mikesimpson5
Member
- Location
- Atlantic County, NJ USA
Is it code to protect #2 SER AL at 90 A from a generator to a transfer switch? Is the generator breaker rated 75C? Are the terminals in the transfer switch rated 75C?
All of this is confusing to this old timer. If termination point is listed for @ 75 & over-current device is 100 or more, using SE cable in insulation, you have to use the 60 degree column? I had asked a similar question before, & now an more confused???????? :? :?
The 60 degree collum for cable is only for the 2008 code. Wording was left out of the exception for 2008. 2005 and 20011 have the correct wording for the 75 degree collum. It messed with this old timmers head also. Especilly since we are not yet on the 2011 here in Fl.
I am not following this discussion clearly... I don't see where in the 2005 code that SE is restricted to 60 degree??? Help??? Also on the topic, I know that you cannot sleeve SE in a raceway outdoors due to it being a wet location, but I cannot recall where to find this????
It was a change for the 08 cycle. Now for the 11 it changes some. You can use the 75deg column as long as the SE is not in contact with insulation. But if it is in contact you must go back to the 60 deg.Wondering if the wording was left out on purpose or by accident. Was it code change for 2008 now it is being changed again for 2011?
I agree with Gus the generator mfg. require copper conductors so Alum. is out. Also depending on the size of the generator, say a 20Kw it will have a 100 amp breaker on it. You must size the wire to the OCD. #3 CuMost likely both terminations are 75?, however, you may encounter two problems. One, almost all the generators I've inspected have a notation for copper conductor terminations only, secondly, depending on which Code cycle is being enforced, SE cables are restricted to their 60? rating. (See 338.10 in your applicable Code)i