MEXICOWANDERER wrote:
The power calculations do not fit.
I agree. I suspect "published" numbers are being reported and not measured numbers OR with and without humidifier is being confused.
MEXICOWANDERER wrote:
The subject of powering a breathing apparatus via an RV 12 volt system has omitted one vital fact.
DISCONNECT THE DEVICE BEFORE STARTING THE ENGINE in a camper or motorhome. The unit primary protection is contained within it's medical grade switched power brick. Contact ResMed or Respironics about the particulars of this. Starting the engine is a big no-no and for good reason.
I'm not sure why one of these devices (or inverter) would be connected to the starting battery but I suppose every coach is different so it is possible. Mine is connected to my house battery and I rarely ever disconnect it. Not a problem in several years of full-timing.