Conductor Sizing
- Thread starter wmeek
- Start date
- Status
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Yes if all equipment is listed for 75C or better.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I did not check how many #8 you can fit in 3/4" conduit
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Make sure that the inlet is rated for 75 degrees C. Some of the ones that are available are only rated for 60 degrees C. I use the ones that have pigtails on the inlet device to avoid the issue.
So I checked the GE 50A Inlet box and its only rated for 60Deg conductors so i will use #6 for the Hots and neutral and a #10 for the ground. So 3-#6 at .0507 = .1521 + .0211 =.1732 which will still fit in a 3/4" Emt.
Thanks for reminding me of the rating of inlet box
Thanks for reminding me of the rating of inlet box
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
That is why I stated if all the equipment was rated 75C. Good thing Trevor had experience with that particular device...
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
The 50 amp Generac inlet I installed several years ago had only 60° C terminals. I had run #8 MC cable that was left over from a job and ended up having to install a junction box adjacent to the inlet to pigtail off the inlet with #6's. Basically this was a marine inlet in an enclosure for a generator connection. Now I only use the ones with the pigtails.
Funny how quickly a simple 27d F difference can ruin a perfectly professional install.
JAP>
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