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EPS BOX SP Compatibility
Posted: Sat Jun 13, 2026 8:00 am
by serbyiodice
Good morning, I’m not sure whether the EPS BOX SP system is compatible with my single-phase inverter, model H1-3.0-E.
Thanks to anyone who can help.
Re: EPS BOX SP Compatibility
Posted: Sat Jun 13, 2026 8:28 am
by Dave Foster
The Fox product only works with their latest generation single phase inverters (H1 Gen 2, KH)
The EPS output of the Gen 1 H1 was not particularly clean (not pure sinusoidal) and those users that needed to run on EPS for continuous periods have upgraded to the Gen 2 inverter which has a greatly improved EPS output.
There is a 3rd party product that works well with all Fox inverters, link here
https://www.eco-ess.co.uk/automatic-ch ... r-systems/
Re: EPS BOX SP Compatibility
Posted: Sat Jun 13, 2026 1:42 pm
by serbyiodice
Thank you for your prompt reply. I’d like to take this opportunity to ask: how can I find out the generatione of my inverter? I’m interested in purchasing and having the EPS BOX SP installed.
Many thanks
Re: EPS BOX SP Compatibility
Posted: Sat Jun 13, 2026 4:37 pm
by Dave Foster
If you check the model number on the inverter label (found on the right hand lower side of the inverter), it will show either H1-3.0-E for gen 1, or H1-3-E-G2 for gen 2.