About direct current and alternating current of solar photovoltaic wires

About direct current and alternating current of solar photovoltaic wires！

According to the system of photovoltaic power station, cables can be divided into DC cables and AC cables, which are classified as follows according to different uses and use environments:

1. DC cable

(1) Serial cables between components.

(2) Parallel cables between the strings and between the strings and the DC distribution box (combiner box).

(3) The cable between the DC distribution box and the inverter.

The above cables are all DC cables, and there are many outdoor layings. They need to be moisture-proof, sun-proof, cold-resistant, heat-resistant, and UV-resistant. In some special environments, they also need to be protected from chemicals such as acid and alkali.

2. AC cable

(1) The connecting cable from the inverter to the step-up transformer.

(2) The connecting cable from the step-up transformer to the power distribution device.

(3) The connecting cable from the power distribution device to the power grid or the user.

This part of the cable is an AC load cable, which is laid in the indoor environment, and can be selected according to the general power cable selection requirements.