Quote:
Originally Posted by Station X
If you connect the two earths together and disaster happens, this suggests that one earth isn't an earth. Have you checked the resistance between them with the power off and the voltage between them with the power on?
Can you post a portion of the circuit diagram please.
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Correct - Yes - See my last reply - earths are different one is ‘0’v and the other is Chassis earth but the circuit dgm and all written documentation show them or say they’re earth (with the same symbol). Tks on Rx -18v, Tx -127v!!
Not sure how to attach these drawings.