what size breaker should my gas boiler be on?

[treebor90]

what size breaker should my gas boiler be on? its on a 6amp at the minute

[grumbas]

I'm not a spark but that sounds about right, you'll probably find it's connected into a 5A fused spur at the other end.

[Ferg]

System is often fused 3A.

[Onzlouk]

Ferg said:

System is often fused 3A.

Yep, fused spur 3A

[treebor90]

many thanks, does it need to be on an rcd as well?

[CIS121]

treebor90 said:

many thanks, does it need to be on an rcd as well?

If you don't have RCDs on your consumer unit, fitting a boiler isn't going to require an upgrade to them

[Kevp]

treebor90 said:

many thanks, does it need to be on an rcd as well?

If a new system is being wired it will need to be RCD protected. If the circuit in the board is RCD protected then all is well. Otherwise an RCD needs to be fitted at the start of the new wiring (with a few exceptions).

If your just replacing components then not an issue, unless unsafe (generally).