mikechaf

Digging through the logs, I found "installed aux power jack in panel." back in 2011, but no mention of fuses, what circuit breaker it was on, etc. Similarly no mention of these jacks during the more recent glass panel upgrade in 2019. Once I get some replacement fuses I'll play around with the circuit breakers to see where the two sockets are counted with a multimeter. ragsf15e, where did you see that the Inogen G5 could draw 12.5A? If you can trust Google's AI, it says the highest setting (flowrate 6) consumes 61.5W. The single battery stores 46.1 W-Hr, and the spec sheet says 4 hours to charge. Putting that all together running off a 12V aircraft bus voltage (and assuming 90% charging efficiency) I get about 6.3A total power draw off the socket, which matches well with the 7.5A circuit capacity that Tom from Windblade suggested. Good to hear, PT20J. I'll see if I can verify the wire gauge before I jump to swapping out the fuse. Are there any other gotchas I should be worried about? I'm suspicious that the 2x 5A fuses could be explained by driving both of the sockets off of the 10A circuit breaker.

I've been flying my new to me 1978 M20J for a few months now. I recently purchased a inogen G5 oxygen concentrator to increase comfort flying at and above 10k feet. My mooney has a 12v electrical system so I figured I could just plug it into the cigar lighter in the aircraft with the adapter for cars. Tom Laux of Windblade suggested that if I have >7.5A on the capacity plug, then it should be no problem. I reviewed the electrical diagram (http://mooney.free.fr/Manuels M20J/M20J/Mooney Service Manuel M20J Vol. 2 of 2.pdf page 4 for my s/n)and saw it is on the 10A circuit breaker (shared with ignition) and didn't see any fuses depicted (did I just miss it?). During my first two flights with the G5 starting fully charged, the system successfully maintained 100% charge from the aircraft while running on the max flowrate. On my third flight, I started with the unit at ~80% state of charge before plugging it in. After a few seconds the device lost power, and I plugged it into the other socket which had the same result. I dug around behind the panel and found a 5A fuse inline with the socket, which would make sense given my experience. I was surprised to find this given I had not found it on the service manual schematic. In the meantime, I intend to replace it with another 5A fuse, but I am curious for input from others as to why this fuse would be there if it wasn't in the schematic? I would love to swap it out for 7.5A or 10A fuse assuming the wiring and other systems are sized to handle that current draw. Does anyone have any insight they can offer?