UK Replacement Unvented Boiler installed - Do I need a new Electrical Box?

SpudPower12 · Nov 15, 2023

Had a new unvented Boiler fitted as the old one had reached the end of it's life. Electrician mentioned that it might be worth replacing my fuse box and giving it a separate RCD. My fuse box appears to have 10 black switches and the 3 red main ones, was last checked by an electrician in 2020. Cost is about £600-700. Just not sure about the pro's and con's and obviously after buying a new boiler if I should do it sooner rather than later as the cost is a fair amount for me.

Anything that would help me make the decision would be gratefully received.

timhoward · Nov 15, 2023

Stick a picture of the consumer unit on here for better advice.
I’m not a fan of changing them unless there’s a good reason and clear benefits.

SpudPower12 · Nov 15, 2023

timhoward said:
Stick a picture of the consumer unit on here for better advice.
I’m not a fan of changing them unless there’s a good reason and clear benefits.

[ElectriciansForums.net] Replacement Unvented Boiler installed - Do I need a new Electrical Box?

MJPD29 · Nov 15, 2023

Unless you have an rcd in a separate enclosure then it would be worthwhile upgrading that board.

brianmoooore · Nov 15, 2023

Is this a UK domestic installation? Triple pole main switch and the rail mounted contactor give it a bit of a 'continental flavour'.

SpudPower12 · Nov 15, 2023

brianmoooore said:
Is this a UK domestic installation? Triple pole main switch and the rail mounted contactor give it a bit of a 'continental flavour'.

Yeah, it's in East Anglia, UK

timhoward · Nov 15, 2023

I have to agree, I'd also be suggesting there are benefits to upgrading that one.
RCD technology is a good thing and it's getting rarer to find no hint of it at all.

brianmoooore · Nov 15, 2023

That looks like a metal enclosure? Hager RCBOs are about £15 a pop, so about £150 for parts. Can anyone see why it shouldn't be upgraded rather than replaced?

Yozza19 · Nov 15, 2023

brianmoooore said:
That looks like a metal enclosure? Hager RCBOs are about £15 a pop, so about £150 for parts. Can anyone see why it shouldn't be upgraded rather than replaced?

No metal closing lid would be the obvious one I’d of thought

SpudPower12 · Nov 15, 2023

timhoward said:
I have to agree, I'd also be suggesting there are benefits to upgrading that one.
RCD technology is a good thing and it's getting rarer to find no hint of it at all.

Very much appreciate your advice, thank you. The flat was built about 20 years and I imagine it's probably the original board. I'll get it upgraded.

SpudPower12 · Nov 15, 2023

Yozza19 said:
No metal closing lid would be the obvious one I’d of thought

Sorry, my bad, It does have this swing door as part of it

timhoward · Nov 15, 2023

brianmoooore said:
That looks like a metal enclosure? Hager RCBOs are about £15 a pop, so about £150 for parts. Can anyone see why it shouldn't be upgraded rather than replaced?

As a cheaper option I'd agree you would at least get type A RCD protection with minimal disruption.
For about £150 more in parts you could have surge protection and RCBO's that switch the Neutrals too (Hager's don't) giving better isolation of future faults.

UK Replacement Unvented Boiler installed - Do I need a new Electrical Box?

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