
At 75 degrees C, 3/0 Al is 155 amps and 4/0 Al is good for 180 amps so 4/0 Al with 3/0 AL neutral would be my guess.

#200 AMP SERVICE WIRE DIAMETER FULL#
These are the safest wire sizes because they will allow you to use the full amperage of your electrical service without too high of a voltage drop. Specifications Standards & References Construction Resources Application Southwire Type SE, Style SER service entrance cable is primarily used to convey power from the service drop to the meter base and from the meter base to the distribution panelboard however, it may be used in all applications where Type SE cable is permitted. I won't stake my life on this so it's a comment.

Note: View additional wire size charts from the list below. To safely use a 200 amp electrical service, you will need to use 4/0 Aluminum or 2/0 Copper. Wire Size Chart and Maximum Amp Ratings Source: NFPA 70, National Electrical Code, Table 310.15(B)(16) SIZE The wire size chart below shows allowable ampacities of insulated conductors rated up to and includingĢ000 Volts, 60☌ through 90☌ (140☏ through 194☏), not more than three current-carryingĬonductors in raceway, cable, or earth (directly buried), based on ambient air temperature of 30☌ (86☏). Checking Table 310.16 again, that means you need at least to use 300 MCM copper or 400 MCM aluminum. We got it with the following equation: 200 x 160 320A. It is important to pick the correct size of wire so that the wire doesn't overheat. Each wire size, or wire gauge (AWG), has a maximum current limit that a wire can handle before damage occurs. The number of devices connected to the circuit usually determines how much current will flow through the wire. For 200 amp panel that’s 300 ft from the main service, you’ll need to adjust the wire size for 266 amps (with the 83 standard considered). Online Calculators and Tables to Help You Determine Proper Wire Size Electrical current is measured in amps. Your local electric utility will be able to tell you what size wire you need based on a visual inspection. Six-strand 18 or 20 gauge galvanized steel guy wire is recommended for.

If you are installing a 200 amp service underground, you’ll need a wire size of 2/0 copper or 4/0 aluminum. If all three wires are connected to the electrical service masts that runs. Limit that a wire can handle before damage occurs. AWG, or American Wire Gauge, is the standard used to gauge electrical wires in the United States. The wire size you need is going to be given in electrical codes, selected by your installing electrical contractor, based on BOTH the Ampacity (say 100A) and the total wire length - where your length of 150 ft. Each wire size, or wire gauge (AWG), has a maximum current
