In that case you can keep the volage drop < 2% using #8 for over 75' The actual load that would be on a 50a breaker is most likely to be 40a or less. The NEC 2011, 2014, 2017, 2020 & 2023 all allow #8 copper wire for 50a.Ĩga copper wire can carry the full load of 50a (which is typically 125% higher than you can use with 50a breaker) for 60' with < 2% voltage drop. The NEC 2008 was the last code book that requires #6 for 50a. (If the wire was less than 75' away it would have meet commercial energy code standards requiring less than 2% voltage drop.) Just posting this so the guys that had Electrican's come out & change #8 wire to #6 for a circuit being fed from a 50a breaker know that unless the wire was over 100' that Electrican was probably going above an beoynd to make them happy. The wire is not in a conduit at any point.Įdit: I had another look at the wire and I was mistaken, it is 8awg NM-B, not 8awg THHN.Įdit 2: Thanks so much folks! To answer some folks' questions, we live in the US, so based on everyone's very helpful comments, we are definitely getting the original electrician to switch out the wire with 6/3 NM-B. I contacted the electrician and they are willing to comeback and replace to the 8 gauge wire with 6 gauge wire, but they also suggested that I was overreacting and the circuit was safe as installed (though did not provide any explanation as to why).Īm I wrong? If it matters, the wire travels from the panel ~15 feet through the joists of our unfinished basement, through the floor and then immediately terminates at the receptacle. My understanding is that 6 gauge is standard for a 50amp circuit. After they left, I noticed that they had used 8 AWG THHN wire for the project. I had an electrician install a new circuit (50amps) for an induction range last week. Suggesting the burning scrap wire to remove the insulation will result in a ban. Do not post encouraging or mocking suicide, mental illness, or drug use.Ħ. No illegal, unethical, or disturbing subject matter. Example: Blogs, articles, news sites, YouTube channels, items for sale, ect.ĥ. No incorrect, unsafe, or hazardous informationīlatant incorrect information or hazardous advice will result with a ban Adhere to the Reddiquette.ĭO NOT post any personal information of any kind. Civil disagreements can happen, but insults should not. No personal attacks on anyone at any timeīe polite and respectful in your exchanges. After a period of inactivity, this subreddit is under construction and will be available to the public shortly.
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