![]() ![]() If the wire is good for 25, and the unit says 24, what about some de-rating? If the #12 wire is on a 30amp breaker, and the a-c only pulls 24 great, but what about when the a-c gets old and takes a little longer to start or bearings or something is going out and now its amp draw is at 30, long enough unitl hopefully the breaker trips before wire melts? I have personally never seen a #12 on 60 amp breaker in 10 years as a comm/ind. ![]() Not to get into a big “thing” with everyone as I do value all your opinions, but I am not sure I agree with some of the breaker size discussion. (You are unlikely to see this in a dwelling)īottom line before you say that 12s on a 30 are a violation, wrong or unsafe you have to know what they are feeding. It is possible to have 12 AWG connected to a 60 amp breaker and still be code compliant. There are times when feeding motor loads that the breakers are rated much higher than the conductors. Table 310.16 tells us 12 AWG is rated 25 ampsīingo 30 amp breaker with 12 AWG conductor, you could use 10 AWG but the NEC would not require it. Lets say name plate on this unit says the following. Let's stick with Jerry's example of a AC unit. Rolland I know you say that because you think it would be the right thing to do. Professional Electrician !(upload://t2zemjDOQRADd4xSC3xOot86t0m.gif) Even the clerks at at the home improvement stores know how to size breakers to wire. I think your buddy should change the breaker to match the wire size or change the wire. This post was automatically imported from our archived forum. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |