Drew ~30A at 240V through 12/2 Romex and measured temp until the wire reached steady temp. We're talking "what breaker size keeps our 90C rated wire below 50C when it's buried in a foot thick of spray foam insulation in a hot attic while assuming the breaker actually trips at several amps higher than the rating? "īecause I'm an engineer and like this stuff, I ran a little bit of curiosity testing once.
6 GAUGE 50 AMP WIRE SIZE CODE
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.Īlso, code ratings are determined in the most crazy conservative ways you could imagine. 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. Cross Section (mm2)Approximate Overall Diameter (mm)Current RatingSingle Phase (Amps). 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.
6 GAUGE 50 AMP WIRE SIZE INSTALL
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. That means that a 6 AWG aluminum wire can handle 40 amps of electrical current or less. Let’s talk about this in a little more detail. However in the new 2020 CEC electrical code you are permitted to use 8 AWG which is normally rated for 40 amps to be installed on a 50 amp breaker with some terms and conditions. 80 NEC rule states that you can only load the wire up to 80 of the rated ampacity. As a whole the wire size for a 50 amp breaker is 6 awg. When doing regular electrical repairs, double-. Example: A 6 AWG aluminum wire has a rated ampacity of 50A. No personal attacks on anyone at any timeīe polite and respectful in your exchanges. For 50-Amps over a distance of 150 feet, wire size for copper should be of 6 AWG, and for aluminum it is 4 AWG. After a period of inactivity, this subreddit is under construction and will be available to the public shortly.
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