mortgage retention advice for current installation upgrade

[Engineer54]

So why are you trying to fit a 50A or higher MCB/RCBO?

Yep, a 40A MCB will be more than adequate for that size of shower!!

 

[walkthenrun]

So why are you trying to fit a 50A or higher MCB/RCBO?

a 45A would be adequate for now but i would in the future like to upgrade the shower to a 10.5kw but if i was going to upgrade the lot now i would put a 10mm cable in and change the pull down d.p to a wall mounted one and also get the correct breaker from the initial installation

 

[walkthenrun]

So why are you trying to fit a 50A or higher MCB/RCBO?

6mm 47A clipped direct and then voltage drop wouldnt have an advers affect over that distance, so a 45A c.b would be acceptable
8500/230=36.96A so 37A maximum current flowing
on 10.5kw/230=45.65A
10mm cable clipped direct 2c0re 63A 3core is 57A

 

[Spoon]

I dont mean this in a sarcastic way, but what is the fascination with people wanting to get a bigger and bigger showers. What is wrong with a 8.5kw?

 

[Spoon]

6mm 47A clipped direct and then voltage drop wouldnt have an advers affect over that distance, so a 45A c.b would be acceptable

Until you want to upgrade your shower to 10.5kw.

 

[Engineer54]

I dont mean this in a sarcastic way, but what is the fascination with people wanting to get a bigger and bigger showers. What is wrong with a 8.5kw?

Why anyone would ever need a 10.5KW shower, i will never know!! I'm using a 4.2KW shower over here and it's more than just adequate for a good hot shower!!

 

[Spoon]

Why anyone would ever need a 10.5KW shower, i will never know!! I'm using a 4.2KW shower over here and it's more than just adequate for a good hot shower!!

Maybe they want to re-enact a scene from Rambo, when he is in the police station...

 

[Engineer54]

Bet they don't sell many 10.5KW showers in France, where it seems the average domestic supply is limited to 12KVA!! ...lol!! ....It's only the daft British that want to be one better than the Jones next door!!! lol!!

 

[Spoon]

OP: Id be more concerned about the 2.5mm cable going to MCB 1 (60A) for the outside lights than the shower cable.

 

[Engineer54]

OP: Id be more concerned about the 2.5mm cable going to MCB 1 (60A) for the outside lights than the shower cable.

That cable can be slipped into the downstairs lighting Breaker. Obviously installed by a DIY'er that one!! lol!!