For 300 amp service, you will want copper wire of size 500 kcmil to be able to handle the load.
However, most of these wires, so you can use THHN and THWN interchangeably.ģ00 amp. THWN has a maximum temperature of 90☌ in dry and wet locations, whereas THHN wire can only be used in temperatures as high as 75☌ in wet locations. The main difference between these two standards is their maximum temperature in wet locations. Which is better between Thhn and THWN wire? Most common building wire used often on sub-panels, hot tubs & jacuzzis. 6 AWG THHN-THWN-2 is permitted for new construction or rewiring for 600-volt applications.
#100 amp wire size thhn code#
The cable must have a wire gauge sufficient to the amperage of the subpanel-a 100-amp subpanel requires #4 copper wires or, more commonly, #2 aluminum wires, for example.Īpplications: 6 AWG THHN/THWN-2 building wire is intended for general purpose applications as defined by the National Electrical Code (NEC). What size wire do I need for a 100 amp breaker? All household wires have a rating of at least 600V, so only amperage really matters when it comes to determining wire gauge. Each wire should be 2-gauge in size.įor 60 ampere breakers, electricians and professionals suggest using a wire size gauge ranging from 6 AWG to 4 AWG. The cable must contain one or two hot wires depending on your needs, one neutral wire, and one ground wire.
#100 amp wire size thhn full#
When it comes to the lines connecting master and secondary panels, where the line will carry as much as a full 100 amps, use a 2-gauge non-metallic sheathed electrical cable. What size Thhn wire is good for 100 amps? #8 Gauge THHN Copper Stranded Wire is the most popular single conductor copper wire we carry and is RATED FOR 55 AMPS 90☌.
#100 amp wire size thhn free#
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. 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.Single Conductor #2 gauge Aluminum WireĬlick here for pricing on #2 gauge Aluminum wire 2.) #1 XHHW-2 Wire for 100 Amp Sub-Panel.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.Multi-Conductor #3 gauge THHN Copper Wire.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.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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