1 mm

1.5 mm

2 mm

2.5 mm

To avoid short circuit

To operate easily

To test the supply frequently

To avoid personnal contacts during maintenance

For cable entries

For air circulation

To release the heat

To extend the busbar

Brass

Galvanised iron

Aluminium

Bronze

Red, yellow, black, green

Red, blue, black, yellow

Red, black, green, blue

Red, yellow, blue, black