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Message: <blockquote data-quote="Fruitcake" data-source="post: 6123421" data-attributes="member: 191406">Forget running your AC - I would be worried about STARTING your AC, with just one Powerwall, in an off-grid/outage scenario.A single Powerwall can supply 30A. That's it. The only way to increase your amperage is to add more Powerwalls.Some AC compressors can require more than 100A (!) or more to start. It's a specification that can be found on your compressor called LRA, short for Locked Rotor Amps. So when your compressor tries to start, it will try to draw 100A (or more), and your lone Powerwall will give up and shutdown, and now your entire house is down hard.So, check your AC compressor's LRA! If the LRA is low, like 20A or so, you're (probably barely) OK. Otherwise, there are several choices:1. Add more Powerwalls (thereby increasing the max amperage your system can deliver).2. Exclude your AC compressor from your backed up loads. This means you won't have any air conditioning during an outage. But, you won't overload and shutdown your system either.3. Replace your AC compressor with a more modern compressor with a low LRA.4. Get a "Soft Start" capacitor for your compressor. These will store hundreds of amps in advance, so that when your compressor starts, it will draw that huge surge of power from the capacitor and not your Powerwall.5. Do nothing and drink heavily.Me? I have two Powerwalls and a hog of a compressor (160 LRA) with a Soft Start. Starts with no problems whatsoever.Fruitcake</blockquote>

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