I've bought a clarke weld 120e and I've been refurbishing it only issue is wires came off the 1/a switch and I've no idea which wires go where please help thank you
It shows that the first switch, labelled "1" and "A", enables the second switch ( labelled "2" and "3" ), when it is in the "A" position. The "A" contact of the first switch is linked to the moving pole of the "2/3" switch, and so the "2/3" switch is only functional when the first switch is in position "A".
The moving pole on the first switch ( the "1/A" switch ) connects to Live of the AC Mains.
The contact that corresponds to the "1" position goes to the furthest end of the transformer primary winding. That will be a solid wire in heatproof sleeving.
The contact for the "A" position is linked with a short wire to the moving pole of the second switch ( the "2/3" switch ).