When using connectors with specific working voltage ratings, does this refer to:
- The relative voltage between any two adjacent pins,
- The absolute voltage relative to anything within the system, or
- The voltage across the gap before the connection is made (like with a relay's switching voltage)?
For example, would a connector with a 50V rating be safely usable in this way?
My understanding would be that the voltages only exist relative to each other, so pin 1 at 0V shouldn't care that pin 4 is at 90V, but it equally feels wrong to be using a 90V potential with a "50V" connector.