Dillsue

Last few pages from fig 6 onwards show the varying voltage current. The voltage looks very low as the curves are for a single cell, not a full panel!

Easiest way to add the bigger panels is to wire them to a separate MPPT input on your existing inverter. Next easiest, but may not be ideal, is to get someone to calculate the output for the various panel combinations to see if they can be wired to your existing inverter, if no spare MPPT input. Next is to replace your inverter with one that has a spare MPPT input. Lastly add optimisers/micro inverters which allows you to mix and match panels freely

DNO says they're waiting for a G98??

The receptionist is wrong....G98 is a mandatory notification. As professional installers they should know that. If your expecting to get export payments then the installer should be MCS registered, know what they are doing and have included for DNO notification. For a professional outfit it should take no more than half an hour to knock up an SLD and submit the commissioning doc. Take it up with the principle of the business to put in place some staff training!

Depends if the battery output is regulated by the inverter and if theres PV hooked up to the inverter. If theres 6kw of PV hooked up to the inverter and the battery can separately output 5kw then total is 11kw potential export. Power station is your premises with one or more generators within the premises.

?? For our G99 there was an application form to complete, a single line diagram to compile and a G99 cert for the inverter to submit..... same as the online process above?? Yours may have been more complicated as you've got quite a complex system, but the standard G99 application is straight forward. If the online system looses data quite easily then the non online application sounds easier??

Have a read of the ENA G99 guidance. If it doesn't include a requirement for MCS then SP shouldn't be asking for it.

SPEN are the DNO for southern Scotland and the old MANWEB area covering some of the north west and north Wales. Google "DNO network map"

OK. Maybe let them know that their colleagues in the Prenton engineering office dont(didnt) ask for MCS, not even a mention of it!

Absolutely. The comment was clarifying that micro inverters can interface to a battery, same as any inverter can

I believe Enphase do a battery to integrate with their micro inverters

No requirement for MCS with SPEN MANWEB when we submitted our G99 a couple of years ago. Have you been discussing export payments with SP? It's the only reason I can see them directing you down the MCS route if you've told them you want to claim SEG??

Batteries?? They can't export to the grid so no ENA approval needed. Its the inverter that needs to be ENA compliant

Try CEF for your kit. They were selling longi 405s for £52 earlier this year yet cheapest panel on the green2go site seemed to be £70+

For clarity- don't rely on an inverter shutting down as a safe way to isolate any inverter/generator/battery, ever. There's loads of old/cheap and potentially non compliant inverters around any or all of which can go faulty. Lockable AC isolators are specified for a reason throughout the world of electrical power. Of course you can defeat a cheap lock with a hacksaw/bolt cutters/sidecutters, but thats a deliberate act. Putting a fuse carrier back in can be done inadvertently and may not be questioned by whoevers trying to get the supply back on. On the other hand taking a hacksaw to a lock on a locked red and yellow isolator would set alarm bells ringing for anyone with even the smallest degree of electrical competence. Anyone with basic understanding of electrical working can come up with a way of working giving a level of safety that suits them and their appetite for risk. Anyone taking guidance from others on an internet forum should use the installed isolators and lock/cable tie them off if there's anyone else around while you're working on isolated kit.

Yep way easier.......but that's not the way industry works as its not classed as a positive isolation! Nothing to stop anyone inadvertently putting a spare fuse from the van back in. With lockable isolators theres a positive action with a hacksaw required to remove a lock so negligble scope for accidents. Not applying locks was the chargehands call but almost certainly breaching company procedures!!

Your DNO wants to know where the generators are isolated so they can isolate them if they're working on your supply. You probably need a lockable AC isolator on the Luxpower unit and a note stating where in the house the isolator is. A copy of the drawing should be pinned up where the DNOs incoming supply/cutout fuse is located. When our DNO upgraded our transformer they checked the drawing and checked both systems were shutdown although they didn't lock off the isolators. They do actually use the info you give them!

The connections for the 3 way valve only show connections to earth, neutral and auf. Nothing connected to zu

Are you sure it's 5201Z? 6201Z is a common bearing and is the sizes you quote. When you sort out the size you need buy quality brands like SKF, NSK, Timken etc. For the few extra £ you pay, they'll last way longer than cheap s**t off ebay

If its grid connected it needs to be approved and on the ENA database even if set to zero export. I think the Wallbox products are grid connected but maybe you've seen something that isolates the house from the grid??

And support! Start mixing and matching and you might struggle with help from SE

That's it exactly. Check the inverter carries a G100 approval which I think it should. Hook up the energy meter and CT clamp to your supply cable and configure the inverter to your export limit. Technically, to be G100 compliant, the export limitation settings should be password protected by your installer to stop you as the user tinkering!!

Have a look on the ENA type test database- there's nothing from Wallbox approved for grid connection

Not sure the Quasar 2 is released for use yet, outside of trials??

On the subject of RCDs, dont forget they are secondary protection to a properly designed and installed electrical system. Primary focus should be on a decent install.