NM ES3J EXAM (UPDATED) ACTUAL QUESTIONS AND
100% CORRECT ANSWERS
NFPA 72
What is the NFPA code that refers to household firefighting equipment?
22 (NEC 725.179 E)
Type PLTC nonmetallic sheathed shall be a minimum size ___ gauge for class 3
circuits and have an insulation rating of at least 300 V
Grounding Connection
What is the function of a green wire in a manufactured home?
2 Feet
What is the minimum required clearance between a receiving antenna and 250
volt line not insulated?
20
,What is the maximum number of supervisory switches permitted to be connected
to a actuate a single transmitter?
18 (NEC 725.179 H)
According to NEC class 3 circuits are allowed a minimum wire size of what gauge?
8 Feet
NEC 250.5.2.5
What is the minimum length of a grounding rod in an application of less than 50
volts?
Wooden plugs
According to the NEC electrical equipment may not be mounted to concrete,
cinder block, or brick walls with one of these___.
300
(NEC 800.179)
Communication cables shall have a voltage rating of not less than how many volts?
, Connected
(NEC 550.16)
In a manufactured home the grounding bus shall be ___ through the green color
insulated conductor in the supply cord or the feeder wiring to the service ground
in the service equipment located adjacent to the mobile home.
2
(NFPA 72 18.5.2.1)
what is the maximum blink rate on a strobe light per second?
10 foot gas pipe
(NEC 250.5.2 A)
All of the following is acceptable as a ground except?
1 1/4 inches
(NEC 300.4 A 1)
What is the minimum clearance to the edge of a wood stud for a wire hole?
2 Feet
(NEC 810.13)
100% CORRECT ANSWERS
NFPA 72
What is the NFPA code that refers to household firefighting equipment?
22 (NEC 725.179 E)
Type PLTC nonmetallic sheathed shall be a minimum size ___ gauge for class 3
circuits and have an insulation rating of at least 300 V
Grounding Connection
What is the function of a green wire in a manufactured home?
2 Feet
What is the minimum required clearance between a receiving antenna and 250
volt line not insulated?
20
,What is the maximum number of supervisory switches permitted to be connected
to a actuate a single transmitter?
18 (NEC 725.179 H)
According to NEC class 3 circuits are allowed a minimum wire size of what gauge?
8 Feet
NEC 250.5.2.5
What is the minimum length of a grounding rod in an application of less than 50
volts?
Wooden plugs
According to the NEC electrical equipment may not be mounted to concrete,
cinder block, or brick walls with one of these___.
300
(NEC 800.179)
Communication cables shall have a voltage rating of not less than how many volts?
, Connected
(NEC 550.16)
In a manufactured home the grounding bus shall be ___ through the green color
insulated conductor in the supply cord or the feeder wiring to the service ground
in the service equipment located adjacent to the mobile home.
2
(NFPA 72 18.5.2.1)
what is the maximum blink rate on a strobe light per second?
10 foot gas pipe
(NEC 250.5.2 A)
All of the following is acceptable as a ground except?
1 1/4 inches
(NEC 300.4 A 1)
What is the minimum clearance to the edge of a wood stud for a wire hole?
2 Feet
(NEC 810.13)
