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. 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?.
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