ps. Old knowledge from old prior career experiences.
I use arc welding cables for connections, not 4 ga wire that takes a pipe
bender to work into place.
Welding cables, are multi wire, and that means "multi" with a capital.
Very flexible and capable of very high amps. It is for arc welding
Long ago, the company had the budget, so we bought single phase for each line.
Thinking that we did not want any cross talk interference, which we had already
experienced in the real world.
Then we also had built the various configurations for supply power that we
used.
In essence measuring
we had a pre-compliance chamber, well correlated to compliance labs.
so our inside pre-compliance testing is easy. a bit of capital to get there.
We make quick scan on about every variation to get idea of the worst.
Then the rest of our attention is on the version.
Our goal is not detectable,
For EMC if the concern is emissions it would be easy to do some quick scans –
10 minutes on a peak run for each model would give you data to compare against
each other to see how much the emissions profile changes due to the
modifications. Immunity would take longer but the manufacturer should
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