Choosing the right DC wire sizes in your Solar PV system is essential for both performance and safety reasons. The wires need to be correctly sized for the current and voltages used in your system. Before you install your system, make sure you are up to date with the South African National Standard (SANS) 10142, also known as the “Code of Practice for the Wiring of Premises”. Use SANS 10142-1 for cable sizing and derating factors.

The wires must meet the following characteristics:

1. The voltage rating must be equal or greater than the voltage rating of the system;

2. The current carrying capacity must be equal to, or greater than, the current to be carried;

3. Must be able to withstand the environmental conditions;

4. Special attention to be paid to voltage drop.

Alvern Cables has a range of high quality and internationally approved solar cables for all PV system installations.