
PEC Sizes (0mm-76mm)
Authored by Reggie Tano
Science
University

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42 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metal covers for boxes shall be lined with firmly attached insulating material NOT less than
0.80 mm.
0.50 mm.
0.90 mm.
0.70 mm.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The construction of metal cabinets and cutout boxes shall be such as to secure strength and rigidity. If constructed of uncoated sheet steel, the metal thickness should NOT be less than
1.5 mm
1.8 mm
1.35 mm
2 mm
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cabinet and cutout boxes shall have an air space of at least ______ between the base of the device and the wall of any metal cabinet or cutout box in which the device is mounted.
1 mm
2 mm
3 mm
4 mm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a damp or wet locations, cabinets and cutout boxes of the surface type shall be mounted with at least _____ air space between the enclosure and the wall.
4 mm
6 mm
6.4 mm
5 mm
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In walls or ceilings of concrete, tile, or other non-combustible materials, boxes and fittings shall be installed that the front edge of the box or fitting will NOT set back of the finished surface more than
7 mm
4 mm.
5 mm
6.4 mm.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nails where used as a fastening means, shall be permitted to pass through the interior of the enclosure if located within ____ of the back or ends of the enclosure.
5 mm
6.4 mm
4.3 mm
5.2 mm
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where flexible tubing is used to encase the conductors, the tubing shall extend from the last insulating support to NOT less than.
6.4 mm
4.3 mm
8.1 mm
5.2 mm
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