djbroughton wrote:
I am trying to run my CPAP machine from a light fixture above the bed instead of through the main inverter. I wired a 12 v cigarette lighter outlet into the fixture. The voltage reads 12.5 v and I can run other AC appliances through the portable inverter at the new connection. This inverter, which says 175 w peak and 100 w continuous also works when I plug it into the cig lighter on the dash with the CPAP but not at the new connection. The CPAP adapter says it requires 90 w.
Why will my CPAP machine not run at the new connection?
Well i would have to say its likely voltage drop due to the length of wire from the batteries and it matters "much" more the more amps you try to pull from a long wire connection. The fix is connect close to the batteries and run an extention cord to the cpap
