In this case, it needs to be 4/0 AWG wire or cable rated for 200 amps or less. Next, you’ll need wire and cable rated for your desired size of circuit. First, you’ll need a 200 amp electrical panel. There are a few things you need in order to have a 200 amp service. This is due to using the maximum 75 degree column in the electrical code. In this case it is permitted to be used on a 200 amp service. The demand load calculation must be completed to prove to the local inspection authority that the 4/0 conductor size does not exceed 185 amps of draw. What Size Aluminum Wire For 200 Amp Service? How many amps can 4/0 aluminum wire carry?Ĥ/0 aluminum wire can carry a maximum of 185 amps, as per code. Next, how many circuits are on the service? Finally, what kind of loads (appliances) will be on those circuits? The more information we know about your service before we can give you a definite answer to that question. If you’re looking for an easy answer to the question, “How many wires do I need for a 200 amp service?” Surprise! But there’s a lot of information we need before we can give you an exact number.įor starters, how long is your service run and what type of wire? It sounds like you’ll be using 4/0 AWG aluminum conductor wire to complete this service, which is good because it’s rated for the maximum load at 185 amps. For a 3 phase installation it would be 4 wires. Generally for a single phase installation it would be 3 wires. How many wires do I need for a 200 amp service? What size aluminum wire for 200 amp service? However, with changes in building codes and technology over the past decade, some electricians are starting to favor 250 awg aluminum wires for 200 amp service entrances. While 4/0 is rated for a maximum of 185 amps, it’s still used due to its ease of installation.įor years, 4/0 aluminum wire was the standard conductor size for an electric service entrance.
200 amp service wire diameter code#
Recently, code has stated that the size of aluminum wire for a 200 amp service entrance must be 250 awg unless a demand load calculation can be completed to prove to the local inspection authority that the 4/0 conductor size does not exceed 185 amps of draw. What Size Aluminum Wire For 200 Amp Service Why do the electrical codes keep changing.What size wire goes from meter to panel?.Can you use aluminum wire service entrance?.What size aluminum wire is good for 400 amps?.How many breakers can be in a 200 amp panel?.Can you run a 200 amp sub panel off 200 amp main?.
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