Chapter 14: Caps and Receptacles

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1
What is the purpose of NEMA ratings for electrical caps and receptacles?
To set the configuration standards for caps and receptacles according to amperage, voltage and phase
2
Caps and Receptacles should be used with what types of equipment?
Portable
3
One the NEMA chart, what do the numbers with the "R" after the number represent?
Receptacle
4
What do the numbers eith the "P" represent?
Cord caps or "plugs"
5
Why is it important that you know the answer to questions 3 & 4?
Configurations for receptacles and caps are exact opposites so they mate together. If you match them incorrectly you will end up with the wrong part
6
The NEMA chart is broken into what two general classifications?
Straight blade and twist lock
7
If you are installing a 120/230 volt coffee maker, how many prongs must the cap and receptacle have to meet code?
4 (2 hots, 1 neutral and one ground)
8
If you are installing a 230 volt three phase fryer, how many prongs must the cap and receptacle have to meet code?
4 (3 hots and 1 ground)
9
After years of service, what will happen to the spring tension fingers in the receptacle?
They loosen up and begin to overheat connections and cord caps
10
If a receptacle burns up, what else should you replace?
The cord cap
11
If a cord cap is burned up, what else should you carefully check and usually replace?
the receptacle
12
What is the real danger when using receptacles with loose spring tension fingers?
The wiring burning back into the conduit
13
Which prong isw always the ground prong?
The round or odd prong
14
On a standard 120 volt receptacle, which line must always be connected to the brass screw?
Hot line
15
Which line should always be connected to the silver screw on a 120 volt outlet?
Neutral
16
A receptacle with spaces to plug in two cord caps is referred to as what kind of receptacle?
Duplex recetacle
17
What is a cord connector body?
A female connector that fastens to the end of a cord
18
What is meant by the term "dead front contruction" when talking about cord caps?
All wiring connections hidden behind an insulated body
19
What trips a GFI outlet?
A leakage cuuent exceeding 5 ma
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