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Transmitting low bandwith data through long, non-ideal cables
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2N3055:

--- Quote from: tggzzz on March 10, 2021, 01:24:19 pm ---You would be wise to consider failure modes including (but not limited to)...

Any equipment on each end is connected to a different phase.

There is a difference in the ground/earth/line voltages at each end, especially if there is a line fault or lightning strike.

Somebody puts a shovel through the cable, and shorts conductors.

Insulation resistance between conductors when water has crept into the cable.

--- End quote ---

Absolutely good thinking, hence my recommendation to use commercial optically isolated converters....
kripton2035:
may be you could also get rid of the cable and use a lora network ?
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