IDAHO MASTER ELECTRICIAN EXAM – QUESTIONS
AND ANSWERS | VERIFIED AND WELL DETAILED
ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE
*Core Domains*
*National Electrical Code (NEC) Com
*Idaho State Electrical Laws and
*Electrical Calculations and Theory
*Service Entrance and Feeder
*Branch Circuits and Grounding Sy
*Motors, Transformers, and Cont
*Hazardous Locations and Special
*Safety Standards and Professiona
*Introduction*
*The Idaho Master Electrician Exam is a rigorous
the advanced technical proficiency and legal kno
at the master level. This exam ensures that cand
necessary to oversee complex electrical installa
and comply with both the National Electrical Cod
The assessment consists of 200 multiple-choice a
challenge the candidate's ability to apply theo
applications. Emphasis is placed on critical dec
, calculations, and the ethical responsibility of
workplace safety in diverse electrical environme
1. Which of the following is the maximum number of
disconnects permitted for a single service, grouped
in one location?
A. 2
B. 4
C. 6
D. 8
🟢 C. 6
🔴 Explanation: Per NEC 230.71, a service must have
no more than six switches or circuit breakers mounted in
a single enclosure or a group of separate enclosures.
2. In Idaho, a Master Electrician must provide proof of
how many years of experience as a Journeyman
before taking the exam?
,A. 1 year
B. 2 years
C. 4 years
D. 5 years
🟢 C. 4 years
🔴 Explanation: Idaho state regulations generally
require a minimum of four years of experience as a
licensed Journeyman Electrician to qualify for the Master
Electrician license.
3. What is the minimum clear working space depth
required for equipment operating at 480 volts to
ground where there are exposed live parts on one
side and grounded parts on the other (Condition
2)?
A. 3 feet
B. 3.5 feet
C. 4 feet
D. 5 feet
, 🟢 B. 3.5 feet
🔴 Explanation: NEC Table 110.26(A)(1) specifies that
for Condition 2, equipment operating between 151 and
600 volts to ground requires a minimum clear distance of
3.5 feet.
4. A 240-volt single-phase motor draws 20 amperes.
What is the minimum size copper THHN conductor
required for the branch circuit, assuming it is rated
at 125% of the full-load current?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
🟢 C. 10 AWG
🔴 Explanation: 20A x 1.25 = 25A. According to NEC
Table 310.16, 12 AWG THHN is rated for 25A, but for
motor circuits and overcurrent protection, 10 AWG is the
standard selection for a 25A-30A load capacity.
AND ANSWERS | VERIFIED AND WELL DETAILED
ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE
*Core Domains*
*National Electrical Code (NEC) Com
*Idaho State Electrical Laws and
*Electrical Calculations and Theory
*Service Entrance and Feeder
*Branch Circuits and Grounding Sy
*Motors, Transformers, and Cont
*Hazardous Locations and Special
*Safety Standards and Professiona
*Introduction*
*The Idaho Master Electrician Exam is a rigorous
the advanced technical proficiency and legal kno
at the master level. This exam ensures that cand
necessary to oversee complex electrical installa
and comply with both the National Electrical Cod
The assessment consists of 200 multiple-choice a
challenge the candidate's ability to apply theo
applications. Emphasis is placed on critical dec
, calculations, and the ethical responsibility of
workplace safety in diverse electrical environme
1. Which of the following is the maximum number of
disconnects permitted for a single service, grouped
in one location?
A. 2
B. 4
C. 6
D. 8
🟢 C. 6
🔴 Explanation: Per NEC 230.71, a service must have
no more than six switches or circuit breakers mounted in
a single enclosure or a group of separate enclosures.
2. In Idaho, a Master Electrician must provide proof of
how many years of experience as a Journeyman
before taking the exam?
,A. 1 year
B. 2 years
C. 4 years
D. 5 years
🟢 C. 4 years
🔴 Explanation: Idaho state regulations generally
require a minimum of four years of experience as a
licensed Journeyman Electrician to qualify for the Master
Electrician license.
3. What is the minimum clear working space depth
required for equipment operating at 480 volts to
ground where there are exposed live parts on one
side and grounded parts on the other (Condition
2)?
A. 3 feet
B. 3.5 feet
C. 4 feet
D. 5 feet
, 🟢 B. 3.5 feet
🔴 Explanation: NEC Table 110.26(A)(1) specifies that
for Condition 2, equipment operating between 151 and
600 volts to ground requires a minimum clear distance of
3.5 feet.
4. A 240-volt single-phase motor draws 20 amperes.
What is the minimum size copper THHN conductor
required for the branch circuit, assuming it is rated
at 125% of the full-load current?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
🟢 C. 10 AWG
🔴 Explanation: 20A x 1.25 = 25A. According to NEC
Table 310.16, 12 AWG THHN is rated for 25A, but for
motor circuits and overcurrent protection, 10 AWG is the
standard selection for a 25A-30A load capacity.
