Nonmetallic box question
- Thread starter svthard
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bphgravity
Senior Member
- Location
- Florida
Pick out the key words in the question - Boxes and nonmetallic.
Go to the index and look up boxes, and then scroll down until you get to the sub-heading of non-metallic.
You only have 4 sections to look at for the correct answer.
This is how you learn to use the NEC and how you answer exam questions...
Go to the index and look up boxes, and then scroll down until you get to the sub-heading of non-metallic.
You only have 4 sections to look at for the correct answer.
This is how you learn to use the NEC and how you answer exam questions...
1793
Senior Member
- Location
- Louisville, Kentucky
- Occupation
- Inspector
bphgravity said:
Great answer. I like it.
LawnGuyLandSparky
Senior Member
I tried to answer, but when I hit the "enter" key a bolt of lightning came off my screen and fried my privates.
Tough crowd!
Tough crowd!
svthard
Member
Would like more input
Would like more input
I know how to find the answer and have a code section to look at and I also have the answer listed in the instructor information, problem is I don't necessarily agree with the listed instructor answer and was wondering how others would answer this question without giving the instructors answer.
Would like more input
I know how to find the answer and have a code section to look at and I also have the answer listed in the instructor information, problem is I don't necessarily agree with the listed instructor answer and was wondering how others would answer this question without giving the instructors answer.
wbalsam1
Senior Member
- Location
- Upper Jay, NY
svthard said:
I'm wondering something... is FNMC a type of nonmetallic raceway? if so, A & C are the same answer....is liquidtight nonmetallic conduit a type of nonmetallic raceway? is so, then A & B & C are all the same answers which leaves answer D as the only logical answer for a (IMO) poorly worded exam question. :grin:
svthard
Member
OK here is my opinion
OK here is my opinion
Ok! here is the textbook answer (C).
I don't agree with this answer looking at 314.3 in the 2002 code book ( which is what Virginia is using to test on) it says
"314.3 Nonmetallic Boxes.
Nonmetallic boxes shall be permitted only with open wiring on insulators, concealed knob-and-tube wiring, cabled wiring methods with entirely nonmetallic sheaths, flexible cords, and nonmetallic raceways."
Article 100 definition of a raceway
Raceway. An enclosed channel of metal or nonmetallic materials designed expressly for holding wires, cables, or busbars, with additional functions as permitted in this Code. Raceways include, but are not limited to, rigid metal conduit, rigid nonmetallic conduit, intermediate metal conduit, liquidtight flexible conduit, flexible metallic tubing, flexible metal conduit, electrical nonmetallic tubing, electrical metallic tubing, underfloor raceways, cellular concrete floor raceways, cellular metal floor raceways, surface raceways, wireways, and busways.
doesn't this definition of a raceway include all of the possible answers listed?
So, I think the answer is (D)
OK here is my opinion
Ok! here is the textbook answer (C).
I don't agree with this answer looking at 314.3 in the 2002 code book ( which is what Virginia is using to test on) it says
"314.3 Nonmetallic Boxes.
Nonmetallic boxes shall be permitted only with open wiring on insulators, concealed knob-and-tube wiring, cabled wiring methods with entirely nonmetallic sheaths, flexible cords, and nonmetallic raceways."
Article 100 definition of a raceway
Raceway. An enclosed channel of metal or nonmetallic materials designed expressly for holding wires, cables, or busbars, with additional functions as permitted in this Code. Raceways include, but are not limited to, rigid metal conduit, rigid nonmetallic conduit, intermediate metal conduit, liquidtight flexible conduit, flexible metallic tubing, flexible metal conduit, electrical nonmetallic tubing, electrical metallic tubing, underfloor raceways, cellular concrete floor raceways, cellular metal floor raceways, surface raceways, wireways, and busways.
doesn't this definition of a raceway include all of the possible answers listed?
So, I think the answer is (D)
LawnGuyLandSparky
Senior Member
It's possible the textbook answer key has a typo.
svthard
Member
Don't know
Don't know
Not sure what the difference is looks the same to me. sometimes when i'm looking at these questions and answers and i just don't see it the same way. i always try to let someone else look at it to see if i'm missing a subtle reference. I guess sometimes the author of these questions doesn't get his point across with the wording or could just be a typo.
Thanks to all that responeded
Don't know
Not sure what the difference is looks the same to me. sometimes when i'm looking at these questions and answers and i just don't see it the same way. i always try to let someone else look at it to see if i'm missing a subtle reference. I guess sometimes the author of these questions doesn't get his point across with the wording or could just be a typo.
Thanks to all that responeded
jwelectric
Senior Member
- Location
- North Carolina
The only correct answer is ?C?.
It is the only answer that has the same wording as the NEC and the only one that will be accepted on an exam.
The intent of the exam is to see if you can find the answer not to see if the answer can be debated.
Nonmetalic boxes are permitted for use with ______?
a.Flexible nonmetalic conduit c. nonmetalic cables and raceways
b.liquidtight nonmetalic conduit d.all of these
"314.3 Nonmetallic Boxes.
Nonmetallic boxes shall be permitted only with open wiring on insulators, concealed knob-and-tube wiring, cabled wiring methods with entirely nonmetallic sheaths, flexible cords, and nonmetallic raceways."
It is the only answer that has the same wording as the NEC and the only one that will be accepted on an exam.
The intent of the exam is to see if you can find the answer not to see if the answer can be debated.
Nonmetalic boxes are permitted for use with ______?
a.Flexible nonmetalic conduit c. nonmetalic cables and raceways
b.liquidtight nonmetalic conduit d.all of these
"314.3 Nonmetallic Boxes.
Nonmetallic boxes shall be permitted only with open wiring on insulators, concealed knob-and-tube wiring, cabled wiring methods with entirely nonmetallic sheaths, flexible cords, and nonmetallic raceways."
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
IMO, if "C" is the only answer than I believe this is a very poor question. I can see how "A" & "B" would be correct but only partial answers but "D" & "C" covers them all.
This question is not testing the ability of the electrician but rather is using a logic that is unnecessary and misleading. How many intelligent electricians would have answered it with "D". Does this mean they should lose a point?????
It's not a matter of debate because "C" is a correct answer but so is "D". Can anyone show me how "D" is incorrect. I don't think so. The fact that the NEC wording is exactly like "C" is , IMO, not a justification to mark someone wrong when they obviously know what they are doing.
A good question should not have to be debate. The fact that it can be debated just tells me it is a bad question.
This question is not testing the ability of the electrician but rather is using a logic that is unnecessary and misleading. How many intelligent electricians would have answered it with "D". Does this mean they should lose a point?????
It's not a matter of debate because "C" is a correct answer but so is "D". Can anyone show me how "D" is incorrect. I don't think so. The fact that the NEC wording is exactly like "C" is , IMO, not a justification to mark someone wrong when they obviously know what they are doing.
A good question should not have to be debate. The fact that it can be debated just tells me it is a bad question.
wbalsam1
Senior Member
- Location
- Upper Jay, NY
celtic said:
Would a d and c cost more than an a and b? The answer's in article 517.:grin:
Charles R. Miller
Member
Celtic,celtic said:
You are very knowledgeable when it comes to the NEC . . . you have a great sense of humor . . . you have a tremendous impact on this forum . . . your feedback here is of great importance . . . but when it comes to transposing algebraic equations, you need help. When moving a positive number to the opposite side of the ?equal? sign, it becomes a negative number. Thus:
If D = A+B+C, then C = D-A-B
Other than trying to use algebra to solve this question, you are correct by saying ?D? is the correct answer.
The first thing wrong with this question, is the spelling of nonmetallic, ?nonmetalic?.
The argument stating ?C? is the correct answer because it is the same wording as in the NEC is not true. It is not exactly the same. Although the wording in this question is close to the wording in 550.15(A), it is still not the same. Of the answers, I could argue that ?C? is the most incorrect. The word ?nonmetallic? is only in front of cables. When we read the answer, we assume nonmetallic applies to both cables and raceways, but it may not. Because it is not specifically stated, we could read the answer as ?nonmetallic cables and all types of raceways.? To be technically correct, the answer should read ?nonmetallic cables and nonmetallic raceways.?
Many times on exams we have to choose the most correct answer. The most correct answer to this question is ?D?. There may be a typo in the answer key or in the answers of the question.
Did this question come from a certification (journeyman or master) exam, or did it come from an apprenticeship class?
Charles
In my defense...all I can say is my "algebraic equation" (right or wrong) was added to spur even MORE comments on this matter.
I was/am not willing to accept that "C" is correct because it "has the same wording as the NEC".
I was/am also not willing to accept that "D" is the correct answer ~ although this is the answer I am gravitating to.
What I am willing to accept is that this is a possible typo ...but without further input from the OP (such as title/author of book for a correction sheet)...how would we know if this is in fact a typo?
I was/am not willing to accept that "C" is correct because it "has the same wording as the NEC".
I was/am also not willing to accept that "D" is the correct answer ~ although this is the answer I am gravitating to.
What I am willing to accept is that this is a possible typo ...but without further input from the OP (such as title/author of book for a correction sheet)...how would we know if this is in fact a typo?
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