Service Entrance Cable
- Thread starter trip
- Start date
- Status
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
Re: Service Entrance Cable
See Article 338 Service Entrance Cable, section 338.10 Uses Permitted. (A)....and (B)(4).
See Article 338 Service Entrance Cable, section 338.10 Uses Permitted. (A)....and (B)(4).
charlie
Senior Member
- Location
- Indianapolis
Re: Service Entrance Cable
USE cable is only permitted for use outside a building. It is not even listed for going into service equipment that is on the inside of an outside wall. The reason is that USE has not passed the vertical flame test. Most USE has a dual (or more) listing of USE/XHHW and is permitted to be used inside for building wiring as XHHW wire or cable.
the -2 that follows the type letters indicates that the cable is rated for 90 degrees C in wet or dry locations. Therefore, RHW-2 is good for 90 degrees C even though it only has a single H in the type designation.
Keep in mind that the 90 degree C is for derating only since there are no terminations that are listed for use at 90 degrees C in equipment.
USE cable is only permitted for use outside a building. It is not even listed for going into service equipment that is on the inside of an outside wall. The reason is that USE has not passed the vertical flame test. Most USE has a dual (or more) listing of USE/XHHW and is permitted to be used inside for building wiring as XHHW wire or cable.
the -2 that follows the type letters indicates that the cable is rated for 90 degrees C in wet or dry locations. Therefore, RHW-2 is good for 90 degrees C even though it only has a single H in the type designation.
Keep in mind that the 90 degree C is for derating only since there are no terminations that are listed for use at 90 degrees C in equipment.
pierre
Senior Member
- Location
- Westchester County, New York
Re: Service Entrance Cable
Hello Charlie
Your first paragraph has confused me. Would you mind providing a little more detail so I could possibly understand what you mean?
Thanks
Pierre
Hello Charlie
Your first paragraph has confused me. Would you mind providing a little more detail so I could possibly understand what you mean?
Thanks
Pierre
Re: Service Entrance Cable
Charlie,
According to 338.10(B)(4)(b),"Type USE shall be permitted to be terminated in enclosures at an indoor location where Type USE cable emerges from the ground. The length of the cable extending indoors to the first termination shall not exceed 6 ft."
Can you clarify your statement. Thanks
Charlie,
According to 338.10(B)(4)(b),"Type USE shall be permitted to be terminated in enclosures at an indoor location where Type USE cable emerges from the ground. The length of the cable extending indoors to the first termination shall not exceed 6 ft."
Can you clarify your statement. Thanks
- Location
- Massachusetts
Re: Service Entrance Cable
Joek
I do not see the part you have quoted, are you sure of the numbers?
Joek
I do not see the part you have quoted, are you sure of the numbers?
Re: Service Entrance Cable
Bob, read the second paragraph under 338.10(B)(4)(b). "Type USE cable shall be installed outside in accordance with the provisions of Article 340. Type USE shall be permitted to be terminated in enclosures at an indoor location where Type USE cable emerges from the ground. The length of the cable extending indoors to the first termination box shall not exceed 1.8m (6 ft.)."
Bob, read the second paragraph under 338.10(B)(4)(b). "Type USE cable shall be installed outside in accordance with the provisions of Article 340. Type USE shall be permitted to be terminated in enclosures at an indoor location where Type USE cable emerges from the ground. The length of the cable extending indoors to the first termination box shall not exceed 1.8m (6 ft.)."
- Location
- Massachusetts
Re: Service Entrance Cable
Amptech what I posted is a cut and paste job right from the NEC on CD-ROM.
It looks like we have a discrepancy, where are you getting your quote from?
I think my book is at the job but I will take a look here for it.
Amptech what I posted is a cut and paste job right from the NEC on CD-ROM.
It looks like we have a discrepancy, where are you getting your quote from?
I think my book is at the job but I will take a look here for it.
- Location
- Massachusetts
Re: Service Entrance Cable
Amptech you got me checking and my code book has the wording that both you and joek posted, my CD-ROM does not have that wording.
I went to the NFPA website and checked the Errata Sheet for this code.
I found that my CD-ROM is correct and my Book is incorrect.
[ February 22, 2004, 08:11 PM: Message edited by: iwire ]
Amptech you got me checking and my code book has the wording that both you and joek posted, my CD-ROM does not have that wording.
I went to the NFPA website and checked the Errata Sheet for this code.
I found that my CD-ROM is correct and my Book is incorrect.
You can get the errata here
[ February 22, 2004, 08:11 PM: Message edited by: iwire ]
charlie
Senior Member
- Location
- Indianapolis
Re: Service Entrance Cable
"Errata
338.10(B)(4)(b): Revise second paragraph to read:
"Type USE cable shall be installed outside in accordance with the provisions of Article 340. Where Type USE cable emerges from the ground at terminations, it shall be protected in accordance with 300.5(D). Multiconductor service entrance cable shall be permitted to be installed as messenger-supported wiring in accordance with Articles 225 and 396."
This errata has deleted the sentence
"The length of the cable extending indoors to the first termination box shall not exceed 1.8m(6 ft)."
My answer stands, sorry I took so long to get back. I have not done my research but I will guess that the NFPA put a change into the Code that the Code Making Panel had approved in the proposal stage and then rejected during the comment stage because of objections to this material being inside a building. A mistake was made by staff when it was not removed.
"Errata
338.10(B)(4)(b): Revise second paragraph to read:
"Type USE cable shall be installed outside in accordance with the provisions of Article 340. Where Type USE cable emerges from the ground at terminations, it shall be protected in accordance with 300.5(D). Multiconductor service entrance cable shall be permitted to be installed as messenger-supported wiring in accordance with Articles 225 and 396."
This errata has deleted the sentence
"The length of the cable extending indoors to the first termination box shall not exceed 1.8m(6 ft)."
My answer stands, sorry I took so long to get back. I have not done my research but I will guess that the NFPA put a change into the Code that the Code Making Panel had approved in the proposal stage and then rejected during the comment stage because of objections to this material being inside a building. A mistake was made by staff when it was not removed.
- Status