Since I have some old school type tube gear, I use a GFCI with manual reset, which is helpful not only for personal safety but also protects the tube gear from significant AC mains fluctuations. The CMX-2 Precision AC Line Restoration & Common Mode Filter System seems like an interesting piece of equipment, and I am wondering if it can be used in series with a GFCI.
Which should come first from the wall socket, the GFCI or the CMX-2, or would it matter? The GFCI, I believe, has some active circuitry in it, but I have no idea if it puts any noise, or, perhaps more importantly, any DC offset of its own, onto the AC mains. If it were to do so, then I suppose the CMX-2 should come after it. But, whether before or after the GFCI, I wonder if there is anything about the operation of the CMX-2 that might cause the GFCI to trip?
Hands-on experimentation should be more revealing, but I was wondering if anyone had any thoughts about this.
Last Edit: Jun 20, 2017 10:51:37 GMT -5 by petercapo: Clarification.