electricalperson
Senior Member
- Location
- massachusetts
we have some 2/4 SER cable thats marked XHHW insulation on the outer covering. is this used as a 60 degree cable or 75?
SER ampacity
- Thread starter electricalperson
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TOOL_5150
Senior Member
- Location
- bay area, ca
TOOL_5150
Senior Member
- Location
- bay area, ca
But he is not using a single conductor..
~Matt
I don't use single conductors when I install NM, either.
izak
Senior Member
- Location
- Springfield, MO
yeah, well.... i build services all the time with #12 lamp cord
some bone head on this site tried to tell me it wouldnt work, but ive been useing lamp cord for years.
if you need more amps, just add another peice of cord, or (three or ten) twist the ends together, and PRESTO!
you have one larger wire,
if any of you have a problem with this post, then you probably have ALOT better reason to be on this website than I do.
all in good fun
(or whatever i call it)
some bone head on this site tried to tell me it wouldnt work, but ive been useing lamp cord for years.
if you need more amps, just add another peice of cord, or (three or ten) twist the ends together, and PRESTO!
you have one larger wire,
if any of you have a problem with this post, then you probably have ALOT better reason to be on this website than I do.
all in good fun
(or whatever i call it)
TOOL_5150
Senior Member
- Location
- bay area, ca
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
If used as a feeder SER must be rated 60C in the 2008 if it is installed indoors. If you are using the 2005 or earlier code than 75C is what you use.
That's my point.... NM is not a single conductor, but the conductors withing at least have some construction specs.
Unfortunately, In TN it now depends on what area you are doing the install. Some areas are on '05, thus 75?, some on '08, thus 60?, and even in the '08 areas some inspectors are enforcing it one way, some another.
electricalperson
Senior Member
- Location
- massachusetts
thank you guys. im using the 2008 code cycle. i didnt have my code book handy i left it in the van.
-2
-2
Check to see if the conductors are -2 type that allows 90C rate for both WET or Dry.
-2
Check to see if the conductors are -2 type that allows 90C rate for both WET or Dry.
- Location
- Massachusetts
There are almost no instances where we can use the 90 C rating of SE regardless of it being XHHW-2 or not.
With the changes in the 2008 NEC SE used as indoor feeder or branch circuit conductors is limited to the 60 C rating.
Used as service entrance conductors we are limited to 75 C rating due to the rating of the devices it will connect to.
SE vs. XHHW-2
SE vs. XHHW-2
Thanks Bob, I was using an earlier Southwire cutsheet based on SE cable 90C ambient operating base wet or dry (above ground) and not the conductor allowed ampacity 75C rate for XHHW-2 conductors in the SE cable.
SE vs. XHHW-2
Thanks Bob, I was using an earlier Southwire cutsheet based on SE cable 90C ambient operating base wet or dry (above ground) and not the conductor allowed ampacity 75C rate for XHHW-2 conductors in the SE cable.
eljefetaco
Member
- Location
- Fanwood, NJ
you keep referencing nm does the 60 degree also apply to rx when ampacity is involved?
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Yes read 334.80
electricalperson
Senior Member
- Location
- massachusetts
you guys are great
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Flattery'll get you everywhere. :grin:
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