EPO connections

[jonny1]

Would someone go to the trouble and explain the connections for an EPO at the distribution board pls. Its a 3-phase 160A

 

[wattsup]

Do you mean emergency stop for the whole board, or ups/suite only.

 

[jonny1]

No UPS just shuts down the dis board.

 

[wattsup]

Then it's simple. Just install a 160amp contactor between feed to the board. The coil feed fed from the board, line out through n/c stop button/s. The N direct on other side of coil.
The coil will re-energise if the stop button is released.

If you require reset facility then its a bit more involved.

You would probably need to fit an isolator prior to the contactor also (assuming there isn't one already.)

Sometimes it is advisable for lighting to be fed separate, thus hitting the es will not cut lighting