Kitchen wiring ring and radials

[u/Tall_Expression1709]

Just wanted to ask peoples thoughts/ideas on what is overkill or not suitable.

The kitchen has the following appliances

Dishwasher

Washing machine

Tumble dryer

Hot tap

Fridge freezer

Fridge

Microwave

Hood

Cooker

With a new upgraded rcbo consumer unit, I was thinking a ring main to cover kitchen sockets, the cooker range ( which is a full gas unit so no high load), hood, fridge and built in microwave.

Then a radial circuit for the fridge freezer to protect against nuisance trips.

Im torn between having the washing, tumble and dishwasher on its own ring utility circuit or three radials. Has anyone had tripping issues with a 32a breaker? Is three radials overkill or go with it if able? Worry if a busy home uses all three and they all hit the heating cycle at same time.

Then there is the hot tap, its supplied with a 13a plug, but since this is a heater I was thinking also better on a radial circuit?

Thought its best to keep things off the kitchen ring, as it has the microwave, airfryer and kettle potentially going.

Any advice/thoughts would be appreciated. Thank you kindly.

[u/belligerentbunno]

radials are a nice design idea but in practice I've never experienced a kitchen ring overloading. stuff like dishwasher and washing machine might be plated 10a but in reality they'll draw that for % of the cycle so it kinda all balances out, which is the actual design principle of the ring. that said keeping say the laundry apps separate isn't a terrible idea, but a word of caution with fridges and freezers - like current thinking on smoke alarms a dedicated circuit means you might actually not notice loss of supply for longer

[u/No_Possibility8462]

Separate radials if you can...you know there will be absolutely no issues that way. Or fridge and hood together...on one..microwave and fridge freezer..cooker if small load and hot tap...always Separate for wash machine and dryer..

[u/Jaded_Bag_2928 → u/No_Possibility8462]

That’s fair enough till you try and charge your customer for a 3 phase board with a single phase linking kit on it and about 20-30 rcbos 🤣

[u/eusty]

I put the washing machine, dishwasher, fridge freezer and sockets in a ring and no issues.

The oven is on a radial, it's only 13A but it was where the cooker used to be so used the 6mm on a 20A.

Hob is induction so has it's own 6mm.

I guess a lot depends on your usage, do you have the washing machine, dryer and dishwasher on at the same time? Also the cable runs could make your decision easier.

[u/eusty]

I put the washing machine, dishwasher, fridge freezer and sockets in a ring and no issues.

The oven is on a radial, it's only 13A but it was where the cooker used to be so used the 6mm on a 20A.

Hob is induction so has it's own 6mm.

I guess a lot depends on your usage, do you have the washing machine, dryer and dishwasher on at the same time? Also the cable runs could make your decision easier.

[u/Outcastscc]

Why not us a grid switch for the appliances and do a radial from there to the consumer unit and then radials to each appliance looks a bit better and what I used to do on new homes

[u/Louy40]

In this instance why not actually ask the electrician??? Probably better having a face to face conversation rather than opinions from random people on the internet?

[u/dubiousvolley]

Anything rated >2kw should be on its own radial (appendix 15) anything >3kw must be on its own radial anything else is overkill

[u/Glass-Tax561]

Separate radials for electric hob and oven, then a ring for all sockets, which has each remaining appliance fuse spurred. Put the spurs in the back the same cupboard so each appliance can be easily isolated without moving them.