Today, I will make a Review for Course WR-2: Inspect Conduits, Junction and Pull Boxes as follows.
You can review the following articles in the same course for more information:
Review for Course WR-2
1- What is the maximum distance between conduit supports and a junction box, if structure members do not allow for a distance of 3 feet?
2- Rigid metal conduit that is plastic-coated is covered with a seamless coating of …………………………..
3- What type of conduit provides great flexibility, strength and requires no elbow fittings?
4- What is the primary difference between rigid metal and EMT conduit?
5- What is the maximum number of quarter bends allowed between pull points?
6- What is the purpose of a bushing?
7- What information must be clearly marked on every 10-foot section of rigid metal conduit?
8- What conduit fitting is used to connect two pieces of conduit that cannot be physically turned?
9- What percent conductor fill is allowed for a length of conduit 26 inches long?
10- When a piece of conduit is installed that has a smaller diameter than the knock-out of the utility box, what kind of conduit fitting would be used to make the proper connection?
11- Short pieces of conduit threaded on both ends and made in 45- and 90-degree angles are known as ……………………………...
12- Conduit bodies are also known as …………………………
- Fixture boxes
- Condulets
- Masonry boxes
- Handy boxes
13- Conduit straps should be placed within what distance of pull boxes?
- 10 feet
- 4 feet
- 3 feet
- 5 feet
14- A conduit containing eighteen conductors is allowed to be filled to what percentage?
15- A box that provides a means of pulling conductors long distances without placing excessive stress on the conductors or insulation is called a …………………………..
- Handy box
- Condulet
- Fixture box
- Junction box
16- Are splices allowed in conduit bodies? If so, under what conditions?
17- Condulets are used in place of ………………………. when installing rigid conduit.
18- A junction box is required for two 4-inch conduits and two 2-inch conduits. What length is required for this straight pull installation?
What would be the recommended width of this box?
19- 350 kcmil conductors in a 3-inch electrical metallic tubing enter the back of a junction box opposite a removable cover and bend down to leave the bottom of the box. What is the minimum permitted depth of this junction box?
20- Can a listed junction box be located underground?
21- What is the minimum diagonal length for a 4-inch conduit that enters the JB at the bottom and exits out the right side?
22- What is the maximum trade size of EMT?
Answers
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END OF COURSE
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