It is the ______ that is the harmful components of the electrical curcuitcircuit circuit
The screw size for typical lighting outlet boxes is No. 8-32. The larger number, 32, refers to the ______.
"pitch" of the thread Diameter of the screw
For both metallic and nonmetallic electric outlet boxes, the maximum gap between the box and the wall material allowed is____ in.
1/8"
How long must a hallway be to require a receptacle per the NEC? Also give code reference.
10' 210.52(H)
Four or fewer luminaire conductors, smaller than _____ AWG, and/or small equipment grounding conductors that originate in the luminaire and terminate in the box, need not be counted when calculating box fill.
14 AWG
The most current addition of the NEC is 2023, what year will the next edition of the NEC be?
2026.
How many amps is a type THHW 90°C - 4/0 aluminum conductor rated for?
205
An arc flash can produce temperatures of _____*F.
35,000
Name the four main types of electrical injuries
Burns, Falls, cut, broken bones, internal hemorrhages (кровоизлияние), Distraction of tissues
If a box is not flush with the finished surface (as a result of improper installation) or if paneling, drywall, tile, or a mirror is added, then install a box extender, sometimes referred to as a "goof _____."
ring
Each installation for a physically challenged person must be based on _____.
the specific needs of the individual who will occupy the home
What was rule #3 that I mentioned in class?
Everything must be tight.
What does article 314.4 states?
Metal boxes shall be grounded and bonded in accordance with Art 250??
For on-the-job safety, - puts the burden of responsibility on the employer and can impose large fines for noncompliance with its safety rules.
OSHA
What is installed around the box?
Putty
On an architectural plan, a circle with the letters R in it represents a a. surface or pendant exit
Recessed incandescent
A popular method of fastening wall and ceiling boxes in existing walls and ceilings is to use boxes that have plaster ears.
True
Lockout/tagout (sometimes called LOTO) is the physical restraint of all hazardous energy sources that supply power to a piece of equipment.
True
On large electrical installations, an arc flash can generate temperatures of 35,000°F (19,427°C), which is hotter than the surface on the sun.
True
The typical height for switches is 46 in., although some homeowners will want wall switches mounted 30-36 in. so as to be easy for children to reach.
True
The voltage level in a home is 120 volts between one "hot" conductor and the "neutral conductor, or grounded surface.
True
Can you use a 15-amp receptacle on a 20-amp small appliance branch circuit?
True.
One of the most far-reaching NEC rules is 110.3(B), which states that equipment shall be installed and used in accordance with any instructions included in the listing or labeling.
listed or labeled
