Welcome to our Electrical Forum - We started out providing electrical advice just for the UK - But now we have specific advice for the USA too! - Register for free and share American Electrical Advice.

# 3 phase 10kwp system

Discuss 3 phase 10kwp system in the Solar PV Forum area at ElectriciansForums.net

Status
Not open for further replies.

#### bigsparks

##### Active EF Member
Hi All

We are designing a G83 10kwp pv system to go on a 3 phase supply, using an SMA Tripower 10000TL. When calculating max AC amps will it be calculated at 10000 / 415v = 24/25 amps? We are looking to install one 4 pole AC isolator.

Also what size tp mcb is is best to install.

Thanks

#### yellowvanman

Electrician's Arms
Hi All

We are designing a G83 10kwp pv system to go on a 3 phase supply, using an SMA Tripower 10000TL. When calculating max AC amps will it be calculated at 10000 / 415v = 24/25 amps? We are looking to install one 4 pole AC isolator.

Thanks
Thats not the way to calculate 3 phase currents. Assuming balanced

Current = Power/3/voltage
So in you case
10000/3/230 = 14.5A

Sanity check 3.68kW on 1 ph = 16A
3 x 3.68kW = 11.04kw @ 16A /phase

#### bigsparks

##### Active EF Member

So a 16a tp mcb will be suitable on this install then?

UK Power Networks are the DNO here and up until recently they had been advising 3.84kw @ 240v =16amp was ok, which after speaking to them a week ago appear to have moved in line with other DNO's and dropped to 3.68kw per phase.

Status
Not open for further replies.