[PSUBS-MAILIST] wiring problem

[Sean T. Stevenson via Personal_Submersibles]

Hank, do a continuity check between battery negative and the hull / chassis / safety ground. There should be no continuity from either battery terminal.  If there is, the DC power supply common is tied down to chassis at one of the devices.  Check the radio antenna as a possible culprit.

Next, check the potential of each power supply connection, not only between + and - at the device, but with respect to each other as well. (You mention tapping 24 V off a 36 V battery - any chance you're between +24 and "0" on one device and +36 and +12 on the other?)

What is the breaker type?

When you say it doesn't work with a ground wire connected - you are referring to a hull connection?

Sean


On June 8, 2016 4:12:21 PM MDT, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>Today I was doing some final wiring and discovered if my hp compressor
>has the ground wire on it,  my acoustic radio  trips the breaker.  What
>the bleep is going on?  Nothing is grounded to the hull anymore.    I
>am taking 24V off a 36V bank for the compressor and the Radio is also
>taking 24V from the same source.  Hank
>
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