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The HIS would be connected to the generator port of the Sol Ark. Would the HIS need a signal from the MID to begin supplying power?

Can an HIS/CSP be AC-coupled to an existing inverter like a PowerWall or Sol Ark and still retain the capability for home power backup?

If anyone has clarification on above or more info please add to discussion. :). I'm trying to get a tesla solar system installed at the same time so figuring out how HIS could potentially interact with that is another area I'm researching if anyone is doing the same. I'd like to have at least...

I already have the truck - and solar with a battery backup system. I'm just looking for the best way to integrate the two.

I probably don't understand your question. The power flow is always going to be from the truck's battery to my home grid or for recharging a small bank of AGM batteries. Power going to the truck will be from chargers, my own or commercial fast chargers. If you don't use SunRun's HIS, I agree...

If you just draw power from the Lightning’s 240v port, tapping the Lightning’s battery for power appears to be straightforward – with several possibilities for solving the bonded neutral problem. However, for those of us who have solar with battery backup systems, at least my objective is to use...

Thanks for all the replies. I should have been clearer. I don't have a problem yet and don't 'know what I am doing'. But I talked with an electrician yesterday who does. I do know what I would like to do - and I suspect what a lot of people with existing battery backup systems and...

Not impressed with Sol Ark's technical support! My electrical knowledge is about as minimal as you can get. From what I've been able to determine, there are two types of generators: bonded neutral & floating neutral. It would appear most portable generators are bonded neutral for safety...

It's the "rewire" part I don't like but maybe that wouldn't cause problems for a professional electrician. Since the principal generator would be my Lightning, would I have problems using an autotransformer with twice as much capacity as needed for the Ioniq5? Any thoughts about code compliance?

Good to hear neutral forming autotransfomers are still a possibility. It appears there are a lot of possibilities with which even professional electricians may not be familiar. Some questions: I assume this type of transformer is readily available? Is its use code-compliant? Can I get a...

For my electrical education: presumably the Lightning's generator needs to be connected to ground in the circuit because current could be transmitted through transformer induction even though there is no neutral connection? Isn't the idea of a neutral bonded ground to send current back to a...

Thanks! This looks pretty definitive.

For my electrical edification: I’m guessing both switched neutral transfer switches and isolation transformers solve the problem of the Lightning potentially back feeding current from its neutral bonded generator to other components sharing its ground by having their own real earth grounds? So...

There appears to be a difference of opinion: Is v2h8484 saying 'you can get away with connecting a Lightning to a Sol Ark 240V generator port because the Lightning only checks 120V loads for faults?' The link included in the post suggests the tripping is "due to load imbalance", not ground...

I assume isolation transformers, autotransformers and switched neutral transfer switches are all code compliant? If that's the case, would an autotransformer be the most straight-forward, least expensive way to go? 10k watts large enough to cover what the Lightning can supply?

I'll second that. Thanks! I'm going to pass this to my electrician. I found this with a quick check of Amazon: 10000W Voltage Converter Transformer Step Up/Down 110V/220V Heavy Duty Voltage Converter USB Transformer Power Converter Circuit Breaker Would all autotransformers be split...

IIRC I discussed transfer switches with an EE who concluded it would be dangerous because of potentially different voltages in the power supplying my home grid from circuits not supplied by the critical loads panel & Lightning battery when the grid comes back on line? The quick and dirty...

I don't understand this. Asuuming a neutral transfer switch would solve the ground fault issue between the Lightning (generator) and the Sol Ark (?), the Sol Ark must already have solved any issues between itself and the house wiring (connected via the grid and load ports)?

Thanks! If I did the math right, an appropriately sized isolation transformer (7.5kVA?) isn't cheap, about $3k on Amazon. Since actually needing to do this will hopefully be seldom to never I'm thinking the best real-world solution is removing the grounding pin in the connecting cord. There...

I am having trouble putting all this together. This is from the Sol Ark 12 owner’s manual: The system must have Ground connections and Neutral connections. Ground MUST be bonded to Neutral ONLY ONCE in the circuit. And this is from the Lightning...