Electrical Level 3 Module 1 Load Calculations
and Branch Feeder Circuits Test STUDY GUIDE
2025/2026 ACCURATE QUESTIONS AND CORRECT
DETAILED ANSWERS || 100% GUARANTEED PASS
<RECENT VERSION>
1. 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
2. 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%
3. Conductors must be derated when installed in conduit - ANSWER ✓ on or
above rooftops
4. Continuous loads are calculated at what percentage of the maximum current
rating of the overcurrent device? - ANSWER ✓ 80%
5. For a given load and length, the branch circuit voltage drop should not
exceed - ANSWER ✓ 3%
6. 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%
7. Show window lighting is calculated at 200VA per linear foot plus -
ANSWER ✓ 125%
8. The allowable ampacity for eleven No. 12 THHN copper conductors in a
cable must be adjusted by - ANSWER ✓ 50%
, 9. The load for 10' of multi-outlet assembly used to supply several loads
simultaneously is - ANSWER ✓ 1,800VA
10.The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a
Design Letter D is - ANSWER ✓ 100A
11.What is the load center length for a branch circuit with noncontinuous loads
of 20A at 60' and 50A at 125'? - ANSWER ✓ 106.43'
12.What is the load for 55' of show window using the linear foot method? -
ANSWER ✓ 13,750VA
13.What is the motor full-load current for a motor with a nameplate rating of
50hp, 460V, 3Ø? - ANSWER ✓ 65A
14.What is the required circuit ampacity for a noncontinuous, three-phase load
of 6kW at 208V? - ANSWER ✓ 16.65A
15.What is the total ampacity for a 120V branch circuit consisting of four
duplex receptacles rated noncontinuous duty and six duplex receptacles rated
continuous duty? - ANSWER ✓ 17.25A
16.What is the total load required by the NEC® for two appliance branch
circuits plus a laundry branch circuit? - ANSWER ✓ 4,500VA
17.What size copper conductor would be required for a 240V, 1Ø circuit
supplying a noncontinuous load of 27.5A at a distance of 145', and a
maximum voltage drop of 3%? - ANSWER ✓ No. 10
18.When connected to 15A or 20A multi-outlet general-purpose branch circuits,
which of the following shall not exceed 50% of the branch circuit ampere
rating? - ANSWER ✓ Fastened-in-place utilization equipment
19.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'? -
ANSWER ✓ 93'
and Branch Feeder Circuits Test STUDY GUIDE
2025/2026 ACCURATE QUESTIONS AND CORRECT
DETAILED ANSWERS || 100% GUARANTEED PASS
<RECENT VERSION>
1. 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
2. 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%
3. Conductors must be derated when installed in conduit - ANSWER ✓ on or
above rooftops
4. Continuous loads are calculated at what percentage of the maximum current
rating of the overcurrent device? - ANSWER ✓ 80%
5. For a given load and length, the branch circuit voltage drop should not
exceed - ANSWER ✓ 3%
6. 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%
7. Show window lighting is calculated at 200VA per linear foot plus -
ANSWER ✓ 125%
8. The allowable ampacity for eleven No. 12 THHN copper conductors in a
cable must be adjusted by - ANSWER ✓ 50%
, 9. The load for 10' of multi-outlet assembly used to supply several loads
simultaneously is - ANSWER ✓ 1,800VA
10.The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a
Design Letter D is - ANSWER ✓ 100A
11.What is the load center length for a branch circuit with noncontinuous loads
of 20A at 60' and 50A at 125'? - ANSWER ✓ 106.43'
12.What is the load for 55' of show window using the linear foot method? -
ANSWER ✓ 13,750VA
13.What is the motor full-load current for a motor with a nameplate rating of
50hp, 460V, 3Ø? - ANSWER ✓ 65A
14.What is the required circuit ampacity for a noncontinuous, three-phase load
of 6kW at 208V? - ANSWER ✓ 16.65A
15.What is the total ampacity for a 120V branch circuit consisting of four
duplex receptacles rated noncontinuous duty and six duplex receptacles rated
continuous duty? - ANSWER ✓ 17.25A
16.What is the total load required by the NEC® for two appliance branch
circuits plus a laundry branch circuit? - ANSWER ✓ 4,500VA
17.What size copper conductor would be required for a 240V, 1Ø circuit
supplying a noncontinuous load of 27.5A at a distance of 145', and a
maximum voltage drop of 3%? - ANSWER ✓ No. 10
18.When connected to 15A or 20A multi-outlet general-purpose branch circuits,
which of the following shall not exceed 50% of the branch circuit ampere
rating? - ANSWER ✓ Fastened-in-place utilization equipment
19.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'? -
ANSWER ✓ 93'
