NM ES-3 Test exam questions and answers verified 2025

NM ES-3 Test exam
1. What is the
minimum clearance
to the edge of a
wood 1 1/4
inches(NEC 300.4 A
stud for a wire
hole? 1)

2. What is the
minimum
separation
between a class 1
fire 1/4 inch alarm
circuit conductor
and a class 2 or
class 3 circuit?

3. A basic alarm
system will have __
power sources. 2

4. What is the
minimum required
clearance between
a 2 Feet
receiving antenna
and 250 volt line
not insulated?

5. The minimum
clearance for an



, NM ES-3 Test exam
antenna to other
con- 2 Feet (NEC
810.13) ductors is?

6. How far away must
communications
cables be from 2
inches electric,
light, or power
conductors

7. what is the
maximum blink rate
on a strobe light
per 2 (NFPA 72
18.5.2.1) second?

8. On a voice alarm
system what is the
minimum number 2
(NFPA 72
24.4.1.2.1) of cycles
it has to report an
evacuation
procedure?

9. What is the
minimum required
height for a
propriety 3 1/2 feet
or 42 inches



, NM ES-3 Test exam
manual pull fire
alarm?

10. An overhead feeder
must have a
clearance of __
from 3 Feet (NEC
225.19 B)
chimneys, radio,
and television
antennas.

11. The NEC classifies
Continuous Load as
equipment run- 3
hours ning at a
maximum load of
__ ____?

12. 3 hours or more
A continuous load is a load where the maximum current is
expected to continue for a certain length of time. This amount
of time is?

13. The minimum head
room of working
space above ser-
6.5 feet vice
equipment,
switchboards, panel
boards, or motor