I'm trying to charge my electric vehicle with a solar panel setup, and I've run into an issue with my inverter. I have a 4000W 230V inverter, and I'm getting readings of 140V between the inverter's neutral and ground, and 90V between live and ground. This seems to be triggering a red light on my charger because it detects a grounding issue.
I attempted to connect the neutral and ground together inside the inverter to resolve this, which worked for some people, but it caused the voltage between live and neutral to drop from 230V to 120V. So, it didn't fix anything effectively, just created a new problem. I'm considering changing the inverter if I can't resolve this, but I'm unsure if the next one will have the same issue as there's no specification regarding voltage between neutral and ground in the inverter specs. Any thoughts on what I should do?
1 Answer
It sounds like your inverter has a floating neutral, which can be problematic since your EV charger won't allow a floating neutral due to safety concerns. It needs a bonded neutral to work properly. You might want to consider getting an inverter that specifies it has a bonded neutral. It’ll likely save you a lot of hassle later on!
What do you recommend I look for in an inverter to avoid this floating neutral issue? I couldn't find much info on it while searching.