slipperysam
New Member
- Joined
- Feb 2, 2021
- Messages
- 22
We have now felt this a couple times when opening the metal door of our recently converted bus. For context, our electrical system is largely based on Explorist.Life diagrams (e.g. this one) with a few diversions (24v battery bank, no alternator charging, both 12v and 24v distribution, and a 50a inlet (but just one leg)). In particular there is a single ground wire from chassis to negative bus bar. The Multiplus and SCC are also both grounded to the negative bus bar.
The house I'm renting is old, and the 15A outdoor outlet we had plugged into looked very old as well. I also confirmed the shocks: when plugged into this outdoor outlet, I stuck one end of my voltmeter into the ground and one onto the metal door: ~ 115V.
I then plugged into the outlet in our house's bathroom, which is presumably grounded. The differential went down to ~5V.
My thoughts are that (1) the first outlet likely wasn't grounded and (2) the multiplus just senses that I'm connected to shore power and its internal transfer switch primitively assumes that the shore has bonded neutral to ground, so it keeps them separate, when really in this case they _should_ get bonded together to avoid this "rv hot skin".
Are my thoughts correct? Can anyone help me understand what is happening here and what a potential fix looks like? For my edification, hypothetically what would happen if I just had a rod from my chassis that I spiked into the earth to avoid a differential?
The house I'm renting is old, and the 15A outdoor outlet we had plugged into looked very old as well. I also confirmed the shocks: when plugged into this outdoor outlet, I stuck one end of my voltmeter into the ground and one onto the metal door: ~ 115V.
I then plugged into the outlet in our house's bathroom, which is presumably grounded. The differential went down to ~5V.
My thoughts are that (1) the first outlet likely wasn't grounded and (2) the multiplus just senses that I'm connected to shore power and its internal transfer switch primitively assumes that the shore has bonded neutral to ground, so it keeps them separate, when really in this case they _should_ get bonded together to avoid this "rv hot skin".
Are my thoughts correct? Can anyone help me understand what is happening here and what a potential fix looks like? For my edification, hypothetically what would happen if I just had a rod from my chassis that I spiked into the earth to avoid a differential?