AC Disconnect

[Mrjmegson]

Hey guys, sorry, this is probably a stupid question.

Do I need an AC Disconnect between my inverter and consumer unit?

I ask as the inverter can obviously be turned off, and it will be on a 64A RCBO in the consumer unit, both things are isolating it.

Cheers,

Jay

 

[Murdoch]

64A rcbo - for the PV - wow

 

[binky]

Yes, you need a local point of isolation, just like you have a switch for your shower and cooker, to meet regs. If your inverter is remote from the CU then you should have 2 isolators lockable in the off position. 1 by the CU, 1 by the inverter.

 

[Mrjmegson]

64A rcbo - for the PV - wow

That's what it says it needs in the manual.

 

[Mrjmegson]

Yes, you need a local point of isolation, just like you have a switch for your shower and cooker, to meet regs. If your inverter is remote from the CU then you should have 2 isolators lockable in the off position. 1 by the CU, 1 by the inverter.

Binky, by remote, you mean in another area, like the loft?

That's fine though, not a problem to put an isolator on it.

Cheers for the replies.

 

[Murdoch]

That's what it says it needs in the manual.

how many panels do you have ?

 

[Mrjmegson]

32 x 400W, 16 per roof, split into two strings, each roof with its own 6kw inverter and batteries.

 

[Mrjmegson]

Mine is the 6kw one at the far right.

 

[binky]

Binky, by remote, you mean in another area, like the loft?

Yep, if someone is working on the CU they need to be able to isolate the solar, likewise if in the attic working on the solar, you don't want to be up and down ladders to the CU to isolate.

 

[Mrjmegson]

Yep, if someone is working on the CU they need to be able to isolate the solar, likewise if in the attic working on the solar, you don't want to be up and down ladders to the CU to isolate.

Solar? You mean inverter? I wanted to know if I needed an AC isolator between the inverter and consumer unit.

The solar and batteries will both have isolators on them before the inverter.

 

[Mrjmegson]

Why are all the 63A isolators 3 or 4 pole? I only need 1 pole.

 

[binky]

Why are all the 63A isolators 3 or 4 pole? I only need 1 pole.

You need 2 pole minimum to isolate neutral and live.

 

[Mrjmegson]

Sorry, hit the wrong key, meant to say 2.