Michigan Master Electrician – Questions With
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Terms in this set (267)
3 phase voltage drop 1.73 x K x I x L/A (K = resistance per foot, I = Current, L
= length)
Efficiency 3 phase HP(746)/1.73IE(pf)
When equipment grounding is Table 250.122
accomplished by means of an
equipment ground, the size is
determined from
Parallel conductors in nonmetallic Table 250.122(F)
raceway, grounding is determined by
,When supplying power from a 250.32(B)
grounded system from one building to
another on the same property, it's
required by _____________ to run a separate
equipment grounding conductor in
addition to an insulated neutral
Code for Motor Branch Circuit 430
Motor Branch Circuit conductor size 430.22
code
The ampacity of a #2 TW copper 170% (316.16)
conductor is about _______% greater than
a #6 TW copper conductor
A permitted substitution for cable type CMP, CMR, CM (t760.154d)
FPL is
The primary of a transformer has 120 5 to 1
windings. The secondary has 24. This is
a _____________ transformer.
A panelboard equipped with snap overcurrent protection (408.36A)
switches rated at 30 amps or less shall
have ____________ of 2000 amperes or less
What size overloads are correct for a 27.5 amps
5HP 230V motor with a nameplate FLC
of 22 amps and a service factor of 1.2?
What is the minimum allowed fusible 25 (t430.52)
disconnect for a three phase 480v
15HP motor?
, Kilowatts E x I x 1.73 x PF/1000
KVA E x I x 1.73/1000
HP (output) E x I x (EFF) x PF x 1.73/746
Amps when HP is known HP746/E x EFF x PF x 1.73
Amps when kilowatts are known KW(1000)/E x PF x 1.73
Bends in broadband network cable damage the cable (830.160)
shall not _______________
Can four #3 THW Cu conductors be Yes (Ch 9 T4 T5)
added in a 2" RMC with five #4 RH
conductors
Underground conduit entering a Sealed
building must be _____________
GFCI protection shall be provided for 210.8 (c)
outlets not exceeding 240 volts that
supply boat hoist installed in dwelling
unit locations
Loads for additions to existing 220.16 (A)
installations (dwelling)
PVC expansion table Table 352.44
Equipment bonding jumper to 200 amp Table 250.122 #6 copper and #4 aluminum
sub panel fed with 4/0
Detailed Solutions
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Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (267)
3 phase voltage drop 1.73 x K x I x L/A (K = resistance per foot, I = Current, L
= length)
Efficiency 3 phase HP(746)/1.73IE(pf)
When equipment grounding is Table 250.122
accomplished by means of an
equipment ground, the size is
determined from
Parallel conductors in nonmetallic Table 250.122(F)
raceway, grounding is determined by
,When supplying power from a 250.32(B)
grounded system from one building to
another on the same property, it's
required by _____________ to run a separate
equipment grounding conductor in
addition to an insulated neutral
Code for Motor Branch Circuit 430
Motor Branch Circuit conductor size 430.22
code
The ampacity of a #2 TW copper 170% (316.16)
conductor is about _______% greater than
a #6 TW copper conductor
A permitted substitution for cable type CMP, CMR, CM (t760.154d)
FPL is
The primary of a transformer has 120 5 to 1
windings. The secondary has 24. This is
a _____________ transformer.
A panelboard equipped with snap overcurrent protection (408.36A)
switches rated at 30 amps or less shall
have ____________ of 2000 amperes or less
What size overloads are correct for a 27.5 amps
5HP 230V motor with a nameplate FLC
of 22 amps and a service factor of 1.2?
What is the minimum allowed fusible 25 (t430.52)
disconnect for a three phase 480v
15HP motor?
, Kilowatts E x I x 1.73 x PF/1000
KVA E x I x 1.73/1000
HP (output) E x I x (EFF) x PF x 1.73/746
Amps when HP is known HP746/E x EFF x PF x 1.73
Amps when kilowatts are known KW(1000)/E x PF x 1.73
Bends in broadband network cable damage the cable (830.160)
shall not _______________
Can four #3 THW Cu conductors be Yes (Ch 9 T4 T5)
added in a 2" RMC with five #4 RH
conductors
Underground conduit entering a Sealed
building must be _____________
GFCI protection shall be provided for 210.8 (c)
outlets not exceeding 240 volts that
supply boat hoist installed in dwelling
unit locations
Loads for additions to existing 220.16 (A)
installations (dwelling)
PVC expansion table Table 352.44
Equipment bonding jumper to 200 amp Table 250.122 #6 copper and #4 aluminum
sub panel fed with 4/0
