FoxESS Community - Owners & Installers Forum

I’m a relatively new Fox customer based in the U.K. I currently have a fully working 3-Phase ‘hybrid’ setup composed of 5 x Foxx EP11 batteries, a H3 Pro 15 inverter, and 31 Aiko 450w solar panels each with its own associated Enphase micro inverter.

I would like my setup to be able to switchover and continue to operate fully (‘whole house’ mode) using solar generation and stored battery power, in the event of a full grid outage. I’m aware that you can have a single plug socket or a single mains circuit become live in the event of a full grid outage fairly easily, but I’m seeking auto-cutover for the whole house.

My installer told me at the point of installation that my system could not do this, but that new products were coming out from fox ‘soon’ that could enable this. I spoke with Fox technical support recently who told me that a new product was indeed coming out later this year that will meet my needs, specifically for 3-phase systems. The new product is a ‘EPS BOX PRO-HC’ I’m told.

Is anyone else aware of, or tracking, this upcoming new EPS product?

Have a read here about the single phase product, there is a delay in switching gear that you might not like
viewtopic.php?p=15407#p15407

Thanks for the link. That is indeed not what Fox infer on their website. I can see (and agree with) your frustration here.

I did spot that a 2-3 second cutover delay would occur even with the new EPS product, which seems unavoidable. I currently have a small UPS that protects my NAS, NUC and Unifi kit which gives me about 10 mins of cover in a power failure (its been tested a few times). The battery in the UPS is quite old now so I could probably move that up to 20 mins with a new battery and/or a larger UPS to protect this most critical equipment. Even with the current UPS in place, I'll be able to accommodate a sub 10s cutover period without issue I think. None of that will protect things like fridges or freezers that are currently wired into the mains, which I've seen first-hand blow during a power cut and restoration. Hopefully the Fox equipment will at least smooth some of that out spikiness out in the power supply.... (he hopes).

for info, here is the data sheet for the upcoming 3-phase EPS that Fox told me about:

https://www.fox-ess.com/Public/Uploads/ ... 250905.pdf