![]() ![]() Wire Circular mils 3 x 2 x x I x L / ( Allowable Voltage drop of source voltage ) Note: the Value of Specific resistance or resistivity of Conductor is used here for copper and aluminum is 11.2 and 17. Please note Wire And Cable Your Way does recommend consulting with a local electrician who can advise you on all local codes and other variables that may effect the wire size needed such as the length of your run.įeel free give us a call at 85 or email us here with any questions. Calculating Wire/Cable Size formula for Three Phase Circuits. AWG: In the American Wire Gauge (AWG) system, wire size diameters can be calculated by applying the formula D (AWG).005♹2 ( (36-AWG)/39) inch. Single Conductor #1 gauge Aluminum WireĬlick here for pricing on #1 gauge Aluminum wire 3.) 2-2-2 Ramapo Triplex Underground Secondary Distribution Cable for 100 Amp Sub-PanelĬlick here for pricing on 2-2-2 (URD) Triplex Aluminum Underground CableĪll of the cables above are in stock, available by the exact foot you need, and shipped the same day ordered. Find the ampacity of conductors in different wire gauges and temperatures using the charts and calculator provided by Cerrowire.Copper Wire Size, Aluminum Wire Size, Service or Feeder Amps. Finally, note that the amp capacity (ampacity) of the wire curtails using. Service or Feeder Rating Amps and AWG (or kcmil) Wire Size Chart. Single Conductor #2 gauge Aluminum WireĬlick here for pricing on #2 gauge Aluminum wire 2.) #1 XHHW-2 Wire for 100 Amp Sub-Panel Find the length of the circuit on the vertical axis of the chart, noting that.Rated for direct burial - no need for conduitĬlick here for pricing on #2/3C with ground Tray Cable (THHN-PVC) Aluminum Wire 1.) #2 XHHW-2 Wire for 100 Amp Sub-Panel.The chart shows the allowable ampacities of insulated conductors rated up to and including 2000 Volts, 60C through 90C, based on ambient air temperature of 30C (86F). Multi-Conductor #3 gauge THHN Copper Wire Find the correct wire size for your electrical current and conductor type using this online calculator and table.Using a smaller wire gauge for a 40-amp breaker violates the code and presents a safety. ![]() It is possible to install a 40-amp circuit breaker on a larger gauge wire, such as a 6-AWG wire, but installing it on a smaller gauge wire will violate the code. Single Conductor #2 gauge THHN Copper WireĬlick here for pricing on #2 gauge THHN wire 3.) #2/3C with ground Tray Cable (THHN-PVC) for 100 Amp Sub-Panel The correct 40 amp wire size needed to operate with a 40-amp breaker safely is an 8-gauge wire.Single Conductor #3 gauge THHN Copper WireĬlick here for pricing on #3 gauge THHN wire 2.) #2 THHN/THWN-2 Wire for 100 amp sub-panel.Copper Wire 1.) #3 THHN/THWN-2 Wire for 100 Amp Sub-Panel Looking for the right size wire for your 100 amp sub-panel for a detached building, garage, or shed?īelow are the best selling wires our customers use for service to a 100 amp sub-panel - all available by the foot at our store. ![]()
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