I'm puzzled, I just installed a 14-50 outlet onto my off-grid system. I only had 120V so I purchased a 120-240V industrial GE 5kW transformer (My system can only supply 3.6kW) I plan to limit the charge rate to 3kW max with 2.5kW typical. The transformer does not have a neutral tap but my understanding is that the UMC gen. 2 does not require one, is this correct? I can charge fine at home with this UMC at 120V and fine on my daughters 14-50, 50A. But at home on 240V I can only get a 2 red blinks on the UMC indicating a grounding issue and no charge. I've triple confirmed proper grounding (retired electrician) and it is on the same ground as the 120V outlet, I even added it's own dedicated ground wire. In addition the feeding panel is in my metal building shop and bonded the the frame as well. The transformer is also grounded and mounted to the same metal building. I do get 240V at the new 14-50.
I suspect the the 2 red blinks in my case does not mean a ground issue, but what? Tesla charging support can only say it is a grounding issue.
Any thoughts?
I suspect the the 2 red blinks in my case does not mean a ground issue, but what? Tesla charging support can only say it is a grounding issue.
Any thoughts?