Our church wiring is, in many parts, pretty ancient, but the cabling is very sound, however it is a single phase circuit. We will have two blowers providing wind to the organ. One is single phase, so connects ok, but the other is triple phase (no-one makes suitable single phase blowers any more) and has to have an inverter connected to it to convert the current.  The big problem was how to wire everything so that both blowers and all the other electric components on the organ start with a single switch and also avoid having to rewire the whole of the West gallery. Paul, our electrician (who has become an expert at sorting out circuit problems in old churches since he started working at All Souls!) has now cracked it. Thursday was a long day for him and his team, but all the mains wiring is now in place, the blowers are safely wired in, and there are plenty of plug sockets now ready for the console lighting and switching and, eventually, the CCTV system to be plugged in. Now we can get back to organ building!