What size wire for 60 amp service 300 ft away. The national electrical code nec recommends a maximum voltage drop of 3 percent for individual household circuits known as branch circuitsthis is a good goal to shoot for when sizing the conductors for an underground cablethe following are the maximum lengths of cable you can use while still maintaining a 3 percent voltage drop for the given wire size awg and circuit voltage. The cost of wire. 120 amps is 2. Also have you considered running two legs of 30 a a piece.
This gives you the opportunity to run two 120v circuits off two different breakers from your main panel to the shop. Last edited by backstay. The calculator allows entry of a voltage drop but caution should be used when doing so to make sure you are calculating the wire sizes in accordance with nec article 210 19 fpn no. For 300 feet for 100 amp rated service i would use aluminum direct burial 10 10 10 10 the forth can be as low as 4 for the ground but also in conduit even if in conduit must still be rated underground wire and required by.
The type of wire to use in most instances is service entrance cable sec. For that service would use urd aluminum 4 conductor cable need 2 hot neutral and should have separate ground to shop grounds isolated from neutrals in shop panel. If you are 60 feet away and you use copper wire you will need 180 feet of copper wire and a ground wire of at least 10 wire all copper. Depends on the size of the sub panel in that garage.
Are you running it underground. As the previous poster said six gauge is the correct wire for 60 a. 4 the nec allows a maximum of a 3 voltage drop on the main branch of a circuit at the farthest outlet of power and 5 total to both feeders and branch circuits to the farthest outlet. If you are installing a 60 amp sub panel 400 feet away from the main service panel then use awg 4.
At 60a it sounds like y. 300 mcm at 60 amps 300 ft is 1. If this were my shop and i needed 60a service at 100 feet i would likely run 8 gauge wire 83wground. A 1 copper wire with an insulation rating of 90 degrees c is rated at 140 amps.
What size wire is needed to feed a 125 amp sub panel from a 200 amp panel less than 200 wire feet away. And it will have to be installed in conduit unless you use a uf wire 6 again the cost would be more efficient to use urd cable. You can use 10 awg much cheaper. 05 29 2017 at 0234 pm.