MK Sentry consumer unit BS 5486 Part 13

[blup]

Good evening,

A few years back we had fitted a 10 kw electric shower but the plumber installed without upgrading the mcb (the old shower was about 6kw on a 32 amp fuse). Another electrician said the replacement mcbs for this unit are now obsolete. Is that correct and if so is a new CU required (there are four blank fuseways). The CU was installed late 1990 and uses all mcbs.

Thanks.

Blup

 

[wingcoax]

To start with, Is the cable 10sq mm? if not you should contact a registered electrician and look seriously at a partial re-wire at the least including a CU change to RCD protection. A cable of less than 10.0sq mm will be running at close to maximum load on a 10kw shower and could present a risk of overheating.

 

[RF Lighting]

Can you pick your MCB style from the following line up?

 

[Taylortwocities]

You'll need an RCD on that shower too. Do you have one in your consumer unit?
If not, you'll need a new board or a separate mini-consumer unit to serve the shower.


PS Nice main switch RF!

 

[blup]

Thanks wingcoax - the cable is 10mm but the shower trips the mcb when the temperature control is turned to the highest.

RF lighting- the fourth picture is closest the mcbs is marked LN 5932 at the top and with the current and Mark 2 at the bottom. The CU is marked 5500.

Taylortwocities - there are no rcds at present only mcbs.

thanks blup

 

[Taylortwocities]

there are no rcds at present only mcbs

Then forget updating your present board. You need a new one or have something like this installed SHOWER CU


All notifiable work, BTW!

 

[ban-all-sheds]

All notifiable work, BTW!

How come you know which part of the UK blup is in?

 

[bongos]

Blup lives Bedfordshire way, apparently.

 

[blup]

Thanks to all for your helpful replies - will get a qualified electrician in the circumstances

blup