Originally Posted By: Joey D’Adamo This post was automatically imported from our archived forum.
The pigtails are fine but there needs to be a floating (separate) neutral bar. In this case, it is shared with the ground which is a problem if this is a sub panel.
Actually [subsequent edit]... Assuming both ends are Al, those nuts better be rated for Al-to-Al. Hopefully the wire on the other end is not copper because if that is Cu-to-Al there IS a really big problem.
Originally Posted By: jkline This post was automatically imported from our archived forum.
Greg - I always enjoy reading your posts, and I’ve learned a lot from you, Jeff, Bob Badger and others on this forum. Would you share a little more of your knowledge and explain how there can be no neutral load?
Originally Posted By: Greg Fretwell This post was automatically imported from our archived forum.
If the only load is 240v like most cooktops or A/C condensers there are no 120v loads so you don’t need a neutral. If you had a sub panel that only served 240v loads you don’t have to have a neutral bus in it.
Back in the olden days we didn’t even bring a neutral to the equipment panels in a computer room. The standard was that nothing had a line to neutral load. Everything was 208-240v. There were 120v outlets but they didn’t serve the system. Most big boxes had 120v “convenience outlets” in them but they were derived from internal transformers without a grounded conductor.