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This is the responce from the instlation guy today I would like to respond to your on-going problem of your inverter

No idea, is there any way of checking the Inverter for limit ---------- Post Auto-Merged at 21:45 ---------- Previous post was made at 21:15 ---------- View Post I dont understand ? How long is the AC Run from the Inverter to the DNO (Thats the electric boards) supply meter / incoming supply...

Thats good to know.........

[quote name='Andy

Thats GREAT, thanks for your help...........

Unfortunately he's only with NAPIT does it still apply

NO but he is desperate to try ---------- Post Auto-Merged at 20:21 ---------- Previous post was made at 20:15 ---------- Can see your confusion, but the new length of cable will be 70 meters, would rather get the right calculations from here then I know them to be right

The installation guy came today, he slowly came round to the idea that to keep the peace he would consider changing the cable(only under pressure from the information gained on the forum, still reckons the inverter is set up wrong though) I have offered to half the cable cost. Putting the cable...

Thanks for that ---------- Post Auto-Merged at 17:11 ---------- Previous post was made at 17:06 ---------- The instilastion guy is comeing Tues I will give him his chance,I will keep you posted, I live 5 mins from Ormskirk,Burscough,

Sounds like a good idear ,hale way between Southport & Liverpool ---------- Post Auto-Merged at 20:32 ---------- Previous post was made at 20:31 ---------- Sounds like a good idea ,half way between Southport & Liverpool ---------- Post Auto-Merged at 20:33 ---------- Previous post was...

What should I do?

Yes

What do I say to the installer as he does not take me serrious

Is, PV should not share a circuit with anything else, a MCS or REAL,specification ---------- Post Auto-Merged at 23:21 ---------- Previous post was made at 23:10 ---------- The 20m run from the house CU to the farm shop is 4core 6mm twined to make 2 x12mm , then it goes 130m to the barn also...

panels stp 250s-20/wd Array parameters 37.3v 8.63a I have pv commissioning sheet, NAPIT electrical certificate SSEG commissioning confirmation sheet,it goes solar pv, inverter , generation meter ,CU (in barn ) 130m cable ,farm shop ,20m cable, CU at house ---------- Post Auto-Merged at 23:01...

16 ,250w suntecs SMA 4000tl inverter coupled to my original 150m,12mm armour cable, he wants to come on tuesday ,what can I say about the cable ---------- Post Auto-Merged at 22:18 ---------- Previous post was made at 22:14 ---------- Yes,a farm shop,2 fridges, lights, till etc

I agree with all your comments about safty,the reason I need to know is the MCS installer has fitted the 4kwp system on my original cable, 12mm ,but now blames the inverter for triping out Ineed some reasons about the cable to say he is talking rubbish

So bearing in mind the % VD for PV what cable size do i need

The cable is single phase, armour plated, installed under ground,150m from inverter to CU, 4kwp system

Can you put 4kw through 150 meters of 12mm cable (4 core 6mm twined up)