Which enclosure is suitable for use in Class I hazardous locations?
a. Type 1
b. Type 3
c. Type 4
d. Type 7 - CORRECT ANSWER-d. Type 7
An enclosure installed in a dry residential basement would mostly likely be a NEMA
_____.
a. Type 1
b. Type 3
c. Type 7
d. Type 9 - CORRECT ANSWER-a. Type 1
The first number in the IP classification system designates the degree of protection
against _______.
a. Air infiltration
b. Solid objects
c. Fire hazard
d. Water - CORRECT ANSWER-b. Solid objects
, When attaching metal conduit to an enclosure that contains a bonding jumper, the
jumper can be connected to a ______.
a. Standard locknut
b. Plastic locknut
c. Grounding locknut
d. Plastic bushing - CORRECT ANSWER-c. Grounding locknut
A Myers hub is best described as a(n) _____.
a. Gasket fitting
b. Sealing locknut
c. Setscrew fitting
d. Insulated bushing - CORRECT ANSWER-a. Gasketed fitting
For a pull box housing shielded conductors carrying over 1,000v, and used in an
angled pull, the distance between a conductor entry and exit must be _____.
a. 24 times greater than the OD of the conductor
b. 30 times greater than the OD of the conductor
c. 36 times greater than the OD of the conductor
d. 45 times greater than the OD of the conductor - CORRECT ANSWER-c. 36 times
greater than the OD of the conductor
a. Type 1
b. Type 3
c. Type 4
d. Type 7 - CORRECT ANSWER-d. Type 7
An enclosure installed in a dry residential basement would mostly likely be a NEMA
_____.
a. Type 1
b. Type 3
c. Type 7
d. Type 9 - CORRECT ANSWER-a. Type 1
The first number in the IP classification system designates the degree of protection
against _______.
a. Air infiltration
b. Solid objects
c. Fire hazard
d. Water - CORRECT ANSWER-b. Solid objects
, When attaching metal conduit to an enclosure that contains a bonding jumper, the
jumper can be connected to a ______.
a. Standard locknut
b. Plastic locknut
c. Grounding locknut
d. Plastic bushing - CORRECT ANSWER-c. Grounding locknut
A Myers hub is best described as a(n) _____.
a. Gasket fitting
b. Sealing locknut
c. Setscrew fitting
d. Insulated bushing - CORRECT ANSWER-a. Gasketed fitting
For a pull box housing shielded conductors carrying over 1,000v, and used in an
angled pull, the distance between a conductor entry and exit must be _____.
a. 24 times greater than the OD of the conductor
b. 30 times greater than the OD of the conductor
c. 36 times greater than the OD of the conductor
d. 45 times greater than the OD of the conductor - CORRECT ANSWER-c. 36 times
greater than the OD of the conductor