Hi,
Posted 5 years ago about the electric installation in my kitchen... And I'm back about the same thing! Seems like damp walls have potentially damaged cables: an electrician visited, and confirmed i've got faults in 2 places. One of them can be easily accessed and fixed, the other requires removing kitchen worktop, chanelling into a damp wall, making good, etc...
He suggested an alternative which is to make the ring into 2 radials. See below a little diagram.
My worry is that he mentioned that each radial will have a 16A MCB (and get rid of the old ring's 32A).
I've read lots of posts, for example:
"A 2.5 radial can be protected by a 20A MCB subject to install conditions (method, length etc)"
Read more: //www.diynot.com/forums/viewtopic.php?p=667021#667021#ixzz3GKnLVWZn
"A 2,5 radial must be on no more than a 20A with a floor area covered of 50m2 or less."
Read more: //www.diynot.com/forums/viewtopic.php?t=70804#ixzz3GKonC3Qp
So I'm thinking a 20A MCB could be used. Is this correct?
With 16A, I'm worried that the MCB on Radial 1 could be triggered if the washing machine and dishwasher heat at the same time and we suddenly make a cup of tea and toast a slice of bread.
I don't have the option to lay a new cable and I don't want to dig the walls to repair the ring. If it is really a problem, only solution I imagine is to get rid of that double socket.
We would then be forced to plug kettle and toaster on Radial 2. But then maybe I would have to move Oven on its own circuit to ease the load (it's an easy route to the CU).
What do you guys think?
(I did engineering at school 15 years ago, so I'm technically minding and even though I won't do the work, I like to understand what tradesmen do in my house and the logic behind their decisions!)
Thanks,
Thierry
----------------------
All cables 2x2.5mm2+1.5mm2
Kitchen is roughly 16m2.
All other appliances (fridge freezer, combination microwave oven, induction hobs) have their own dedicated circuits.
Radial 1 :
- washing machine
- dishwasher
- 1 double socket (in which the kettle is plugged rated 3kW, and once a week the toaster at 900W)
dblSocket--1m--dishwasher--1m--washing machine---9m---CU
Radial 2:
- extractor fan
- normal oven
- 6 double sockets
dblSock--5m--dblSock--1.5m--dblSock--2m--dblSock--2m--dblSock--1m--fan+oven--5m--CU
Posted 5 years ago about the electric installation in my kitchen... And I'm back about the same thing! Seems like damp walls have potentially damaged cables: an electrician visited, and confirmed i've got faults in 2 places. One of them can be easily accessed and fixed, the other requires removing kitchen worktop, chanelling into a damp wall, making good, etc...
He suggested an alternative which is to make the ring into 2 radials. See below a little diagram.
My worry is that he mentioned that each radial will have a 16A MCB (and get rid of the old ring's 32A).
I've read lots of posts, for example:
"A 2.5 radial can be protected by a 20A MCB subject to install conditions (method, length etc)"
Read more: //www.diynot.com/forums/viewtopic.php?p=667021#667021#ixzz3GKnLVWZn
"A 2,5 radial must be on no more than a 20A with a floor area covered of 50m2 or less."
Read more: //www.diynot.com/forums/viewtopic.php?t=70804#ixzz3GKonC3Qp
So I'm thinking a 20A MCB could be used. Is this correct?
With 16A, I'm worried that the MCB on Radial 1 could be triggered if the washing machine and dishwasher heat at the same time and we suddenly make a cup of tea and toast a slice of bread.
I don't have the option to lay a new cable and I don't want to dig the walls to repair the ring. If it is really a problem, only solution I imagine is to get rid of that double socket.
We would then be forced to plug kettle and toaster on Radial 2. But then maybe I would have to move Oven on its own circuit to ease the load (it's an easy route to the CU).
What do you guys think?
(I did engineering at school 15 years ago, so I'm technically minding and even though I won't do the work, I like to understand what tradesmen do in my house and the logic behind their decisions!)
Thanks,
Thierry
----------------------
All cables 2x2.5mm2+1.5mm2
Kitchen is roughly 16m2.
All other appliances (fridge freezer, combination microwave oven, induction hobs) have their own dedicated circuits.
Radial 1 :
- washing machine
- dishwasher
- 1 double socket (in which the kettle is plugged rated 3kW, and once a week the toaster at 900W)
dblSocket--1m--dishwasher--1m--washing machine---9m---CU
Radial 2:
- extractor fan
- normal oven
- 6 double sockets
dblSock--5m--dblSock--1.5m--dblSock--2m--dblSock--2m--dblSock--1m--fan+oven--5m--CU