What Size Wire Do You Need for 30 Amps at 200 Feet?

If you’re wondering what size wire you need for 30 amps at 200 feet, you’ve come to the right place. In this blog post, we’ll go over the wire size requirements for 30 amp circuits at various lengths, so you can make sure your electrical system is up to code.

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If you are running an electrical circuit at 30 amps and 200 feet, you need to use a wire that is rated for at least 30 amps and 200 feet. The size of the wire will depend on the type of wire you are using and the voltage of the circuit.

What Size Wire Do You Need for 30 Amps at 200 Feet?

When it comes to electrical projects, one of the most important things to consider is the size of the wire. This is because the wrong size wire can cause a fire. So, what size wire do you need for 30 amps at 200 feet?

What is the Maximum Capacity of the Wire?

The maximum capacity of the wire is determined by the cross sectional area of the conductor. The American wire gauge (AWG) system outlines the diameter of non-ferrous, e.g. copper and aluminum, electrical cables. Based on this information, common diameters for 30-amp electrical service include 10-, 8-, 6- and 4-gauge wire. The smaller the gauge number, the larger the diameter and current-carrying capacity of the wire.

What is the Minimum Size of the Wire?

The National Electrical Code (NEC) requires that you use a copper conductor that is at least 4 AWG for this application. This is for copper wire only.


Based on the information above, you will need to use 8 AWG (American Wire Gauge) copper wire for your application. This wire size has an amperage capacity of 30 amps and a length rating of 200 feet.