W
WOMick
Hi
I am new to the forum and would like some expert advice on my kitchen planning and also a sanity check on the maths please.
I will be replacing a kitchen into a 20 year old house, so fairly modern build. The built in gas oven/grill is currently housed in a tall cabinet with a gas hob on an adjacent wall. The intentions are to replace with a built in single electric oven with built in microwave above it. The gas hob is to be replaced with an induction hob. A gas safe engineer will be capping the supply to the old gas oven and gas hob.
All appliance socket outlets (fridge, dishwasher etc) have FCU's fitted above the worktops with 2.5mm T&E so a good starting point. There is also a socket outlet on the wall behind the built in oven with an FCU adjacent. A 32A cooker supply has also been installed with 6mm T&E (at build) near to the gas hob but which has remained redundant due to no stand alone electric oven / hob (gas hob currently fitted).
So, my plan.......firstly installing the single electric oven and microwave:
Single Oven is rated at 2.9kW total load
Microwave rated at 900W
Fit the oven with 2.5mm heat resistant flexible then into a plug and utilise the existing socket outlet at rear of the original tall cabinet (this is protected by 2.5mm T&E 13A FCU). With a 12.6A draw from the 2.9kW oven and then applying OSG diversity regs it will be 10.78A (10 + (2.6 x 0.3)) so seems absolutely fine. I would then run an additional 13A FCU in 2.5mm T&E for the microwave above with socket outlet for the microwave.
Knowing that the there are mixed feelings regarding using plugs for built in single ovens (this one isn't supplied with cable or plug) I wanted some advice firstly as to whether this installation is safe but also whether my maths are correct and the install is permissable / notifiable. Considering the oven has been deliberately chosen as <3kW is it therefore acceptable to use 2.5mm flex + plug + existing 13A FCU / socket outlet?
Second plan is for the induction hob.
Rated at 7.4kW
I intend to utilise the existing 32A radial and wire straight into the CCU with 6mm butyl. The existing cooker isolator also has a socket outlet so I have added the 5A to the diversity equation. Can't see a problem with this at all but would appreciate a more experience person to give it the thumbs up. (7.4kW = 32.174A therefore with diversity regs = 21.65A (10 + (22.174 x 0.3) + 5).
So that's about it apart from the big money question.....is any of the work notifiable? Any advice or guidance will be most appreciated.
Mike
I am new to the forum and would like some expert advice on my kitchen planning and also a sanity check on the maths please.
I will be replacing a kitchen into a 20 year old house, so fairly modern build. The built in gas oven/grill is currently housed in a tall cabinet with a gas hob on an adjacent wall. The intentions are to replace with a built in single electric oven with built in microwave above it. The gas hob is to be replaced with an induction hob. A gas safe engineer will be capping the supply to the old gas oven and gas hob.
All appliance socket outlets (fridge, dishwasher etc) have FCU's fitted above the worktops with 2.5mm T&E so a good starting point. There is also a socket outlet on the wall behind the built in oven with an FCU adjacent. A 32A cooker supply has also been installed with 6mm T&E (at build) near to the gas hob but which has remained redundant due to no stand alone electric oven / hob (gas hob currently fitted).
So, my plan.......firstly installing the single electric oven and microwave:
Single Oven is rated at 2.9kW total load
Microwave rated at 900W
Fit the oven with 2.5mm heat resistant flexible then into a plug and utilise the existing socket outlet at rear of the original tall cabinet (this is protected by 2.5mm T&E 13A FCU). With a 12.6A draw from the 2.9kW oven and then applying OSG diversity regs it will be 10.78A (10 + (2.6 x 0.3)) so seems absolutely fine. I would then run an additional 13A FCU in 2.5mm T&E for the microwave above with socket outlet for the microwave.
Knowing that the there are mixed feelings regarding using plugs for built in single ovens (this one isn't supplied with cable or plug) I wanted some advice firstly as to whether this installation is safe but also whether my maths are correct and the install is permissable / notifiable. Considering the oven has been deliberately chosen as <3kW is it therefore acceptable to use 2.5mm flex + plug + existing 13A FCU / socket outlet?
Second plan is for the induction hob.
Rated at 7.4kW
I intend to utilise the existing 32A radial and wire straight into the CCU with 6mm butyl. The existing cooker isolator also has a socket outlet so I have added the 5A to the diversity equation. Can't see a problem with this at all but would appreciate a more experience person to give it the thumbs up. (7.4kW = 32.174A therefore with diversity regs = 21.65A (10 + (22.174 x 0.3) + 5).
So that's about it apart from the big money question.....is any of the work notifiable? Any advice or guidance will be most appreciated.
Mike
