MICHIGAN MASTER ELECTRICIAN EXAM QUESTIONS WITH CORRECT ANSWERS 100%
VERIFIED| GUARANTEED SUCCESS
A cord and plug connected, free standing partition; the cord shall not be longer than ______
and the supply receptacle (Floor or wall) shall not be farther than ________ from the partition.
2 ft and 12" (605.8 (A & B))
A main building service supplies two branch circuits to a separate building sub panel. Is a
grounding electrode required at the separate building? Yes (250.32 (A))
An equipment grounding conductor and a neutral conductor are run to the separate building;
where is the neutral conductor required to be bonded? main service panel (250.24 (B))
A single non-motor appliance on a branch circuit is rated at 14 amps. The branch over current
protection shall not exceed ____________. 25 amps (422.11 (E)) and 240.6
"MI" cable has a (typical application) maximum operating temperature of ____________ 90
degrees C (310.13)
A non-motor branch circuit , with AWG #10 wire is allowed to have a maximum fuse of what
size? 30 amp
what min. size, EMT conduit may be used for three (3) 75 degree C THHW wires (all same size),
for a 3 phase, 150A commercial service load? 1/0, 1 1/4"
(6) #8 AWG - XHHW current carrying conductors are in a raceway with an ambient temp of 125
degrees (all circuit lugs are rated at 75 degrees C). What is the adjusted ampacity of each of
each conductor after derating? 80% for 4-6 conductors and 75% for heat
,How many strands are in #4 stranded wire? 7 (chapter 9, table 8)
What min. size grounding electrode may be used with a service using 1/0 service conductors?
#6 copper (250.66)
What is the square inch area of: solid #10 THHN? Just the copper without
insulation__________, The entire wire including insulation __________ .008 in square,
.0211 (Chapter 9, table 8, Chapter 9, table 5)
What is the DC resistance of 1000 ft of uncoated solid #10 THHN? 1.21 ohms
What is the hazardous location material group for propane? Class I group D (500.6 a 4)
IR drop = (2L x R x I)/1000
When calculating size for small boxes, which items do not require a calculation for wire fill
_________? Wire connectors, jumpers, conduit fittings, pigtails
A receptacle, switch, sensor and indicating light on the same strap, counts as how many
conductors for box sizing? 2
(4) grounding conductors of the same system enter a box. How many conductors count for
volume sizing? 1
Generally, if different size conductors enter a box, which conductor size is used ti determine
volume deduction for fitting and devices? Largest wire
, How many cubic inches of space is required for a #14 conductor in a box? 2.0 cubic inches
How many #8 THHW compact conductors can be placed inside 1" EMT trade size conduit? 6
(Chapter 9, table 6)
Maximum conductor fill rate for all types of conduit (over 24" in length) with over 2 conductors
- cellular concrete raceways is ___________% 40
An electrical tubing nipple is defined as tubing ___________ " or less in length and may be filled
to a maximum ____________ % of the total available internal square inch area of the tubing.
24, 60
What does "LRC" stand for? Lock Rotor Current
Which motor values are printed in the Code Book, FLA or FLC? Full Load Current
By what percent is the FLC of a motor multiplied, to determine the motor's minimum conductor
ampacity? 125%
If after calculating the branch OCPD size for a motor (using 430.52), and the calculated size is
not a standard OCPD size (as listed in 240.6), do you select the next higher or next lower
standard OCPD size? next higher
Round boxes __________ where conduits or connectors requiring the use of locknuts or
bushing are to be connected to the side of the box. Shall not be used (314.2)
How far can a box used for a device be set back into a plaster wall? 1/4" (314.20)
VERIFIED| GUARANTEED SUCCESS
A cord and plug connected, free standing partition; the cord shall not be longer than ______
and the supply receptacle (Floor or wall) shall not be farther than ________ from the partition.
2 ft and 12" (605.8 (A & B))
A main building service supplies two branch circuits to a separate building sub panel. Is a
grounding electrode required at the separate building? Yes (250.32 (A))
An equipment grounding conductor and a neutral conductor are run to the separate building;
where is the neutral conductor required to be bonded? main service panel (250.24 (B))
A single non-motor appliance on a branch circuit is rated at 14 amps. The branch over current
protection shall not exceed ____________. 25 amps (422.11 (E)) and 240.6
"MI" cable has a (typical application) maximum operating temperature of ____________ 90
degrees C (310.13)
A non-motor branch circuit , with AWG #10 wire is allowed to have a maximum fuse of what
size? 30 amp
what min. size, EMT conduit may be used for three (3) 75 degree C THHW wires (all same size),
for a 3 phase, 150A commercial service load? 1/0, 1 1/4"
(6) #8 AWG - XHHW current carrying conductors are in a raceway with an ambient temp of 125
degrees (all circuit lugs are rated at 75 degrees C). What is the adjusted ampacity of each of
each conductor after derating? 80% for 4-6 conductors and 75% for heat
,How many strands are in #4 stranded wire? 7 (chapter 9, table 8)
What min. size grounding electrode may be used with a service using 1/0 service conductors?
#6 copper (250.66)
What is the square inch area of: solid #10 THHN? Just the copper without
insulation__________, The entire wire including insulation __________ .008 in square,
.0211 (Chapter 9, table 8, Chapter 9, table 5)
What is the DC resistance of 1000 ft of uncoated solid #10 THHN? 1.21 ohms
What is the hazardous location material group for propane? Class I group D (500.6 a 4)
IR drop = (2L x R x I)/1000
When calculating size for small boxes, which items do not require a calculation for wire fill
_________? Wire connectors, jumpers, conduit fittings, pigtails
A receptacle, switch, sensor and indicating light on the same strap, counts as how many
conductors for box sizing? 2
(4) grounding conductors of the same system enter a box. How many conductors count for
volume sizing? 1
Generally, if different size conductors enter a box, which conductor size is used ti determine
volume deduction for fitting and devices? Largest wire
, How many cubic inches of space is required for a #14 conductor in a box? 2.0 cubic inches
How many #8 THHW compact conductors can be placed inside 1" EMT trade size conduit? 6
(Chapter 9, table 6)
Maximum conductor fill rate for all types of conduit (over 24" in length) with over 2 conductors
- cellular concrete raceways is ___________% 40
An electrical tubing nipple is defined as tubing ___________ " or less in length and may be filled
to a maximum ____________ % of the total available internal square inch area of the tubing.
24, 60
What does "LRC" stand for? Lock Rotor Current
Which motor values are printed in the Code Book, FLA or FLC? Full Load Current
By what percent is the FLC of a motor multiplied, to determine the motor's minimum conductor
ampacity? 125%
If after calculating the branch OCPD size for a motor (using 430.52), and the calculated size is
not a standard OCPD size (as listed in 240.6), do you select the next higher or next lower
standard OCPD size? next higher
Round boxes __________ where conduits or connectors requiring the use of locknuts or
bushing are to be connected to the side of the box. Shall not be used (314.2)
How far can a box used for a device be set back into a plaster wall? 1/4" (314.20)
