Which enclosure is suitable for use in Class 1 hazardous locations?

NCCER Electrical 2 Module 5

Quiz
•
Construction
•
University
•
Easy
Davian Alston
Used 5+ times
FREE Resource
23 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Type 1
Type 3
Type 4
Type 7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An enclosure installed in a dry residential basement would most likely be a NEMA ______.
Type 1
Type 3
Type 7
Type 9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The first number in the IP classification system designates the degree of protection against _______.
air infiltration
solid objects
fire hazards
water
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When attaching metal conduit to an enclosure that contains a bonding jumper, the jumper can be connected to a ___.
standard locknut
plastic locknut
grounding locknut
plastic bushing
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A Myers hub is best described as a(n) _____.
gasketed fitting
sealing locknut
setscrew fitting
insulated bushing
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The minimum length of a pull box with one 2" conduit and two 1" conduits entering on one side of the box and exiting at a 90* angle on another side of the box is ________. (Assume the system is less than 1,000V.)
14"
16"
18"
24"
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For a straight pull, the minimum length for a pull box with two 2" conduits and one 3" conduit is_________. (Assume the system is less than 1,000.)
24"
26"
32"
34"
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