1, electric car charging cable is 2.5 square and 4 square can be.
2, if from the price point of view, the short distance is recommended to use 4 square, because the price and 2.5 square is not too much difference. If the distance is too long to consider the charging current, 2.5 square can be loaded 16A-25A about 5.5kw of power, 4 square can be loaded 35A-40A about 8kw of power. 2.5 square and 4 square.

From the charging line a few square refers to the cross-sectional area of the wire, 2.5 square and 4 square can support high-power household appliances. Short distance is recommended to use 4 square, the distance is too long, we must consider the charging current, 2.5 square can load 16A-25A about 5.5kw of power, 4 square can load 35A-40A about 8kw of power.

Second, the electric car charging line to determine the charger charging current, according to the 32AH lead-acid charging current is 3.5A or 7A, the maximum output power is 70V * 7A = 490W/0.8/220V = 2.78A, 220V on the maximum input current is about 3A, copper core wire 1.5 square meters is enough. The longer the line, the thicker it should be. If you extend the output line, 20 meters, positive and negative is 40 meters, that may need to use more than 2.5 square lines to do. Properly thicken some better, the wire diameter is thick plus insulation skin after the overall thick, so that the extension of the pull is also enough, more secure.

Of course, the car charging cable to the signal line principle.

The proportion of modern automotive electronic components more and more, in addition to the engine, chassis, body three major electronic control systems and a variety of executive components (relays, motors, etc.), and a variety of sensor parts (only the engine processor includes: air flow, air temperature, engine temperature, oxygen sensor, cam position, detonation sensor, crankshaft position, throttle position, etc. about ten kinds), these sensors generate The weak electrical signals generated by these sensors need to be delivered to the corresponding system processor or display through a special cable, these cables are signal lines.

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