FCU for the Washing Machine & for the Dishwasher

[mdbalson]

So would this be the correct way of wiring up the FCUs

 

[JohnD]

If you mean per your diagram http://www.myonlineimages.com/Members/mdbalson/images/kitchen (New Wirring Plan).bmp

Then it could be done using a 20A radial in 2.5mm.
I see the existing MCB is 20A.

Rather than FCUs I would have used 20A DP switches (same size but no fuse) with neons. This is because you have fuses in the 13A plugs, and the ideal number of fuses per appliance is ONE.

If you run more than two 13A appliances at a time on this circuit, the MCB will be overloaded and trip.

An alternative would be to run a 4mm 32A radial, or a 2.5mm 32A ring.

If you do not want to chase the walls at this time, you could run it in 16mm mini-trunking which looks quite neat in a kitchen and makes later changes easy. You will probably want to renovate the kitchen later and could incorporate a kitchen ring, chasing in all the cables and sockets horizontally at that time. There is no great advantage in re-using old cables especially if they are not run in an ideal way and go up into the ceiling when they could conveniently be run horizontally between accessories.

If the first double socket is a spur off the same MCB you could conveniently include it on the same radial and run the cable horizontally from there.
Part P has already been mentioned.

 

[ban-all-sheds]

mdb - I could have sworn that only a few minutes ago your posts had lines in them saying "this is is the image hosting site I use", or something like that, cos I was going to quote that line.

Anyway - check out ImageShack, as that has a number of neat features:

1) Automatic resizing, if you want

2) A toolbar you can install which then allows you to drag image files into a message window as you type, and have it automagically upload the images and insert the URLs with the [i mg] [/i mg] tags, or insert clickable thumbnails to keep the size of the post down.

 

[mdbalson]

Rather than FCUs I would have used 20A DP switches (same size but no fuse) with neons. This is because you have fuses in the 13A plugs, and the ideal number of fuses per appliance is ONE.

Do you get 20A DP switches in Chrome, as this is what all the sockets etc. will be

 

[JohnD]

If you buy a major UK brand, they will have a whole range of accessories to match.

 

[mdbalson]

If you run more than two 13A appliances at a time on this circuit, the MCB will be overloaded and trip.

Will having the Washing Machine, Dishwasher, the Kettle & the Fridge running off this 20Amp circuit be ok (The 20Amp Circuit in the CCU)

(P.S. The Fridge will be on the socket above the meter cupboard)

 

[JohnD]

"more than two 13A appliances at a time"

 

[mdbalson]

"more than two 13A appliances at a time"

So the 20Amp MCB in the CCU should be made bigger

 

[JohnD]

So the 20Amp MCB in the CCU should be made bigger

No, because your cable will not support a bigger load.

..An alternative would be to run a 4mm 32A radial, or a 2.5mm 32A ring.....

 

[mdbalson]

No, because your cable will not support a bigger load.

Would I be able to Up the 20 MCB in the CCU, IF I made the circuit in to a ring main

 

[mdbalson]

I am going to make this Circuit into a ring main and put it on a 32amp MCB, and move it down on to the newer ccu as it has a spare hole, and as i cannot up the MCB in the older ccu, as it is a old ccu and you cannot get the MCBs. I will also make the first double socket above the meter cupboard as part of the Ring main.

 

[mdbalson]

You will probably want to renovate the kitchen later and could incorporate a kitchen ring, chasing in all the cables and sockets horizontally at that time.

There is one Ring in the Kitchen already, on the side where the cooker is, with three double sockets.

I am going to make the radial near the sink into a ring, so this will give two RCD Protected rings in the kitchen. (As I am going to move the ring near the sink on to the newer ccu, which is RCD Protected, and this will also mean that newer ccu is just for the Kitchen and Shed.)

(Newer ccu: Cooker (32amp MCB?), Kitchen Ring 1 (Near Sink)(32amp MCB), Kitchen Ring 2 (Cooker side of Kitchen)(32amp MCB), Shed (32amp MCB))

This will mean that acording to the IEE ON-SITE GUIDE to BS 7671:2001(2004), Appx 8 Table 8B which tells you the recommended number of socket outlets for each type of room.

The Kitchen will have about the right no of sockets (5 Doubles above worktop, and 2 Singles below worktop for built in appliances.)

 

[mdbalson]

So would this be ok

 

[securespark]

you could run it in 16mm mini-trunking

Curse you, son of Satan!!

Put 4mm2 in a 16mm trunking? Does this satisfy the regulation for 45% spacing factor??

 

[JohnD]

I was thinking of the 2.5mm ring

But surely the spacing is to allow you to draw in cores easily in conduit? Does it apply to mini-t with a clip on lid?

Anyway, maybe I was thinking of 25mm x 16mm