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Discussion Starter #1
Looking to get a Zappi installed on a UK house. Untethered preferably.

The Zappi will be on the outside wall of a detached garage. The garage has an existing supply with a 63A breaker. The distance from the garage consumer unit to where the Zappi will be would be around 7-8m (cable run length).

Bought the house new and the 63A breaker is original. I guess that this means that the cable to the garage could carry 63A as I think the principle is the breaker protects the cable (is that right?). I have another 10mm armoured cable run to the garage just in case though.

Had one quote so far for £1,000 after the grant has been taken off. This is based on connecting that additional cable. The quote does not include Harvis for the CT clamps. Instead it will take a few cores from a spare data cable that is already installed from the house to the garage. According to the quote, the CT clamp for the main supply has to be hardwired because of a recent change in regulations requiring a grid limiter to be fitted (is that right?).

Does £1,000 sound high or not? What have others paid for a Zappi II?
 

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Discussion Starter #2
I should also say that we have solar so it would be a system that includes measuring the solar current.
 

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I was quoted about a £1000 with no OLEV grant for the Zappi: that price with no grant sounds high. I already have a dumb EO charger so the internal cable for the Zappi is already there.

I also a 100a fuse on the feed in from the network and have a 63a fuse in the garage with a 20m 10mm cable from the main consumer unit but originally they suggested winding down the charger for various reasons: mainly the cable gauge. So it only gives me 6kw not 7kw.

I also have solar and when the sun is shining I just connect my granny charger. 2-2.5kw free!
 

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Discussion Starter #5
£1000 is about right, I did get the OLEV grant when I had it fitted, so had to fork out around £500 (Olev grant was £500 at that point) I did get a few quotes, and they were all in the same ballpark figure
So £1,000 after the grant has been taken off is a bit high then.
 

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Discussion Starter #6
I was quoted about a £1000 with no OLEV grant for the Zappi: that price with no grant sounds high. I already have a dumb EO charger so the internal cable for the Zappi is already there.

I also a 100a fuse on the feed in from the network and have a 63a fuse in the garage with a 20m 10mm cable from the main consumer unit but originally they suggested winding down the charger for various reasons: mainly the cable gauge. So it only gives me 6kw not 7kw.

I also have solar and when the sun is shining I just connect my granny charger. 2-2.5kw free!
Hi. Did they fit a new cable to the garage as part of the installation or was that using the existing feed?
 

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Hi. Did they fit a new cable to the garage as part of the installation or was that using the existing feed?
On my original install They used the existing feed.
 

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Looking to get a Zappi installed on a UK house. Untethered preferably.

The Zappi will be on the outside wall of a detached garage. The garage has an existing supply with a 63A breaker. The distance from the garage consumer unit to where the Zappi will be would be around 7-8m (cable run length).

Bought the house new and the 63A breaker is original. I guess that this means that the cable to the garage could carry 63A as I think the principle is the breaker protects the cable (is that right?). I have another 10mm armoured cable run to the garage just in case though.

Had one quote so far for £1,000 after the grant has been taken off. This is based on connecting that additional cable. The quote does not include Harvis for the CT clamps. Instead it will take a few cores from a spare data cable that is already installed from the house to the garage. According to the quote, the CT clamp for the main supply has to be hardwired because of a recent change in regulations requiring a grid limiter to be fitted (is that right?).

Does £1,000 sound high or not? What have others paid for a Zappi II?
Do you mean the main isolator in the garage consumer unit is rated at 63A, and that there are then other MCBs for protection of the individual circuits? If yes, then the isolator rating tells you nothing other than it’s maximum rated current capacity, and the incoming cable could be any size to meet the loads of the circuits currently fitted. It could just as easily have been a 100A isolator for example, but it does not mean the supply cable fitted will be able to deliver that. As you have a 10mm cable ready in any case it should not be an issue for you either way though.
 

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Discussion Starter #9
Do you mean the main isolator in the garage consumer unit is rated at 63A, and that there are then other MCBs for protection of the individual circuits? If yes, then the isolator rating tells you nothing other than it’s maximum rated current capacity, and the incoming cable could be any size to meet the loads of the circuits currently fitted. It could just as easily have been a 100A isolator for example, but it does not mean the supply cable fitted will be able to deliver that. As you have a 10mm cable ready in any case it should not be an issue for you either way though.
Ah. So it is just a switch. Got it. I guess the breakers are the items that protect the cable.
 

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Ah. So it is just a switch. Got it. I guess the breakers are the items that protect the cable.
The usual arrangement for a garage is a breaker in the main house consumer unit rated at xxA to protect the cable house to garage. Then in the garage often a main switch to allow someone in there a way to switch it off and then some arrangement to split the circuits within the garage into lights and power. This could be a small board with MCBs or just a small fused connection unit for the lights, depending on how the gauge of the house to garage cable compares with the (usually) radial for the sockets within the garage.
 

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The installer will look at the gauge of the house to garage cable but also estimate or measure its length. They have tables to use to work out the safe current carrying capacity with acceptable voltage drop which is a function of the gauge, length and also the "installation method" - eg if its clipped on the surface or buried in insulation.
 

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Discussion Starter #13
The usual arrangement for a garage is a breaker in the main house consumer unit rated at xxA to protect the cable house to garage. Then in the garage often a main switch to allow someone in there a way to switch it off and then some arrangement to split the circuits within the garage into lights and power. This could be a small board with MCBs or just a small fused connection unit for the lights, depending on how the gauge of the house to garage cable compares with the (usually) radial for the sockets within the garage.
Right, got it. Thanks.
 

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No I think it's about right. The quotes won't be the same amongst posters here because each house is different which is why the installers often ask for photos and video of proposed install. Some are standard installations. I was quoted about £900 after OLEV grant taken off for a Zappi by Smart Home Charge. Went with Ohme wall charger in end. It doesn't currently have option to preferentially use your solar energy but that is a software update which they say is coming.
 

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I think the lack of solar utilisation is the one thing holding me back on the Ohme... er... front. (Ahem):oops:

Anyone had a forecast on when such functionality might be available?
 

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Went with Ohme wall charger in end. It doesn't currently have option to preferentially use your solar energy but that is a software update which they say is coming.
Presumably not just software, i.e. it also needs a current clamp around your grid connection so it can tell when you're exporting solar (or does it already have that)?
 

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Zappi 2 quote (untethered).

Just been quoted £2K plus VAT to install, plus to run a dedicated 3 pin socket from the CU as a back up, and put in place missing earth bonding for the house incoming water supply (external run). There is already a Pod point, so it is a swap not full new install.

Any thoughts, I’ve not employed an electrician before, but sounds a lot? With the OLEV grant (we have 2 EV’s) I was thinking under £1K for the charger, and maybe a few hundred more for the other jobs....

thanks
 

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Have you considered if the Zappi would ever pay back as your car will use solar with or without one. Other options like the Ohme, as it is such good value, to optimise TOU tariffs as solar will only be any good for low mileage in the sunny months. All depends on the house/your needs. For example, at my last house the Zappi would have been an expensive toy as the ASHP/DHW diverter would have nicked the bulk of the solar output. Cheers
 
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