Chasing-in kitchen

[Binky]

Hi,

I've tried searching the forums for answers first - probably can't see the wood for the trees - but I have to ask some basic questions.

I'm adding some new sockets to the kitchen before a re-fit. I'll be extending the ring main that runs through the ceiling (solid floors) so I'll need to chase-in vertically up the concrete block walls. So basically how deep do I need to go and what, if anything, do I need to run the cables through before plastering over.

The cooker is easy - I just run that from the light switch, yes?

Cheers
Binks

 

[fireman22]

are they bare block walls or are they plastered already

 

[Binky]

Already plastered. Regular plastering not dry-lined or anything.

Was thinking of just pinning conduit over the top but I'm not sure it's wide enough for two 2.5mm cables. I wan't to use two feeds, one economy 7, which will go into a switch then onto single sockets for the dishwasher and washing machine thus giving me a nightime economy setting.

Binks

 

[fireman22]

well you dont need any capping to protect cables from the plsterers trowel just chase deep enough to keep cables say 5mm under surface so plaster can be thick enough not to break out

 

[RF Lighting]

Already plastered. Regular plastering not dry-lined or anything.

Was thinking of just pinning conduit over the top but I'm not sure it's wide enough for two 2.5mm cables. I wan't to use two feeds, one economy 7, which will go into a switch then onto single sockets for the dishwasher and washing machine thus giving me a nightime economy setting.

Binks

I don't understand what you mean.

Are you saying that you intend to take a feed from the peak board, and a feed from the off peak board to the same socket?

If so, DONT.
Can you give us a bit more information on what you intend doing?

As for covering the cables before plastering the best thing to use is either oval conduit with the cables fed through the inside, or capping nailed over the top of the cables

You can buy either from any electrical wholesaler, most DIY sheds or online Here and Here

 

[Binky]

The plan was to have two seperate feeds going into a switch, then have the common supplying the socket.

RL E7L
o o
\
\
o
|
|
LS

RL - rate1 Live, E7L - rate2 Live, LS - Live feed to socket

Only one live at a time would supply the socket.

 

[RF Lighting]

What sort of switch are you planning to use for this?

The only way of doing this properly is to either use an apropriatly rated relay or a changeover switch like this:

Not very pretty in a kitchen.

 

[Lectrician]

On a true Econ7 system, ALL lecky is cheap at night - just use a plug in time clock.

Messing with two circuits commoned to a socket isn't the way to go........even if done via a DP changeover switch (IMO).

 

[Binky]

Nice relay! But no thanks!

On a true Econ7 system, ALL lecky is cheap at night - just use a plug in time clock.

Unfortunatly it has two rates and two circuits. I have removed the storage heaters and replaced them with sockets for background night heating with oil filled radiators. Just thought I could use the cheapo lecky for washing pots.

Anyway, thanks for your suggestions but I think I'll just use plain old expensive rate 1.

Cheers
Binks