I have a handful of dual-power supply switches that I need to keep running during some upcoming electrical maintenance. I have a few sources of power available, however they're vastly different.
Currently the switches are powered by different breakers on a 208/120V panel. This means that each power supply is being fed by 208 V AC. During electrical maintenance we may experience an interruption to the 208/120 V system, so I'm considering running one power supply on each switch off of our inverter system.
The inverter takes 48 VDC and provides '120 VAC', however it's unique in that the 120 volts is in effect 60 V line-to-ground and 60 V neutral-to-ground. Added together that yields 120 V between line and neutral, thus delivering sufficient power to the end device.
I'm curious if there are any issues having one of the PSUs on 208 V and the other on our inverter. I'm assuming that the supplies are isolated and I wouldn't experience the neutrals being bridged by (in) the switch, however I need to be certain.
Thanks for your input.
B