Is 4mm cabling sufficient if I increase my battery storage?

[user 36129]

Hi,
So I'm about to get a 7.4kwp system of 20 panels with a solis 5kw inverter and pylon us5000 4.8kwh battery. I read somewhere that if I want to increase my batteries I'd need 10mm cabling, is that true or will the 4mm cabling be sufficient?

Many thanks in advance for and advice

 

[binky]

Hi,
So I'm about to get a 7.4kwp system of 20 panels with a solis 5kw inverter and pylon us5000 4.8kwh battery. I read somewhere that if I want to increase my batteries I'd need 10mm cabling, is that true or will the 4mm cabling be sufficient?

Many thanks in advance for and advice

It's roughly 4 amps per kw, so a 5 kw inverter is 20 amps and 4 mm cable is good for 32amps. Personally I would prefer to see 6mm, because of the regular and potential long duration of the loads.

 

[user 36129]

It's roughly 4 amps per kw, so a 5 kw inverter is 20 amps and 4 mm cable is good for 32amps. Personally I would prefer to see 6mm, because of the regular and potential long duration of the loads.

Thanks Binky. So in essence I could add extra batteries as it's the size of the inverter that's the constraint?

 

[binky]

Thanks Binky. So in essence I could add extra batteries as it's the size of the inverter that's the constraint?

Yes

 

[user 36129]

Yes

Thanks, to both replies