You also much acquire permission for the electrical works. The size of the wire can be different based on the codes of your living area. If your local codes are different from the NEC codes, you must prioritize the local codes and ignore the NEC codes. Local building codeīefore choosing the right wire size, you must consult the local or NEC code. You must use copper wire here since it can carry enough current without overheating. ![]() You will have to change the wire gauge accordingly. If the voltage drops to 20% for every 100 feet, it should be 30% for 150 feet and more for longer distances. So, you need to use a higher gauge, like 2 or 4 AWG. ![]() You can use smaller gauges to deal with this issue or increase the amperage to adjust the voltage drop.įor every 100 feet, the voltage drops by 20%. It can overheat the wires and result in fire hazards. The higher the voltage drop, the more current you lose. Generally, the voltage drop remains around 3%. ![]() It is another issue that determines the wire size for 50 amps. The longer the distance, the higher the gauge.įor longer distances, the copper wire would be better than aluminum. Generally, a 6 AWG wire is enough for 50 amps.īut, if the distance is higher, for example, 150 feet, you should use a 4 AWG wire, which is generally rated for 70 amps. You can deal with this by increasing the wire gauge. That will heat the wire at a pretty fast rate. The longer the distance, the higher the resistance. These have copper fittings at the end, which gives some copper benefits. If you use aluminum or copper-clad aluminum, you must use a lower gauge than copper, i.e., a 4 AWG wire.Īnother type of wire is copper-clad aluminum wire. You can use a 6 AWG copper wire for 50 amps if you use copper wires. However, the wire size of aluminum and copper-clad should remain the same. They are good conductivity and heat resistance, better than aluminum, but not as good as pure copper. These are a better version of aluminum that holds little copper benefits.Ĭopper-clad aluminum has some copper fittings at the ends. You can use them for shorter distances.Īnother option is copper-clad aluminum wires.
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