Companies like yours, should be very proud of the clarity and the highest of standards you maintain, well done all at OVAL, may it long continue for you !
Really excellent video thank you. Do you know of any drone service that could scan my roof please for available area? Sorry to be off-point and thnak you.
Lovely video thanks. Those solar skirts look good enough to stop pigeons, but with that style roof tile surely smaller birds can get under the skirt? The wire mesh bird protection doesn't look as snazzy, but it can be trimmed to eradicate any bird entry points. Interesting that the customer wants 10kW discharge, but only has battery capacity for under 2 hours at that rate. Presumably he has something spikey that needs a short burst of high power. We have a similar system (7kW solar, 2 x SE 9.7kWh batteries and a SE 6kW inverter). Even if I wanted to export to make best use of Octopus Flux, I would still drain a full pair of batteries in 3 hrs. I do concede that it gives him expansion capabilities. Thanks for sharing this slightly unusual installation.
Each battery can only delivery 5kw maximum discharge which means with an 8 or 10kw inverter you would be able to discharge 5 from the battery and top it up with solar to the 8kw or 10kw inverter rating. However with no solar you would only be able to discharge at 5kw, this is a battery constant not the inverter 👍
That 7kW or 7.3kW export cap - is that per hour or total per day ??? 14 x 430w = 6,020 peak which you rarely see, ok maybe briefly in summer at midday. So it is unlikely you will hit the 7kW/7.3kW export cap for the DNO to keep their phases within range/tolerance (Probably export more if exporting 3 phase as it doesn't risk unbalancing phases at sub-station) But DNO says cap is 7kW/7.3kW so to comply set the export limit as required But I do wonder is this a daily limit or an hourly limit ???
@@alsmith20000 that's what I assumed, but as said the array can't output that even on a good day. Still they stipulated a 7.3kW export limit, maybe to comply with regulations 7.36kW per phase on G99 as I guess the 2 inverters could dump 10kW from the batteries now. In any case the inverter capacity is now capped to 7.3/7.36kW as per G99
Hi thank you for an interesting video. I have recently invested in a solar system its got a 13 kwh hanchu batteries linked to a lux power 7 kwh inverter. I am now thinking about wind turbines to supplement my energy requirements. Q is it possible to run another inverter into my domestic supply from this wind turbine. The reason for this is because lux power won't allow me to add a turbine to my system they say it will invalidate my warranty. Regards Martin steele
Hi martin, thanks for watching. In theory yes this is possible. You would need DNO approval for the new inverter for the wind turbine. You may also want to see if there is a way to get the LUX system to monitor the wind generation so the battery can charge from it. This may just happen naturally as the LUX's grid clamp will pick up any additional power going back to the grid from the wind turbine.
@@OvalRenewables Hi thank you for the reply, we you say my lux system can monitor it I am planning 2 completely seperate systems???. Can my lux power inverter do this. And dnos how do I go about getting this the installer did this for me and I am afraid they don't want anything to do with wind turbines. Do you think lead acid is good for this purpose. Regards Martin steele
The customer hasn’t consented to us publishing the cost of the installation so I can’t be specific. However I would use a budget of £25k - £35k depending on the installation specifics.
I have 2 inverters too, but only 1 battery. I found the voltage rise caused by one inverter caused the other one to turn off during peak generation times. To export power, an inverter must raise the voltage to just over the mains voltage which can impact other inverters nearby causing a VAC error. I had to raise the cutoff voltage on my second inverter to prevent this from happening. It would be interesting to learn if you had this problem. It is a common issue in streets where there are multiple inverters.
I’m going to go down this route. Currently I have two SE batteries and one 5kW inverter. I’m going to have another 4kW of panels installed (planning submitted) along with a 6kW inverter and backup interface. I want to be able to charge a car at full whack without drawing anything from the grid. The ability to create 11kW of AC will be a big plus come the summer!
Can I ask why if the client wants to possibly add a Solaredge EV charger and a hot water diverter why you did not spec the newer homehub inverters? They allow seamless integration of these components into the ecosystem and full functionality and control through the app?
Thanks for the comment. We have the client the option to have the hub inverters but the only advantage over these ones is the backup capability. The customer didn’t want this on this occasion.
Hi John, the customer did not want us to reveal the exact cost of the installation within the video but if you were interested in a similar system we could take a look for you 👍
Can I ask is there any conflict between having two hybrid inverters with a battery on each, are they both ct clamped at the grid or is one a master through rs485 ? If there is 4 kw surplus which inverter and battery gets the surplus?
Correct me if I am wrong. I am just trying to understand. Your explanation about why two inverters vs one 10k inverter has left me a bit confused. If I had 1 10k inverter with two of those batteries that are each capable of delivering 5k in a parallel battery configuration which is essentially load sharing. Are you saying that I could not pull 10k out of those two batteries in that setup
Thanks for the question. Not problem, so with two batteries in parallel on one 10kw inverter the discharge rate would still be 5kw but your storage capacity would increase each time. To allow you to get 5kw discharge out of each battery they have to be split onto a 5kw+ inverter. So to summarise if you had two batteries into one inverter then you would only get 5kw discharge but 20kwh storage, with them on two 5kw inverters you would get 10kw discharge and 20kwh storage
Great video as always Sam The explanation of why there’s two Inverters and reasons behind it is spot on and help clarifies that l having two also. It’s all about future proofing Two Questions: Would it be overkill to have say two 8 or 10 KW Inverters ? How long is the 7.3KW Export Limitation for ? Is that at time of Export, an Hour or Day for example ?
7.3kW is the maximum power they can export at, it's not timed, if they had the power they could do it 24 hours a day. I have 8kW inverter on my batteries and garage solar, along with 3.68kW on my original Solaredge install. I also got DNO approval for the full 11.68kW export capability.
A bit dissapointed to see you wandering around on roof tiles without any type of crawl boards. No roof tiles are designed to walk on and it's quite possible you have cracked some roof tiles without knowing it. I have always thought you were very careful on doing things right bit clearly not this time. Bit of a shame to see it
Hi John, thanks for the comment. Whilst I am sure I will not be able to change your mind I would like to give it a go. These roof tiles are extremely strong and it is common for solar installers and roofers to walk on the tiles. Clay tiles and slate are a different beast as they are fragile. All of these tiles are in good condition and are not cracked. Using crawl boards on an installation would not be practical and introduces another hazard when working on the roof. Thank you for your comment however.
@OvalRenewables hi. I know all installers do it but my friend is area manager of one of the largest roof tile suppliers in the world and as I have fitted solar in the past she makes a point of telling me the fact that they are not designed to be walked on and crawl boards should be used so what I did was got a couple of 10 ft boards and screwed and glued some pieces of battery to it spaced out to make steps and put them up the roof or once you have the bottom row of hooks on put the boards horizontal on them to stop it sliding down and then move it up as you go and use a roof ladder. So not convinced as I have done it myself.
Hi John, we obviously have differing opinions which is absolutely fine, that’s what’s sparks open discussions. However as a company we stand by our install and the way it is installed. If the customer was to have a leak due to a broken tile under the array then we would stand by this too. I’ve worked with these tiles for over 13 years and so have a wealth of onsite experience when it comes to what they can take. This may differ from selling them. Whilst I agree they aren’t designed to be walked on this does not mean they aren’t strong enough to be walked on. I respect the debate however and appreciate your comments
@OvalRenewables Your not the only one I have seen doing it and I have commented to them but seems no one wants to go the extra mile for the customer. I have always been impressed with your standard of work and like the fact you use the Alpha battery sometimes which I am also an installer for. I just fitted one and did have a bit of trouble with it bit Andy Bailey at Aloha got to the bottom of it very swiftly . Shame you won't give it a try with crawl boards but it is your decision. I am getting to old for climbing around on routes and am looking for descent installers to save me the bother ad I often get asked about solar and batteries and heat pumps
