Fuse size?

[clematis432]

So if boilers are to have their own protection fitted internally by the manufacturer, why is it that the last boiler I took apart had no fuse apart from the 3A in the plug it came with? I'm not doubting what any of you are saying, but I find it hard to understand how the componets would be protected if you say they are not built to handle 3A and yet the only protection they have is 3A?

You make a pertinent point regarding protection, (or lack of protection in some cases) of boiler PCB,s. The 3A fuse that is required in the FCU or plug top, in my opinion, WILL protect boiler components, if there is no manufacturer,s protective device, but probably not the PCB. I don,t understand why a boiler manufacturer would not include a say, 100mA fuse to help protect the PCB(would cost them little) Could it be that they make a lot of money from replacement PCB,s Gosh, shouldn,t be thinking that.

 

[D Skelton]

That question is best asked to the boiler manufacturer, rather than to the forum.... It'll be interesting to see what they have say too!! ...lol!!

Haha, I'd love to, but I do have a life. Last thing on my mind of an evening is getting into an over the phone debate with a boiler manufacturer!