The service disconnecting means may be installed in all of the following EXCEPT - AN-
SWER the bathroom.
What is the minimum size EMT conduit required for three 14 AWG, six 12 AWG, and three 8
AWG conductors? All wires are THHN solid wire. - ANSWER 1 inch
Overcurrent protection for feeders branch circuits supplying electric vehicle supply equip-
ment shall be sized for continuous duty and shall have a rating of not less than what percent-
age of the maximum load of the electric vehicle supply equipment? - ANSWER 125%
A continuous load is a load where the maximum current is expected to continue for at least
how long? - ANSWER 3 hours
The ampacity of the conductors from the generator terminals to the first distribution de-
vice(s) containing overcurrent protection shall not be less than what percentage of the
nameplate current rating? - ANSWER 115%
ENT shall not be - ANSWER threaded.
A panelboard for a mobile home shall be rated not less than which of the following? - AN-
SWER 50 amperes
Disregarding exceptions, liquidtight flexible metal conduit shall be supported and secured at
intervals not to exceed - ANSWER 4 1/2 feet.
1
,What is the maximum weight of a luminaire that can be supported by the screw shell of a
lampholder? - ANSWER 6 pounds
Disregarding exceptions, what is the minimum size copper-clad aluminum underground ser-
vice conductor permitted? - ANSWER 6 AwG
The base of a 24-foot non-self-supporting ladder shall be placed approximately how far from
the vertical structure upon which is leaning? - ANSWER 6 feet
Alternating-current systems of less than 50 volts shall be grounded where supplied by trans-
formers, if the transformer supply system exceeds which of the following? - ANSWER 150
volts to ground
What is the maximum distance that the emergency controls for an attended self-service mo-
tor fuel dispensing facility shall be located from the dispensers? - ANSWER 100 feet
Where the negative polarity of a dc system does not serve as the connection point for the
grounded conductor, which color finish can be used to identify the negative ungrounded
conductor? - ANSWER black
One horsepower is equal to how many watts? - ANSWER 746
The conductors, including splices and taps, shall not fill the wireway to more than what per-
centage of its area? - ANSWER 75%
outlet for a 12 AWG conductor with a listed outlet branch-circuit type arc-fault circuit inter-
rupter installed at the first outlet What is the maximum permitted length of the branch-cir-
cuit wiring from the branch-circuit overcurrent device to the first box? - ANSWER 70 feet
2
, Which type of surge protection device is permanently connected and intended for installa-
tion between the secondary of the service transformer and the line side of the service dis-
connect overcurrent device? - ANSWER Type 1
What is the power of a 4-ohm resistive load connected to a 120-volt power supply? - AN-
SWER 120v/4ohm=3OA 30X120V= 3600w
Approximately how many kilowatts are used by a three-phase, 480- voit ac motor that draws
a current of 52 amperes and has a power factor rating of 88 % - ANSWER 480v x 52a x
1.735= 43180W x .88= 38000w
What is the greatest root-mean-square (effective) difference of potential between any two
conductors of a circuit defined as? - ANSWER voltage
A resistor has the following colored bands (in order): orange, red, brown, silver. What is the
resistor value? - ANSWER 320 Ohms (10% tolerance)
What is the formula for calculating power (watts)? - ANSWER RxI2
One horsepower is equal to how many watts? - ANSWER 746
A continuous load is a load where the maximum current is expected to continue for at least
how long? - ANSWER 3 hours
For other than a totally enclosed switchboard or switchgear, what is the minimum amount
of space that shall be provided between the top of the unshielded switchboard or switch-
gear and any combustible ceiling? - ANSWER 36"
What is the required width of the working space in front of electrical equipment with a 22-
inch width? - ANSWER 30 inches
3
SWER the bathroom.
What is the minimum size EMT conduit required for three 14 AWG, six 12 AWG, and three 8
AWG conductors? All wires are THHN solid wire. - ANSWER 1 inch
Overcurrent protection for feeders branch circuits supplying electric vehicle supply equip-
ment shall be sized for continuous duty and shall have a rating of not less than what percent-
age of the maximum load of the electric vehicle supply equipment? - ANSWER 125%
A continuous load is a load where the maximum current is expected to continue for at least
how long? - ANSWER 3 hours
The ampacity of the conductors from the generator terminals to the first distribution de-
vice(s) containing overcurrent protection shall not be less than what percentage of the
nameplate current rating? - ANSWER 115%
ENT shall not be - ANSWER threaded.
A panelboard for a mobile home shall be rated not less than which of the following? - AN-
SWER 50 amperes
Disregarding exceptions, liquidtight flexible metal conduit shall be supported and secured at
intervals not to exceed - ANSWER 4 1/2 feet.
1
,What is the maximum weight of a luminaire that can be supported by the screw shell of a
lampholder? - ANSWER 6 pounds
Disregarding exceptions, what is the minimum size copper-clad aluminum underground ser-
vice conductor permitted? - ANSWER 6 AwG
The base of a 24-foot non-self-supporting ladder shall be placed approximately how far from
the vertical structure upon which is leaning? - ANSWER 6 feet
Alternating-current systems of less than 50 volts shall be grounded where supplied by trans-
formers, if the transformer supply system exceeds which of the following? - ANSWER 150
volts to ground
What is the maximum distance that the emergency controls for an attended self-service mo-
tor fuel dispensing facility shall be located from the dispensers? - ANSWER 100 feet
Where the negative polarity of a dc system does not serve as the connection point for the
grounded conductor, which color finish can be used to identify the negative ungrounded
conductor? - ANSWER black
One horsepower is equal to how many watts? - ANSWER 746
The conductors, including splices and taps, shall not fill the wireway to more than what per-
centage of its area? - ANSWER 75%
outlet for a 12 AWG conductor with a listed outlet branch-circuit type arc-fault circuit inter-
rupter installed at the first outlet What is the maximum permitted length of the branch-cir-
cuit wiring from the branch-circuit overcurrent device to the first box? - ANSWER 70 feet
2
, Which type of surge protection device is permanently connected and intended for installa-
tion between the secondary of the service transformer and the line side of the service dis-
connect overcurrent device? - ANSWER Type 1
What is the power of a 4-ohm resistive load connected to a 120-volt power supply? - AN-
SWER 120v/4ohm=3OA 30X120V= 3600w
Approximately how many kilowatts are used by a three-phase, 480- voit ac motor that draws
a current of 52 amperes and has a power factor rating of 88 % - ANSWER 480v x 52a x
1.735= 43180W x .88= 38000w
What is the greatest root-mean-square (effective) difference of potential between any two
conductors of a circuit defined as? - ANSWER voltage
A resistor has the following colored bands (in order): orange, red, brown, silver. What is the
resistor value? - ANSWER 320 Ohms (10% tolerance)
What is the formula for calculating power (watts)? - ANSWER RxI2
One horsepower is equal to how many watts? - ANSWER 746
A continuous load is a load where the maximum current is expected to continue for at least
how long? - ANSWER 3 hours
For other than a totally enclosed switchboard or switchgear, what is the minimum amount
of space that shall be provided between the top of the unshielded switchboard or switch-
gear and any combustible ceiling? - ANSWER 36"
What is the required width of the working space in front of electrical equipment with a 22-
inch width? - ANSWER 30 inches
3
