acsr

[hiram]

Looking for amperage rating for triplex can someone direct me in the right direction. Thanks.

 

[wbalsam1]

Re: acsr

Hi: without more info, a shot from the hip would suggest Table 310-20 in the '99 code.

 

[redfish]

Re: acsr

hiram
Member # 6376 posted August 15, 2005 06:25 PM
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Looking for amperage rating for triplex can someone direct me in the right direction. Thanks.

What size conductors, copper or aluminum?

 

[charlie]

Re: acsr

Hiram, the triplex you are discussing is not a listed product and is not covered by the NEC. If you use it, go to the manufacturer to find out the ampacity. ACSR stands for aluminum conductor - steel reinforced but it is only the neutral/messenger that is ACSR, the other conductors are probably AAAC PE.

Article 396 covers this type of cable and the following is from the 2005 Edition of the NFPA NEC Handbook.

Some of the triplex and quadruplex cable used by utilities as service-drop cable does not use conductors recognized in Table 310.13 and does not meet the requirements of Article 310. Such triplex and quadruplex cable would, therefore, be acceptable only where approved by the authority having jurisdiction.

See 310.15(B) and Table 310.20 for two or three single-insulated conductors supported on a messenger. See 310.15(C) and Annex B, Table B.310.3, for ampacities of conductors for other cable types.