ELECTRICAL LEVEL 3
MODULE 1 LOAD
CALCULATIONS AND
BRANCH FEEDER CIRCUITS /
ACTUAL QUESTIONS &
ANSWERS FOR
GUARANTEED PASS
2025/2026
1.
2. 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?
○ Answer: 3
, 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)?
○ Answer: 225%
4. Conductors must be derated when installed in conduit:
○ Answer: On or above rooftops stuvia.com+1stuvia.com+1
5. Continuous loads are calculated at what percentage of the maximum current
rating of the overcurrent device?
○ Answer: 80%
6. For a given load and length, the branch circuit voltage drop should not exceed:
○ Answer: 3%
7. For resistance welders, the rating for the overcurrent protection device should not
exceed what percentage of the primary current rating of the welder?
○ Answer: 300%
8. Show window lighting is calculated at 200VA per linear foot plus:
○ Answer: 125%
9. The allowable ampacity for eleven No. 12 THHN copper conductors in a cable
must be adjusted by:
○ Answer: 50%
10. The load for 10' of multi-outlet assembly used to supply several loads
simultaneously is:
○ Answer: 1,800VA numerade.com+3stuvia.com+3stuvia.com+3
11. The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design
Letter D is:
○ Answer: 100A
11. What is the demand load for one household range with a nameplate rating of
11.75kW, 240V, 1Ø?
MODULE 1 LOAD
CALCULATIONS AND
BRANCH FEEDER CIRCUITS /
ACTUAL QUESTIONS &
ANSWERS FOR
GUARANTEED PASS
2025/2026
1.
2. 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?
○ Answer: 3
, 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)?
○ Answer: 225%
4. Conductors must be derated when installed in conduit:
○ Answer: On or above rooftops stuvia.com+1stuvia.com+1
5. Continuous loads are calculated at what percentage of the maximum current
rating of the overcurrent device?
○ Answer: 80%
6. For a given load and length, the branch circuit voltage drop should not exceed:
○ Answer: 3%
7. For resistance welders, the rating for the overcurrent protection device should not
exceed what percentage of the primary current rating of the welder?
○ Answer: 300%
8. Show window lighting is calculated at 200VA per linear foot plus:
○ Answer: 125%
9. The allowable ampacity for eleven No. 12 THHN copper conductors in a cable
must be adjusted by:
○ Answer: 50%
10. The load for 10' of multi-outlet assembly used to supply several loads
simultaneously is:
○ Answer: 1,800VA numerade.com+3stuvia.com+3stuvia.com+3
11. The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design
Letter D is:
○ Answer: 100A
11. What is the demand load for one household range with a nameplate rating of
11.75kW, 240V, 1Ø?
