Question - auxiliary power

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Apr 19, 2006 | 07:16 PM

#21

WScottCross

Megageek

Joined: Aug 2005

Posts: 185

From: CT

Re: Question - auxiliary power

Quote:

Originally Posted by dbennettya

I don't think they are in error, I believe the AC inverter for the AC outlet on the console runs off 12V (there is a 30A 12V fuse for it). There is DC/DC converter that runs off the HV battery to make 12V, but I don't understand its entire purpose yet. Or am I wrong again?

YMMV, Don

You are correct. The DC-DC converter is what charges the 12V battery and supplies 12V power when the vehicle is "running" (when the key is in the Run position). When the key is off, the inverter or the secondary 12V outlet (if you don't have the inverter) are powered by the 12V battery. This has to be this way because of the HV cutoff relay which isolates the battery pack for safety reasons when the key is off.