Under normal circumstances, the thickness of the cable is designed and installed according to actual requirements. Take our current 12V 110V car power inverter 300W as an example. Most of the standard clip lines or cigarette tip lines in the market are 2.5 square meters. . It can carry 16A current. According to this calculation, it can carry the maximum power of 16X220=3520VA=3.52KW
However, if inverter working at 300W full load, you will find that the power cord will become hot and soft, which will gradually weaken the load capacity.
If the distance between the battery and the inverter is very long, in order to reduce the loss of the line caused by the current attenuation, and in order to avoid the above-mentioned problems, we need to replace more than 4 square copper wire.
Of course, there are some inverters that do not use pure copper wires in order to reduce costs, or use the copper-clad aluminum wires, so we have to figure out when choosing them.
However, if inverter working at 300W full load, you will find that the power cord will become hot and soft, which will gradually weaken the load capacity.
If the distance between the battery and the inverter is very long, in order to reduce the loss of the line caused by the current attenuation, and in order to avoid the above-mentioned problems, we need to replace more than 4 square copper wire.
Of course, there are some inverters that do not use pure copper wires in order to reduce costs, or use the copper-clad aluminum wires, so we have to figure out when choosing them.
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