Residential Electrical Inspection/ Electrical
{National Electrical Code} Competency Study Guide
Comprehensive Resource To Help You Ace 2026-2027
Exams Includes Frequently Tested Questions With
ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. The method for installing a UF cable is __________.
A) above ground
B) direct burial
C) neither of these methods - Correct Answer: Direct burial
2. Service drops around a swimming pool should be __________.
A) 10 feet above and 20 feet horizontally away
B) 22-1/2 feet above and 10 feet horizontally away
C) 18 feet above and 10 feet horizontally away
D) 15 feet above and 8 feet horizontally away - Correct Answer: 22-
1/2 feet above and 10 feet horizontal away
3. Every 5 to 6 feet, rigid service masts should be secured to
________________.
A) the structure points
B) the hitch of the roof
C) the base of the home - Correct Answer: The structure points
,4. The typical supply for a Square brand electric meter is a ______ amps.
A) 200
B) 100
C) 60 - Correct Answer: 100
5. An electrical service mast that extends 5 feet or more above the roof
surface needs to be supported ____________.
A) by a mast
B) separately
C) by the roof structure - Correct Answer: Separately
6. The clearance for open overhead service conductors from the front,
bottom, and sides of windows that ______ is 3 feet.
A) do not open
B) are stained glass
C) are tinted
D) open - Correct Answer: Open
7. Most modern 200-amp electrical meters are marked _______.
A) 100 UL
B) 200 CL
, C) 200 UL
D) 100 CL - Correct Answer: 200 CL
8. Most areas require two means of____________ grounding .
A) separate
B) joined - Correct Answer: Separate
9. The minimum size for a copper grounding electrode rod _______.
A) 5/8-inch diameter and 6 feet long
B) 1/2-inch diameter and 8 feet long
C) 1/2-inch diameter and 6 feet long
D) 5/8-inch diameter and 8 feet long - Correct Answer: 5/8-inch
diameter and 8 feet long
10.Gas supply piping cannot be used as a ____________.
A) amp supplier
B) none of these
C) breaker
D) grounding means - Correct Answer: Grounding means
11.____________ need to be bonded to ground.
A) All panel enclosures
, B) Only panel enclosures containing the service disconnect - Correct
Answer: All panel enclosures
12.The grounded and grounding conductors ________________ bus in the
service panel.
A) must have a separate
B) can share a common - Correct Answer: Can share a common
13.The ungrounded and grounding conductors can share a common bus
__________.
A) never
B) in the service panel
C) in any distribution panels
D) in the downstream distribution panels - Correct Answer: Never
14.How can you bond a remote distribution panel?
A) By connecting the enclosure to the neutral bus
B) By connecting the enclosure to the grounding bus
C) By connecting the enclosure to the ungrounded conductor bus -
Correct Answer: By connecting the enclosure to the grounding bus
15.Conductors between the main service disconnect to the distribution panels
are called __________.
{National Electrical Code} Competency Study Guide
Comprehensive Resource To Help You Ace 2026-2027
Exams Includes Frequently Tested Questions With
ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. The method for installing a UF cable is __________.
A) above ground
B) direct burial
C) neither of these methods - Correct Answer: Direct burial
2. Service drops around a swimming pool should be __________.
A) 10 feet above and 20 feet horizontally away
B) 22-1/2 feet above and 10 feet horizontally away
C) 18 feet above and 10 feet horizontally away
D) 15 feet above and 8 feet horizontally away - Correct Answer: 22-
1/2 feet above and 10 feet horizontal away
3. Every 5 to 6 feet, rigid service masts should be secured to
________________.
A) the structure points
B) the hitch of the roof
C) the base of the home - Correct Answer: The structure points
,4. The typical supply for a Square brand electric meter is a ______ amps.
A) 200
B) 100
C) 60 - Correct Answer: 100
5. An electrical service mast that extends 5 feet or more above the roof
surface needs to be supported ____________.
A) by a mast
B) separately
C) by the roof structure - Correct Answer: Separately
6. The clearance for open overhead service conductors from the front,
bottom, and sides of windows that ______ is 3 feet.
A) do not open
B) are stained glass
C) are tinted
D) open - Correct Answer: Open
7. Most modern 200-amp electrical meters are marked _______.
A) 100 UL
B) 200 CL
, C) 200 UL
D) 100 CL - Correct Answer: 200 CL
8. Most areas require two means of____________ grounding .
A) separate
B) joined - Correct Answer: Separate
9. The minimum size for a copper grounding electrode rod _______.
A) 5/8-inch diameter and 6 feet long
B) 1/2-inch diameter and 8 feet long
C) 1/2-inch diameter and 6 feet long
D) 5/8-inch diameter and 8 feet long - Correct Answer: 5/8-inch
diameter and 8 feet long
10.Gas supply piping cannot be used as a ____________.
A) amp supplier
B) none of these
C) breaker
D) grounding means - Correct Answer: Grounding means
11.____________ need to be bonded to ground.
A) All panel enclosures
, B) Only panel enclosures containing the service disconnect - Correct
Answer: All panel enclosures
12.The grounded and grounding conductors ________________ bus in the
service panel.
A) must have a separate
B) can share a common - Correct Answer: Can share a common
13.The ungrounded and grounding conductors can share a common bus
__________.
A) never
B) in the service panel
C) in any distribution panels
D) in the downstream distribution panels - Correct Answer: Never
14.How can you bond a remote distribution panel?
A) By connecting the enclosure to the neutral bus
B) By connecting the enclosure to the grounding bus
C) By connecting the enclosure to the ungrounded conductor bus -
Correct Answer: By connecting the enclosure to the grounding bus
15.Conductors between the main service disconnect to the distribution panels
are called __________.
