125 Amp Feeder Wire Size

The wire size calculator will give you a very simple and quick solution to the problem of calculating the size of wires and cables for pump applications in golf courses landscape projects and agriculture.

125 amp feeder wire size. The requirements of the national electrical code nec and local codes must always be followed. Sorry about the other post. 125 amp sub panel most likely i would choose 2 awg copper.

Let me re phrase that. You may be limited by the size of the feeder wires coming from your main panel to your sub panel in the garage. 1 0 al is rated 120 amp use 240 4 b move up to next.

Or if you want al 1 0. The wire size according to code has to be up sized to 125. What size wire should i use in aluminum as it is cheaper.

I understand i could use a 125 amp breaker but i do not need the additional amperage. Aug 6 2005 3 re. Breakers are meant to protect the wiring in the wall from overloading and getting.

If it is currently fed by a 2 pole 40 amp breaker at the main panel then the size of the wires going to the sub panel are not likely to carry much more than 40 50 amps if they are 8 size wire gauge. Source voltage the choices in the calculator are the most common and are nominal values. The number of devices connected to the circuit usually determines how much current will flow through the wire.

Each wire size or wire gauge awg has a maximum current limit that a wire can handle before damage occurs. You can size the neutral to carry the maximum unbalanced current possible with your system. Put holes in either the top or the bottom of the panel and then secure the knock out clamps onto the panel and pass the leads through and tighten using a screwdriver.