Shop our selection of 3/0, THHN, Building Wires in the Electrical Department at The Home Depot.
American wire gauge size calculator and chart. Wire gauge calculations Wire diameter calculations. The n gauge wire diameter d n in inches (in) is equal to 0.005in times 92 raised to the power of 36 minus gauge number n, divided by 39:. d n (in) = 0.005 in × 92 (36-n)/39. The n gauge wire diameter d n in millimeters (mm) is equal to 0.127mm times 92 raised to the power of 36 minus gauge ...
3/0 (common for large sizes) Pronounced "three-aught" 3/0 AWG #000; The industry also bundles common wire for use in mains electricity distribution in homes and businesses, identifying a bundle's wire size followed by the number of wires in the bundle.
You must use the correct size wire for the current (load) requirement of the circuit to prevent the wire from overheating. The number and type of electrical devices connected to a circuit determine the ampacity requirement of the conductor.
The following wire size chart is intended to be a general guide for wire size and amp ratings
AWG Copper Wire Table Size and Data Chart @ 100 Degrees F. The American Wire Gauge (AWG) measurement system was designed with a purpose: for every three steps in the gauge scale, wire area (and weight per unit length) approximately doubles. This is a handy rule to remember when making rough wire size estimations!
Each wire size, or wire gauge (AWG), has a maximum current limit that a wire can handle before damage occurs. It is important to pick the correct size of wire so that the wire doesn't overheat. The number of devices connected to the circuit usually determines how much current will flow through the wire.
3 AWG THHN Building Wire. Sold by the foot cut to length. Same day shipping and best prices anywhere at WireAndCableYourWay.com