TEXAS MASTER ELECTRICIAN EXAMINATION NEWEST EVALUATED EXAM
PRACTICE 100 QUESTIONS 2026-2027|ORIGINAL QUESTIONS & ANSWERS
|DETAILED RATIONALES |HINTED COMPLETE EXAM PREP GRADED A+*INSTANT
DOWNLOAD PDF*
1. A 120/240-volt single-phase dwelling service supplies a calculated load of
180 amperes. What is the minimum standard service rating permitted for
this dwelling service?
A. 150 amperes
B. 175 amperes
C. 200 amperes
D. 225 amperes
ANSWER: C. 200 amperes
The calculated load must not exceed the rating of the service. A standard 200-
ampere service is the appropriate rating.
2. A feeder supplies a continuous load of 96 amperes and a noncontinuous
load of 40 amperes. What is the minimum ampacity required for the feeder
conductors?
A. 136 amperes
B. 144 amperes
C. 160 amperes
D. 176 amperes
ANSWER: C. 160 amperes
The continuous load is multiplied by 125%: 96 × 1.25 = 120 A. Adding the
noncontinuous load gives 120 + 40 = 160 A.
3. A 120-volt branch circuit supplies a continuous load of 16 amperes. What is
the minimum branch-circuit rating required?
A. 15 amperes
B. 16 amperes
,C. 18 amperes
D. 20 amperes
ANSWER: D. 20 amperes
Continuous loads are calculated at 125%. Therefore, 16 × 1.25 = 20 amperes.
4. Which conductor is generally permitted to be reidentified with white or
gray tape when used as a grounded conductor?
A. 14 AWG copper
B. 12 AWG copper
C. 10 AWG copper
D. 4 AWG copper
ANSWER: D. 4 AWG copper
Conductors 4 AWG or larger may be permanently reidentified at their
terminations to indicate their grounded-conductor function.
5. What is the maximum number of service disconnecting means permitted
for a single service under the NEC?
A. Two
B. Four
C. Six
D. Eight
ANSWER: C. Six
The service disconnecting means may consist of not more than six switches or
circuit breakers grouped in one location or in a switchboard.
6. A dwelling has a 120/240-volt, single-phase service. What is the minimum
number of small-appliance branch circuits required for the kitchen and
similar areas?
A. One
B. Two
,C. Three
D. Four
ANSWER: B. Two
At least two 20-ampere small-appliance branch circuits are required for the
required small-appliance loads in a dwelling.
7. What is the minimum required rating of the branch circuit supplying a
dwelling bathroom receptacle outlet?
A. 15 amperes
B. 20 amperes
C. 25 amperes
D. 30 amperes
ANSWER: B. 20 amperes
The required bathroom receptacle outlet must be supplied by a 20-ampere branch
circuit meeting the applicable dwelling requirements.
8. A dwelling kitchen countertop receptacle is located within 6 feet of the
outside edge of a sink. Which protection is generally required?
A. AFCI only
B. Surge protection only
C. GFCI protection
D. Overcurrent protection only
ANSWER: C. GFCI protection
Dwelling receptacles serving kitchen countertop surfaces require GFCI protection
under the applicable NEC provisions.
9. What is the maximum standard overcurrent protection permitted for 14
AWG copper conductors under the general rule?
A. 10 amperes
B. 15 amperes
, C. 20 amperes
D. 25 amperes
ANSWER: B. 15 amperes
14 AWG copper conductors are generally limited to 15 amperes unless a specific
NEC provision permits otherwise.
10.What is the maximum standard overcurrent protection permitted for 12
AWG copper conductors under the general rule?
A. 15 amperes
B. 20 amperes
C. 25 amperes
D. 30 amperes
ANSWER: B. 20 amperes
12 AWG copper conductors are generally protected at no more than 20 amperes
under the general conductor ampacity rules.
11.A conductor has a calculated ampacity of 87 amperes. What standard
overcurrent device rating may generally be used when the calculated
ampacity does not correspond to a standard rating?
A. 80 amperes
B. 90 amperes
C. 95 amperes
D. 100 amperes
ANSWER: B. 90 amperes
Where conductor ampacity falls between standard overcurrent-device ratings, the
next higher standard rating may be permitted when the applicable NEC conditions
are satisfied.
12.A 120/240-volt single-phase feeder supplies a balanced load of 48 amperes
at 240 volts. What is the approximate power supplied?
PRACTICE 100 QUESTIONS 2026-2027|ORIGINAL QUESTIONS & ANSWERS
|DETAILED RATIONALES |HINTED COMPLETE EXAM PREP GRADED A+*INSTANT
DOWNLOAD PDF*
1. A 120/240-volt single-phase dwelling service supplies a calculated load of
180 amperes. What is the minimum standard service rating permitted for
this dwelling service?
A. 150 amperes
B. 175 amperes
C. 200 amperes
D. 225 amperes
ANSWER: C. 200 amperes
The calculated load must not exceed the rating of the service. A standard 200-
ampere service is the appropriate rating.
2. A feeder supplies a continuous load of 96 amperes and a noncontinuous
load of 40 amperes. What is the minimum ampacity required for the feeder
conductors?
A. 136 amperes
B. 144 amperes
C. 160 amperes
D. 176 amperes
ANSWER: C. 160 amperes
The continuous load is multiplied by 125%: 96 × 1.25 = 120 A. Adding the
noncontinuous load gives 120 + 40 = 160 A.
3. A 120-volt branch circuit supplies a continuous load of 16 amperes. What is
the minimum branch-circuit rating required?
A. 15 amperes
B. 16 amperes
,C. 18 amperes
D. 20 amperes
ANSWER: D. 20 amperes
Continuous loads are calculated at 125%. Therefore, 16 × 1.25 = 20 amperes.
4. Which conductor is generally permitted to be reidentified with white or
gray tape when used as a grounded conductor?
A. 14 AWG copper
B. 12 AWG copper
C. 10 AWG copper
D. 4 AWG copper
ANSWER: D. 4 AWG copper
Conductors 4 AWG or larger may be permanently reidentified at their
terminations to indicate their grounded-conductor function.
5. What is the maximum number of service disconnecting means permitted
for a single service under the NEC?
A. Two
B. Four
C. Six
D. Eight
ANSWER: C. Six
The service disconnecting means may consist of not more than six switches or
circuit breakers grouped in one location or in a switchboard.
6. A dwelling has a 120/240-volt, single-phase service. What is the minimum
number of small-appliance branch circuits required for the kitchen and
similar areas?
A. One
B. Two
,C. Three
D. Four
ANSWER: B. Two
At least two 20-ampere small-appliance branch circuits are required for the
required small-appliance loads in a dwelling.
7. What is the minimum required rating of the branch circuit supplying a
dwelling bathroom receptacle outlet?
A. 15 amperes
B. 20 amperes
C. 25 amperes
D. 30 amperes
ANSWER: B. 20 amperes
The required bathroom receptacle outlet must be supplied by a 20-ampere branch
circuit meeting the applicable dwelling requirements.
8. A dwelling kitchen countertop receptacle is located within 6 feet of the
outside edge of a sink. Which protection is generally required?
A. AFCI only
B. Surge protection only
C. GFCI protection
D. Overcurrent protection only
ANSWER: C. GFCI protection
Dwelling receptacles serving kitchen countertop surfaces require GFCI protection
under the applicable NEC provisions.
9. What is the maximum standard overcurrent protection permitted for 14
AWG copper conductors under the general rule?
A. 10 amperes
B. 15 amperes
, C. 20 amperes
D. 25 amperes
ANSWER: B. 15 amperes
14 AWG copper conductors are generally limited to 15 amperes unless a specific
NEC provision permits otherwise.
10.What is the maximum standard overcurrent protection permitted for 12
AWG copper conductors under the general rule?
A. 15 amperes
B. 20 amperes
C. 25 amperes
D. 30 amperes
ANSWER: B. 20 amperes
12 AWG copper conductors are generally protected at no more than 20 amperes
under the general conductor ampacity rules.
11.A conductor has a calculated ampacity of 87 amperes. What standard
overcurrent device rating may generally be used when the calculated
ampacity does not correspond to a standard rating?
A. 80 amperes
B. 90 amperes
C. 95 amperes
D. 100 amperes
ANSWER: B. 90 amperes
Where conductor ampacity falls between standard overcurrent-device ratings, the
next higher standard rating may be permitted when the applicable NEC conditions
are satisfied.
12.A 120/240-volt single-phase feeder supplies a balanced load of 48 amperes
at 240 volts. What is the approximate power supplied?
