Wiring 133/230Y System

Sparkingchip:

Not something I am experienced with and I am never likely to be.


I did do a quick bit of reading last night and that left me wondering what actually happens under first fault condition such as touching a single exposed conductor?

In principle, nothing different to when touching a single exposed conductor on a UK type 230/400 volt system. Except at a lower voltage.

An electric shock at 133 volts would be received, less risky than at 230 volts but by no means benign.

The usual precautions should be taken to avoid contact with live conductors.

A suitable RCD would greatly reduce the risk of this shock being fatal.


For a 2 wire circuit, a standard UK type TRUE TWO POLE RCD would be suitable.

For a 3 wire circuit a special RCD intended for the lower voltage would be needed. These are readily available in countries that use 127/220 volt systems, the very similar 133/230 volts about which we are talking.

Sparkingchip:

Not something I am experienced with and I am never likely to be.


I did do a quick bit of reading last night and that left me wondering what actually happens under first fault condition such as touching a single exposed conductor?

In principle, nothing different to when touching a single exposed conductor on a UK type 230/400 volt system. Except at a lower voltage.

An electric shock at 133 volts would be received, less risky than at 230 volts but by no means benign.

The usual precautions should be taken to avoid contact with live conductors.

A suitable RCD would greatly reduce the risk of this shock being fatal.


For a 2 wire circuit, a standard UK type TRUE TWO POLE RCD would be suitable.

For a 3 wire circuit a special RCD intended for the lower voltage would be needed. These are readily available in countries that use 127/220 volt systems, the very similar 133/230 volts about which we are talking.