Electrical Apprenticeship Year 1
Telecommunications and electronic equipment - ANSWER-Category 1 meters are rated
for _______________.
residential current - ANSWER-Category 2 meters are rated for _______________.
industrial purposes - ANSWER-Category 3 meters are rated for _______________.
three-phase utility and outdoor conductors - ANSWER-Category 4 meters are rated for
_______________.
The length of a straight pull for multiple raceways must be at least ____ times the trade
size (metric designator) of the largest single raceway. - ANSWER-eight
Conduit pro isions - ANSWER-chapter 9 table 4
v
Raceway Pro isions - ANSWER-Table 348.22
v
ENT shall be secured e ery - ANSWER-3 feet (362.30 A)
v
Contact of dissimilar metals (except for the combination of aluminum and steel) should
be a oided where er possible to lessen the potential for ____. - ANSWER-gal anic action
v v v
Grounding conductors are required for circuits o er ____ amperes. (When using Flexible
v
Metal Conduit) - ANSWER-20
An indi idual branch circuit ____. - ANSWER-supplies only one utilization equipment
v
As required by 110.26, working space around electrical equipment is primarily
concerned with ____. - ANSWER-ser ice and escape due to emergency
v
A 12 AWG copper conductor requires ____ free space within a de ice box. - ANSWER-
v
2,25 in. cubed
, Each yoke or strap containing one or more de ices or equipment in a de ice box counts
v v
as ____ conductor(s). - ANSWER-two
Concealed means ____ by the building structure or finish. - ANSWER-rendered
inaccessible
For a one-family dwelling, at least one receptacle outlet accessible while standing at
grade le el and located not more than _____ft. abo e grade shall be installed at the front
v v
and back of the dwelling. - ANSWER-6.5
At least one 125- olt, single phase, 15- or 20-ampere-rated receptacle outlet shall be
v
installed within _______ ft of the electrical ser ice equipment in a multifamily dwelling. -
v
ANSWER-25
Minimum clothes dryer demand load - ANSWER-5000 watts 220.54
Load Calculations - ANSWER-idk, mang
Ser ice drop conductors shall ha e a ertical clearance of not less than _____________
v v v
feet abo e the roof surface - ANSWER-8
v
Equipment grounding conductor pro isions - ANSWER-Table 250.122 and 250.102
v
What is the ser ice demand load in kW for an apartment complex containing ten each of
v
the following. 15 kW ranges, 13 kW ranges, 11 kW ranges, and 9 kW ranges. the ser ice v
is single phase. - ANSWER-Table 220.55
First find the a erage kW using 12 kW for any range rated less than 12 kW
v
(10 x 15) + (10 x 13) + (10 x 12) + (10 x 12) = 150 + 130 + 120 + 120 = 520 kW
[Note that we used 12 kW for the 11kW and the 9 kW]
520 kW / 40 ranges = 13 kW a erage range size.
v
Column C shows 15kw + 40 (number of ranges) = 55 kW
This 55kW must be increased by 5% for each kW abo e 12 the a erage size is.
v v
55 kW x 1.05 = 57.75 kW demand load.
In_________________, remote, central, or automatic control of lighting shall be
permitted - ANSWER-hallways, staircases, and outdoor entrances
A grounded circuit conductor shall be permitted to ground non-current carrying metal
parts of equipment on the ______________ side of the ac ser ice disconnecting means -
v
ANSWER-supply
Equipment grounding conductors, where installed, shall be increased in size
proportionately according to________________ - ANSWER-Circular mil area of the
ungrounded conductors
Telecommunications and electronic equipment - ANSWER-Category 1 meters are rated
for _______________.
residential current - ANSWER-Category 2 meters are rated for _______________.
industrial purposes - ANSWER-Category 3 meters are rated for _______________.
three-phase utility and outdoor conductors - ANSWER-Category 4 meters are rated for
_______________.
The length of a straight pull for multiple raceways must be at least ____ times the trade
size (metric designator) of the largest single raceway. - ANSWER-eight
Conduit pro isions - ANSWER-chapter 9 table 4
v
Raceway Pro isions - ANSWER-Table 348.22
v
ENT shall be secured e ery - ANSWER-3 feet (362.30 A)
v
Contact of dissimilar metals (except for the combination of aluminum and steel) should
be a oided where er possible to lessen the potential for ____. - ANSWER-gal anic action
v v v
Grounding conductors are required for circuits o er ____ amperes. (When using Flexible
v
Metal Conduit) - ANSWER-20
An indi idual branch circuit ____. - ANSWER-supplies only one utilization equipment
v
As required by 110.26, working space around electrical equipment is primarily
concerned with ____. - ANSWER-ser ice and escape due to emergency
v
A 12 AWG copper conductor requires ____ free space within a de ice box. - ANSWER-
v
2,25 in. cubed
, Each yoke or strap containing one or more de ices or equipment in a de ice box counts
v v
as ____ conductor(s). - ANSWER-two
Concealed means ____ by the building structure or finish. - ANSWER-rendered
inaccessible
For a one-family dwelling, at least one receptacle outlet accessible while standing at
grade le el and located not more than _____ft. abo e grade shall be installed at the front
v v
and back of the dwelling. - ANSWER-6.5
At least one 125- olt, single phase, 15- or 20-ampere-rated receptacle outlet shall be
v
installed within _______ ft of the electrical ser ice equipment in a multifamily dwelling. -
v
ANSWER-25
Minimum clothes dryer demand load - ANSWER-5000 watts 220.54
Load Calculations - ANSWER-idk, mang
Ser ice drop conductors shall ha e a ertical clearance of not less than _____________
v v v
feet abo e the roof surface - ANSWER-8
v
Equipment grounding conductor pro isions - ANSWER-Table 250.122 and 250.102
v
What is the ser ice demand load in kW for an apartment complex containing ten each of
v
the following. 15 kW ranges, 13 kW ranges, 11 kW ranges, and 9 kW ranges. the ser ice v
is single phase. - ANSWER-Table 220.55
First find the a erage kW using 12 kW for any range rated less than 12 kW
v
(10 x 15) + (10 x 13) + (10 x 12) + (10 x 12) = 150 + 130 + 120 + 120 = 520 kW
[Note that we used 12 kW for the 11kW and the 9 kW]
520 kW / 40 ranges = 13 kW a erage range size.
v
Column C shows 15kw + 40 (number of ranges) = 55 kW
This 55kW must be increased by 5% for each kW abo e 12 the a erage size is.
v v
55 kW x 1.05 = 57.75 kW demand load.
In_________________, remote, central, or automatic control of lighting shall be
permitted - ANSWER-hallways, staircases, and outdoor entrances
A grounded circuit conductor shall be permitted to ground non-current carrying metal
parts of equipment on the ______________ side of the ac ser ice disconnecting means -
v
ANSWER-supply
Equipment grounding conductors, where installed, shall be increased in size
proportionately according to________________ - ANSWER-Circular mil area of the
ungrounded conductors
