#What size copper wire for 100 amps upgrade

Just for info, the breakers are all 15 amp, except for the one on the bottom left, which is a 20 amp GFCI breaker, although that doesn't appear to be connected on the other end, so might get removed in the new panel.Īlso, I will most likely upgrade all of the 15 amp breakers to AFCIs, considering they're all associated with bedrooms (yeah I know that's a lot of outlets and lights :D). I know it can be a bit confusing, but the main takeaway for aluminum wire size is generally to go a size up (meaning a lower number on the gauge) compared to copper. This is because aluminum conducts electricity slightly differently than copper. Seems hard to find that kind of wire, though. For a 100 amp service, many electricians opt for wire size 2 or 1 AWG aluminum or copper-clad wiring. So when I get the new panel (), does that mean I'll have to wire a ground wire from the main panel? If so, what AWG? Since this is 70 amp, I'm assuming 4 AWG. It appears that the neutral (the bus on the left) and ground (the bus on the right) bus are connected. The wire size is unknown, and the one-way distance (from source to load) is 50 m. Both are perfectly fine to use in these panels. Types Of Wire Used in 100 Amp Service Wires Used in 100 Amp service are different depending on whether it is copper or aluminum wire. One of the things I have noticed first of all is that there is no ground wire. Suppose an electrical system with a 120 V source and allowable drop of 3, a copper cable with a maximum temperature of 50C, operating at 200 amps at DC. In general, a 100 AMP service is very common, and you can find a 100 amps sub panel everywhere. I decided to take a look at the sub-panel (since I was considering updating it to a newer one), which is running off of a 240 volt 70 amp breaker on the main panel and appears to be a Siemens ITE from around the 80s or early 90s, and this is what I found inside (sorry for it being blurry): The other day, I was thinking of a few electrical 'improvements' to my home.

What size copper wire for 100 amps