[ausev] Troubleshooting electrical drain issues

[Rob Hirschfeld]

All,

I could use some advice on tracking down a power drain.  My various controls (fans, vacuum pump, relays, etc) are drawing so much power from the Astrodyne DC-DC converter that it goes into "power overload shutdown." The lack of DC-DC over draws my poor auxiliary battery which turns off the contactors when I brake!

If I take the pump and fans out of the circuit, the converts runs fine.  If I put them back in then it immediately shuts off.

The relays, contactors, fans, and pump are basically wired in parallel.

Does anyone have a suggestion on how I could track down my power loads per circuit.  I have an ammeter, but it only goes up to 200 millis.

Note: I was able to demonstrate that the DC-DC converter is working fine.  It recovers from overload after a power cycle.

Rob