10KWp system over the phases

[saint]

Hi
I'm about to quote on a 10KWp system, which will be one of the first of my own as i am newly MCS accredited. I'm getting to grips with most of this but i have a couple of questions
If i split it over the 3 phases can i do this install (all 3) as G83? If so then i guess i can do 3x 4KWp. So what FIT bracket does this fall in? <4KW or 4-10KW?


Thanks all

 

[Markc]

You can split it over the three phases if your DNO allows it. The FITs would be at the 4 - 10kWp level

 

[saint]

Thanks for the reply.
So i take it i need to contact the DNO prior to install due to the total size being over 4KW even if splitting?

 

[SolarCity]

G83 allows up to 16A a phase. As far as the rules go, you shouldn't even need to contact the DNO till you've installed it. Having said that, it's never a bad idea to speak to the DNO.

 

[saint]

Ok, as i thought, only need to contact DNO before installation if G59. So i can split over 3 phases and install as per G89. So is it actually 3680W (16A) max per phase or 4KW? This seems a bit of a grey area, or am i wrong?

 

[dansk]

All you need to do mate, is phone the DNO concerned and cover your ---, as discussed before on this forum you may be able to split over the 3 phases and notify under G83, but wouldnt you rather be safe than sorry for the sake of a phone call?

In my experiance the DNO dont bite, and if your unsure of which DNO it is look here National Grid: Distribution Network Operator (DNO) Companies

 

[TedM]

If you do 3 x 4 kWp then you have 12 kWp TIC which will be in the >10 - 100 kWp FiT band at 31.4p per kWh.

 

[SolarCity]

Yes, 3680w per phase is the limit.

 

[SolarCity]

Although DNOs have different ways of dealing with things, most will allow more than 3.68kW under G83.

 

[Markc]

Although DNOs have different ways of dealing with things, most will allow more than 3.68kW under G83.

EDF used to but now they are UK Power Networks the last time I spoke to them (Forget it's the same guy as when it was EDF!!) they will not let it go higher. Think a few installers in the UKPN area may be court out. I have to speak to them again in a few weeks time so it may well of changed again!

 

[SolarCity]

EDF used to but now they are UK Power Networks the last time I spoke to them (Forget it's the same guy as when it was EDF!!) they will not let it go higher. Think a few installers in the UKPN area may be court out. I have to speak to them again in a few weeks time so it may well of changed again!

What have they suggested for >3.68kW systems?

 

[Markc]

what have they suggested for >3.68kw systems?

g59/1!

 

[SolarCity]

That's crazy! They have effectively priced any >3.68kW system out of the market.

 

[Markc]

That's crazy! They have effectively priced any >3.68kW system out of the market.

Yep! I have heard they asked for £120 for a survey and agreed to the installation there and then! So I think it's a money making scam at the moment. Why pay a penny for a visual survey to say yes OK?

As I say things may well change again. For UKPN it's early days.

 

[SolarCity]

As long as the £120 survey is all they ask for then all should be good. If the relays and testing are insisted on then the costs will be ridiculous.