What Size Wire For 125 Amp Service
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The amp rating on this main circuit breaker identifies your electrical service size.
What size wire for 125 amp service. 125 x 80 100 amps. How to wire a 125 amp service step 1 firstly ensure that the power is completely off for safety reasons by disconnecting the power leads from the meter. I understand i could use a 125 amp breaker but i do not need the additional amperage.
The wire size chart below shows allowable ampacities of insulated conductors rated up to. Source voltage the choices in the calculator are the most common and are nominal values. It is important to pick the correct size of wire so that the wire doesn t overheat.
All wiring will be copper two 2 thhn for hot one 3 thhn for neutral and one 4thhn for the ground. The run will be about 100 feet and the breaker boxes are 125 amp. Turning this main breaker to the off position shuts off power to the entire house and all the branch circuits.
You can use 14 gauge wire for a 15 amp breaker but you must use 12 gauge which is thicker for a 20 amp 10 gauge for a 30 amp and 8 gauge for a 50 amp breaker. Do these sound right i ve looked at some of the online calculators and they all say to run 3 for everything. I assume i need to run 4 wires 2 hot 1 neutral and 1 ground.
The requirements of the national electrical code nec and local codes must always be followed. A wire with a rating of 125 amps. It is a double pole breaker connected to both 120 volt service wires to power both hot bus bars running down through the panel.
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. Each wire size or wire gauge awg has a maximum current limit that a wire can handle before damage occurs. I m looking for suggestions on wire size this is what was given to me by a friend of mine.
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