We are all electric, have two of the above plus four storage batteries totalling 34 kWh’s yet in the event of a power cut have no access to switching anything on be it heating or lighting.
I believe the inverters are capable of supplying energy in the event of a power cut via an Emergency Power supply but can find no information on how this can be implemented.
I’m hoping somebody can advise me or my installer further on the matter please?
There’s a guide on the givenegy KB site
Google givenegy KB EPS
That should get you what you need.
Many thanks TX200 that is very helpful, I’ve downloaded the five page guide and will send to my installer in the morning. From my limited understanding it would appear we could possibly create two separate 3 kW circuits, which is fine, rather than combining to make a single circuit of 6 kW’s.
Our property’s earthing arrangement is TT.
Will the guide contents be sufficient for my installer or have I missed something important?
You definitely do not want to combine the output of two inverter EPS circuits. Bad things happen, things go bang.
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Thank you, certainly removes any lingering doubts. 
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Reading the Inverter Installation maual on page 8 is a diagram under the heading Full Property Backup which I take to mean that all available circuits can be kept alive and utilised when needed providing no more than 3600 Watts are drawn at any one time! Am I correct that this would include our solar system and Indra V2H unit which, if so, is absolutely ideal as the batteries could then be topped up during daylight hours and or the house to run off the EV battery if necessary.
Apologies if I am being overly optimistic here it’s just that my installer is suggesting I need to separate out a couple of circuits from existing consumer unit and run them only ignoring PV and V2H.
Please excuse my naivety here but if at all possible I really shoulld like to keep the house alive in it’s entirety rather than simply a couple of circuits. Any advice offered would be very much appreciated.
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Hi Adrian,
I think have the same setup as you; 2x 3kw ac coupled inverters with 2x 8.2kwh batteries on each (4 total).
I have the EPS enabled and when installing, the sparky wanted to break out my circuits as yours is suggesting.
I, however, asked mine to connect the whole house and I would remain under the 6kw max if I have a power cut. Like you, I didn’t want to have to pick and choose what I might want to remain active, so I’ll just be careful in the event.
The only issue if I exceed the max power is I’ll trip the breaker off and will probably have to wait for a reset cycle. 3 years now and I’ve not had a power cut so can’t really comment on how effective it works!
Interestingly I was told at the time I could have a manual EPS switch and use the full 6kw, which I went for, or an auto-switch and only use 5kw. I have since spoken to GE who said that isn’t the case and an auto-switch should allow for the full power usage.
I do wish they did a larger inverter for ac coupled. I’m considering another two 3kw inverters with a battery on each, but my space is a little tight to do it and I still get the odd gremlin between the double inverter setup so I’ve no clue how >2 would work, if at all!
Good luck with your setup.
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Thanks Jimbo, yes same set up. I’m impressed you’ve had it in place for three years and with the full 6kW’s too as that would be my ideal. Any chance of a simple wiring diagram/layout! Apologies if that’s too much to ask, it’s just that currently we’re heading along a couple of circuits as easy to implement with the possibility of a whole house connect in a year or so.
As we plan to run the Hp’s off of one to cover heating and running an extension lead off the other, be it kettle, TV, microwave etc. But I’d love to keep PV and V2H alive which as you’ve experienced has been achieveable for some time.
Having not had to operate in anger in three years have you never been tempted to cut the supply yourself to check if it functions as it should!
Hi Jimbo,
I’m intrigued how your installer managed to connect the whole house as, unless there are two separate 3kW circuits, my understanding is that the two inverters could not be synchronised so unable to form a single 6kW supply. As TX200 stated earlier if they do then bad things happen so please be careful and if necessary consult your installer before testing!
Finally got the system wired in and functioning with the two separate 3 kW circuits. As our two, 2 kW HP’s were on the same circuit and had been that way since install without issue I had assumed they would continue to do so. Unfortunately not, for while one would function on it’s own as soon as a second started it would trip the circuit out no matter for how long or in which order the first came on. I’ve now put the HP’s on separate circuits to avoid the possibility of this happening in future be it on normal day to day running or during the course of a power cut.
So EPS now in place as an insurance policy should the worst occur.
If I wanted to install a standalone mains socket on the EPS output, can this be done without the need for an installer, or does it require configuration that isn’t possible for an end user?
Hi Dave, I am afraid that’s a question only someone from Giv can answer.
While I was able to complete all necessary circuitary beyond the Inverter my installer made the connection to it. I am not aware that any configuration was necessary but someone with more knowledge here might advise otherwise.