Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 20,808
My reasoning for switching neutrals was based on having only the neutral come from the AIO to the sub panel when operating. Possibly not really needed. My neutral ground bond is at the main panel. The sub panel is not bonded.
When running on AOI, neutral is not bonded. A short from line to ground would not trip a breaker or crowbar output. If ground is isolated, chassis may float to a voltage that can shock but is low current. If ground goes to main panel, the other line would go to 240V and neutral to 120V. Protection of consumer from contacting neutral usually isn't as good. Ungrounded single phase appliances will AC couple (low current) to the voltage. Grounded devices with EMI filters, and surge arrestors, will experience excessive line to ground voltage.
You ought to ensure neutral is bonded to ground. Most simply, by not switching it.