWN aluminum conductors in
conduit run through an ambient temperature of 38°C? - ANSWERS-44 Amps
QUESTION 4
END OF
PAGE 1
, ELECTRICAL LEVEL 3 MODULE 2024
1 LOAD CALCULATIONS AND
BRANCH FEEDER CIRCUITS
EXAM
What is the lighting load on a 120V circuit for six 100W incandescent lights and
four fluorescent fixtures with a ballast rating of 1.5A, all operating continuously
for 8 hours per day? 13.75A - ANSWERS-13.75A
QUESTION 5
What is the load center distance for a 208V, four-wire, three-phase branch circuit
with fixed noncontinuous loads from the source of 60A at 45', 40A at 60', 30A at
75', and 25A at 100' - ANSWERS-63.55'
QUESTION 6
What is the load center length for a branch circuit consisting of noncontinuous
loads of 125A at 80', 75A at 110', and 50A at 100'? - ANSWERS-93'
QUESTION 7
What is the load center length for a branch circuit with noncontinuous loads of
20A at 60' and 50A at 125'? - ANSWERS-106.43'
END OF
PAGE 2
