Pat testing

loadz

Hi

I did a pat test on an appliance fed from a bus bar trunking and when i plugged the tester into the socket fed from the bus bar it came up with the message reversed polarity. I then tried a couple of different sockets fed from the same bus bar and the result was the same. Any appliance that gets plugged in works so i was wondering what would be the cause of this. Could it be the phase and neutral connected wrongly feeding the bus bar trunking.

On a separate note, are there any testing courses one can do for testing commercial premises.

M cebee

is there a plug and lead off the busbar down to a socket?


must be either the plugs/sockets or the busbar


needs to get sorted if it is reverse

Buford T Justice

Can you check the phase on the cables in the socket with a phase tester or voltage detector, Should show up if the live is running down the Neutral cable.

loadz

The sockets are fed from different plug in boards through rcd's but they are all reverse polarity. It would seem that the mains to the bus bar trunking is connected up wrongly. Would this not cause a problem with other circuits fed from the same board that's feeding the bus bar. I never came across it before.

M cebee

should've figured with the busbar--rcd protected tap offs


serious anyhow-either the tap-offs are all wrong or the busbar is reverse(is it SP busbar?,couldn't imagine this going un-noticed on 3-phase)