There is a solar and EV charger connection point in the AIO gateway.
Is the EV charger upstream or downstream of the battery? By that I mean does the EV charger appear as load or is it wired so the EV charger doesn’t look like house load and won’t discharge the battery?
It doesn't have an EV point 'as standard', more of a space you have to fit your own breakers.
As such your free to choose where the supply comes from either monitored or not.
Beware however owing to how the AIO does its PV frequency thing (which will probably upset your EV) and also the load an EV charger imparts on the system (it'll usually be wanting to pull more than the AIO can deliver in island mode) the preference appears to be to keep it on the Grid side.
My hope was it was grid side and not monitored by the battery such that it wouldn’t get drained when charging on fast mode.
Trying to find a way I can use eco+ on the zappi during the day, but also not have the battery discharge when on fast.
It sounds to me that having it on the grid supply was what I wanted. Don’t suppose you know where it should be relative to the CT/energy monitor? I think unmonitored but don’t want it to cause issues on eco+ etc.
In the case of a long term power loss, then a 10A or less granny charger would come out.
Don’t suppose you have details of what is standard and not in terms of breakers/MCB/sure arresters etc?
So I have a bit of a disagreement on design (other electricians may have a different stance depending on how you read the regs) so here goes:
The supplied breakers themselves are just standard ABB, I believe System Pro which you can pick up easy enough (RS have them all should you need). You shouldn't really mix brands. That leaves space for another EM115 meter to monitor the EV on its own - this isn't particularly made clear that is the intention from the manual, so one would assume that the portal would be able to separately monitor EV load should you set the EM115 meter to say ID3/4/5 whatever. I have no problem with this bit, neither should your installer.
The parts I do are as follows:
There are live busbars scattered all over where you can pick up the spare supply. They even have spare holes drilled in them, which makes you think "great easy enough let's take the EV supply from there" however they are only drilled on protected gateway side, which seems daft as you'd then be at risk of overloading the AIO, weird things happening with frequency etc as I mentioned before.
To fit it to the grid side you have 3 options -
1 drill the busbar on the grid side. Now I've seen the absolute a£se installers make of the simplest things, and these bars are in an awkward spot. But you can still see the "total" load of the house as there is a CT hiding on the input MCB to the gateway.
2 install a Henley block on the tails before you connect to the gateway. Easy enough but there's a catch. The gateway grid input has a CT monitoring incoming supply. (Black CT circled, the blue 1 is monitoring load going out from the gateway) so you'd not see the "actual" total house load reported at all anywhere. Not the end of the world I guess.
3 just reuse the terminals used for the EM115 meter supply - again this may be easier, but your breaking factory torqued connections (yellow circle) so this feels off. It also highlights one of my concerns with the design - the Em115 meters are just screwed to busbars with no protection at all beyond a 100A MCB feeding the bar. This is the same for both meters. (GE obviously think this is fine but come on, if I did that there'd be hell on) 
Other issue Preface: maybe I'm being too picky:
The RCDs themselves prefitted for AIO and PV inverter are type AC which depending on install method and the brand of PV inverter you attach adds another layer of complexity.
(And the AIO needs adding to the RCD Declaration document if that is the case to cover installers backs)
I hope you don't mind me pitching in a question. My Gateway / AIO was commissioned this weekend and seems to be working fine. I wanted my EV charger to NOT be backed up by the battery in a grid power cut, but to be able to draw from the battery/solar/grid when grid is connected, like any other load and to be visible as a load to the system. My installer has wired it to a port on the Gateway marked 'Bypass' and it does not appear as a load to the system. Its not clear if the EV charger is drawing from the grid or solar (definitely is not drawing from battery) in this configuration. So my question is in 3 parts.
1) Is my desired EV charger connection of draw from grid/battery/solar when grid is connected but disconnected in a power cut possible?
2) If this is possible, how should my installer configure it?
3) If the above configuration is not possible, will my charger still draw excess solar if on the bypass connection?
luckypants sounds like you've essentially got what I describes as option 2 (Henley block) but done via the spare terminals on the bottom of the bypass MCB. It's not a bad solution although as you've discovered you have no sight of that load anywhere other than your charger app? Did they also fit another GEM115 meter next to it?
Your EV charger will still see export on the bypass (you can see its just a bridge L & N on the MCB on one of the pics further up) provided that the charger CT clamp is around the incoming tails themselves. It should see any and all export and suck it up, but the AIO can't see it and therefore won't discharge into it. A quick test is to force a discharge from the AIO (this mimics a PV inverter doing the same thing) and see if the charger can see the export and starts to charge. (You may need to set the charger up to tell it to monitor, you don't state which charger you have)
The EV charger will be disconnected in a grid loss and not be available.
Note: you will also not see the "correct" total house load as it is wired the gateway can't see the charger load as part of the grid infeed so if you have a lot of power demand beware that whatever your currently shown as a house load you need to add the charger load ontop (just mentally note that so you don't go over your main cutout fuse)
Edit: if your installer has small fingers there is I guess the option to fish the black grid ct out from its current location to get around the whole not seeing everything issue. It's probably the worst one to try and get at though.
hoggy Thank you for your reply. Yes I suspect you are right I have your 'option 2'.
My gateway has two little meters, I suspect one for battery and one for solar inverter. (system is solis 3.6kW inverter / gateway / AIO)
My EV charger has no way of knowing about excess solar, without adding some extra bits to it (Wallbox Pulsar Plus) and it is not an issue per se - if I want to charge with excess solar I can break out the granny charger to soak up at 2.4kW backed up by the battery if house load goes up. My thoughts on the Wallbox charger were it would be nice to soak up excess solar and suck the battery with grid making up any shortage in total output from this, giving me normal charging. If the charger only gets excess solar and grid, that's OK with me as I'm still saving.
As for a forced export from the battery, I was thinking of trying this with my charger plugged into the car and seeing if my export meter on the smart meter goes up, as a way of proving the charger gets it rather than the grid. I'm not going to be too pernickety if I cannot get the kind of set up I wanted.
To answer my point above, the charger is seeing excess solar / battery discharge as my experiment with the forced discharge showed the EV charger took it all, without the grid export meter going up. So I was happy that I'm using my solar / battery to power the charger.
As for the EV charger being 'seen' as a load by the system, my installer returned and moved a CT clamp to detect both protected and unprotected loads. Now when my EV charger is in use I can see the load in the app and the system responds by supporting that load with the battery where necessary. To this end, when I have excess generation I can set the output on my charger to match and the battery will support the load when generation dips.
hoggy That's how mine is setup as I've had the Tesla and its "charger" for over a year. The week-old AIO seems to be working now after a firmware update caused some problems. Now I'm trying to figure out a way to charge the Tesla Off-peak without simultaneously draining the battery? No solar just EDF E10 with 8.5p/44p rates.
Set the AIO to charge during your off peak times, but reduce the charge as low as you want.
To do this, change charge mode from "solar" from "solar and grid", then times will be displayed that you can set
I do this on the app, as easier.
It will not discharge during the its own charge schedule.
luckypants Does the charger just appear in the total load or does it have an individual feed and icon?
Couple of questions for the AIO/Gateway...
1) Does the AIO wifi support WPA3, WPA2 in a WPA2/WPA3 mixed environment or WPA2 only?
2) Does the AIO support enterprise auth (No is ok, just helps with planning as it would be nice to lock down an external ethernet with RADIUS)
3)Does the gateway provide surge protection and if not, what is the best way to install it?
Can it go in the gateway, or is it a small box before the gateway?
Thanks
@luckypants don't suppose you can say which CT and to where can you?