RCBO for solar

[extremeds]

you shouldnt use an RCBO when connecting an SSEG, unless they disconnect the neutral too, i.e are double pole. of which most are not. (read http://www.esc.org.uk/fileadmin/user_upload/documents/industry/best_practice/BPG3_08.pdf ) sunny boy recommend using a 100ma RCD anyway, and if its a TL or HF id use a type A which wylex do for 50quid

 

[Markc]

id use a type A which wylex do for 50quid

Think that should be Class B RCD.

 

[extremeds]

Yes I agree normally type b. Sunny boys thou have inbuilt earth fault protection and by design can't feed dc currents into an ac circuit and suggest a type A 100ma

 

[dpelec]

Rcds on a pv system should disconnect both the line and neutral conductors so only use a double pole not a RCBO!

 

[Worcester]

@dpelec - Where does it say that?

 

[kevp]

Hi.
When I did my MCS course I asked about the RCD implication.
I was told single pole is fine & tripping mechanism had to be DC sensative.

 

[Worcester]

DC sensitive - so that makes it a Type B then as a Type A or AC will flood the core and stay permanently locked on with DC leakage currents, and so in accordance with 133.1.3 it will be outside the scope of it's standard.

Just read that clause and see what you're making yourself liable to if you use a Type A / AC where a Type B is required.
(Life isn't that simple though ...)