Electrical Level 3 Module 1 Load Calculations and
Branch Feeder Circuits Quiz
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? - ANS3
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)? - ANS225%
Conductors must be derated when installed in conduit - ANSon or above rooftops
Continuous loads are calculated at what percentage of the maximum current rating of
the overcurrent device? - ANS80%
For a given load and length, the branch circuit voltage drop should not exceed - ANS3%
For resistance welders, the rating for the overcurrent protection device should not
exceed what percentage of the primary current rating of the welder? - ANS300%
Show window lighting is calculated at 200VA per linear foot plus - ANS125%
The allowable ampacity for eleven No. 12 THHN copper conductors in a cable must be
adjusted by - ANS50%
The load for 10' of multi-outlet assembly used to supply several loads simultaneously is
- ANS1,800VA
The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design Letter
D is - ANS100A
What is the current-carrying capacity for No. 6 THWN aluminum conductors in conduit
run through an ambient temperature of 38°C? - ANS44 Amps
What is the demand load for one household range with a nameplate rating of 11.75kW,
240V, 1Ø? - ANS8kW
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 - ANS13.75A
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' - ANS63.55'
,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'? - ANS93'
What is the load center length for a branch circuit with noncontinuous loads of 20A at
60' and 50A at 125'? - ANS106.43'
What is the load for 55' of show window using the linear foot method? - ANS13,750VA
What is the motor full-load current for a motor with a nameplate rating of 50hp, 460V,
3Ø? - ANS65A
What is the required circuit ampacity for a noncontinuous, three-phase load of 6kW at
208V? - ANS16.65A
What is the required circuit ampacity of a noncontinuous, single-phase load of 8.5kW at
277V? - ANS30.69A
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? - ANS17.25A
What is the total load required by the NEC® for two appliance branch circuits plus a
laundry branch circuit? - ANS4,500VA
What is the voltage drop for a 120V, single-phase, two-wire branch circuit, 100' long,
using copper conductors of 6,530 circular mils with a noncontinuous load of 13A? 5.14V
- ANS5.14V
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%?
- ANSNo. 10
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? - ANSFastened-
in-place utilization equipment
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? - ANS3
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)? - ANS225%
Conductors must be derated when installed in conduit - ANSon or above rooftops
,Continuous loads are calculated at what percentage of the maximum current rating of
the overcurrent device? - ANS80%
For a given load and length, the branch circuit voltage drop should not exceed - ANS3%
For resistance welders, the rating for the overcurrent protection device should not
exceed what percentage of the primary current rating of the welder? - ANS300%
Show window lighting is calculated at 200VA per linear foot plus - ANS125%
The allowable ampacity for eleven No. 12 THHN copper conductors in a cable must be
adjusted by - ANS50%
The load for 10' of multi-outlet assembly used to supply several loads simultaneously is
- ANS1,800VA
The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design Letter
D is - ANS100A
What is the current-carrying capacity for No. 6 THWN aluminum conductors in conduit
run through an ambient temperature of 38°C? - ANS44 Amps
What is the demand load for one household range with a nameplate rating of 11.75kW,
240V, 1Ø? - ANS8kW
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 - ANS13.75A
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' - ANS63.55'
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'? - ANS93'
What is the load center length for a branch circuit with noncontinuous loads of 20A at
60' and 50A at 125'? - ANS106.43'
What is the load for 55' of show window using the linear foot method? - ANS13,750VA
What is the motor full-load current for a motor with a nameplate rating of 50hp, 460V,
3Ø? - ANS65A
What is the required circuit ampacity for a noncontinuous, three-phase load of 6kW at
208V? - ANS16.65A
, What is the required circuit ampacity of a noncontinuous, single-phase load of 8.5kW at
277V? - ANS30.69A
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? - ANS17.25A
What is the total load required by the NEC® for two appliance branch circuits plus a
laundry branch circuit? - ANS4,500VA
What is the voltage drop for a 120V, single-phase, two-wire branch circuit, 100' long,
using copper conductors of 6,530 circular mils with a noncontinuous load of 13A? 5.14V
- ANS5.14V
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%?
- ANSNo. 10
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? - ANSFastened-
in-place utilization equipmentAccording 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? - ANS3
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)? - ANS225%
Conductors must be derated when installed in conduit - ANSon or above rooftops
Continuous loads are calculated at what percentage of the maximum current rating of
the overcurrent device? - ANS80%
For a given load and length, the branch circuit voltage drop should not exceed - ANS3%
For resistance welders, the rating for the overcurrent protection device should not
exceed what percentage of the primary current rating of the welder? - ANS300%
Show window lighting is calculated at 200VA per linear foot plus - ANS125%
The allowable ampacity for eleven No. 12 THHN copper conductors in a cable must be
adjusted by - ANS50%
Branch Feeder Circuits Quiz
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? - ANS3
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)? - ANS225%
Conductors must be derated when installed in conduit - ANSon or above rooftops
Continuous loads are calculated at what percentage of the maximum current rating of
the overcurrent device? - ANS80%
For a given load and length, the branch circuit voltage drop should not exceed - ANS3%
For resistance welders, the rating for the overcurrent protection device should not
exceed what percentage of the primary current rating of the welder? - ANS300%
Show window lighting is calculated at 200VA per linear foot plus - ANS125%
The allowable ampacity for eleven No. 12 THHN copper conductors in a cable must be
adjusted by - ANS50%
The load for 10' of multi-outlet assembly used to supply several loads simultaneously is
- ANS1,800VA
The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design Letter
D is - ANS100A
What is the current-carrying capacity for No. 6 THWN aluminum conductors in conduit
run through an ambient temperature of 38°C? - ANS44 Amps
What is the demand load for one household range with a nameplate rating of 11.75kW,
240V, 1Ø? - ANS8kW
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 - ANS13.75A
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' - ANS63.55'
,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'? - ANS93'
What is the load center length for a branch circuit with noncontinuous loads of 20A at
60' and 50A at 125'? - ANS106.43'
What is the load for 55' of show window using the linear foot method? - ANS13,750VA
What is the motor full-load current for a motor with a nameplate rating of 50hp, 460V,
3Ø? - ANS65A
What is the required circuit ampacity for a noncontinuous, three-phase load of 6kW at
208V? - ANS16.65A
What is the required circuit ampacity of a noncontinuous, single-phase load of 8.5kW at
277V? - ANS30.69A
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? - ANS17.25A
What is the total load required by the NEC® for two appliance branch circuits plus a
laundry branch circuit? - ANS4,500VA
What is the voltage drop for a 120V, single-phase, two-wire branch circuit, 100' long,
using copper conductors of 6,530 circular mils with a noncontinuous load of 13A? 5.14V
- ANS5.14V
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%?
- ANSNo. 10
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? - ANSFastened-
in-place utilization equipment
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? - ANS3
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)? - ANS225%
Conductors must be derated when installed in conduit - ANSon or above rooftops
,Continuous loads are calculated at what percentage of the maximum current rating of
the overcurrent device? - ANS80%
For a given load and length, the branch circuit voltage drop should not exceed - ANS3%
For resistance welders, the rating for the overcurrent protection device should not
exceed what percentage of the primary current rating of the welder? - ANS300%
Show window lighting is calculated at 200VA per linear foot plus - ANS125%
The allowable ampacity for eleven No. 12 THHN copper conductors in a cable must be
adjusted by - ANS50%
The load for 10' of multi-outlet assembly used to supply several loads simultaneously is
- ANS1,800VA
The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design Letter
D is - ANS100A
What is the current-carrying capacity for No. 6 THWN aluminum conductors in conduit
run through an ambient temperature of 38°C? - ANS44 Amps
What is the demand load for one household range with a nameplate rating of 11.75kW,
240V, 1Ø? - ANS8kW
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 - ANS13.75A
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' - ANS63.55'
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'? - ANS93'
What is the load center length for a branch circuit with noncontinuous loads of 20A at
60' and 50A at 125'? - ANS106.43'
What is the load for 55' of show window using the linear foot method? - ANS13,750VA
What is the motor full-load current for a motor with a nameplate rating of 50hp, 460V,
3Ø? - ANS65A
What is the required circuit ampacity for a noncontinuous, three-phase load of 6kW at
208V? - ANS16.65A
, What is the required circuit ampacity of a noncontinuous, single-phase load of 8.5kW at
277V? - ANS30.69A
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? - ANS17.25A
What is the total load required by the NEC® for two appliance branch circuits plus a
laundry branch circuit? - ANS4,500VA
What is the voltage drop for a 120V, single-phase, two-wire branch circuit, 100' long,
using copper conductors of 6,530 circular mils with a noncontinuous load of 13A? 5.14V
- ANS5.14V
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%?
- ANSNo. 10
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? - ANSFastened-
in-place utilization equipmentAccording 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? - ANS3
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)? - ANS225%
Conductors must be derated when installed in conduit - ANSon or above rooftops
Continuous loads are calculated at what percentage of the maximum current rating of
the overcurrent device? - ANS80%
For a given load and length, the branch circuit voltage drop should not exceed - ANS3%
For resistance welders, the rating for the overcurrent protection device should not
exceed what percentage of the primary current rating of the welder? - ANS300%
Show window lighting is calculated at 200VA per linear foot plus - ANS125%
The allowable ampacity for eleven No. 12 THHN copper conductors in a cable must be
adjusted by - ANS50%
