What would fit this DB

[chris day]

Without changing the fuse board what would be the best way to get a 50a supply to a shower.

I was hoping If I could not get an RCBO just an MCB to supply an RCD unit.

Wishful thinking

 

[westward10]

What type/make of board?

 

[Rosco]

Any pictures?

 

[Taylortwocities]

Without changing the fuse board what would be the best way to get a 50a supply to a shower.

Keep the existing fuseboard and add a separate 'mini' CU that has an RCD and an MCB in it (aka shower unit)
Or is that not what you are looking for?

 

[Spoon]

Keep the existing fuseboard and add a separate 'mini' CU that has an RCD and an MCB in it (aka shower unit)
Or is that not what you are looking for?

Does that comply to amendment 3 mate?

 

[Taylortwocities]

That was just a stock photo. My computer does not have to comply with AMD3. Other units are available.

 

[chris day]

Keep the existing fuseboard and add a separate 'mini' CU that has an RCD and an MCB in it (aka shower unit)
Or is that not what you are looking for?

What type/make of board?

Hmm the pic didn’t attach to my post, there we go this is the board

 

[chris day]

This will be the best way to go if I can’t fit anything in the board, I don’t think I will as it’s an old 3871 type MCB.

 

[westward10]

They did produce single pole rcbos for those and modern ones will not fit and I am not sure they went up to 50A, probably 45A.

 

[Dave OCD]

I'd definitely fit a separate stand alone 1 way RCD unit with appropriate MCB, they're not too expensive but the metal ones do need a bit of space.

 

[telectrix]

what wattage is the shower?

 

[Octopus]

The OP should be advising the customer to plan for a new CU .............

 

[Dave OCD]

Yes good point, no RCD protection at all as it is.

 

[Octopus]

With that age of CU , wonder what the earthing and bonding is like?

 

[Dave OCD]

Probably fully compliant with the 14th edition.

 

[Taylortwocities]

You won’t even get a 50A MCB for that board!

 

[Octopus]

You may find a 45A

Wonder what Kw rating the shower is?

 

[chris day]

what wattage is the shower?

10.8 KW

 

[chris day]

With that age of CU , wonder what the earthing and bonding is like?

All is in place

 

[Dave OCD]

10.8 KW

I do my best to steer clear of showers that powerful Chris, at the more realistic voltage of 240 that's 45 amps, even 10mm cable if running through insulation can get hot , I'd stick to a maximum of 9.5kW but that's just me.