Sanity Check Required - Do I really need 3 Phase Upgrade?
- Thread starter philnixon
- Start date
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b) for design of each circuit and c) for the complete installation.
i suppose he could still fit that 3 phase 8way board, balance the load and fit a single phase incomer kit, at least if needbe you could upgrade to 3 phase at a later date.
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Does this 'electrician' realise that an 8 way TPN board has space for 24 single phase circuits? Nothing in your original list suggested even half that number would be required.
If they are intending to install that many, what price did they quote for the 24 RCBOs?
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Very good point. Just double checked and he has priced for 22 RCBOs at £880.
... which, apart from anything else, clearly begs the question as to what 22 circuits he is planning to install. As has been said, you probably wouldn't need half of that.
Kind Regards, John
Only 22? Given the expertise he's shown so far....
- 60cm Pyroclean Right Hinged Oven 3.7KW (16A)
- 60cm Pyroclean Left Hinged Oven 3.7KW (16A)
- Combination Microwave / Oven 3.1KW (16A)
- Steam Combi Oven (Reservoir system) 2KW (10A)
Induction Ring - Induction 5 zone hob 10.8KW (45A)
Kitchen Ring - Downdraft Extractor 0.3KW
- Warming Drawer 0.81KW
- Warming Drawer 0.81KW
- Fridge Freezer 0.3KW
- Wine Cabinet 0.13KW
- Dishwasher 2.3KW
- Quooker tap 1.6KW
- Double Drawer Dishwasher 1.8KW (9A)
Utililty Room Ring - Washing Machine 2.4KW
- Tumble Dryer - Heat Pump 1KW
Ground Floor Ring - Nothing specific
First Floor and Loft Ring - Crosswater digital shower valve (not electric shower) .03KW
- Spa bath 3.6KW (16A)
Basement Sump Pump and Alarms - V3 Foul pump 1.2KW (6A)
- V3 Sump pump 0.43KW (1.9A)
- V3 Sump pump 0.43KW (1.9A)
- Alarm unit (2A)
- Alarm unit (2A)
Lights - all LED - Basement 30 @ 10w 300
- Ground 30 @ 10w 300
- First 30 @ 10w 300
- loft 10 @ 10w 100
Unless you want them on separate circuits, add all 4 ovens and the hob, and apply diversity to that.
Kitchen cooking appliances 32A
2 ovens, microwave & steam oven
Induction Hob 32A
Other kitchen & utility sockets / appliances 32A
Socket outlets & other fixed items
20A for basement
20A for ground floor
20A for first floor
20A for loft
Lighting
6A lights basement & first floor
6A lights ground floor & loft
12 way main switch CU with 9 RCBOs for the circuits above and 3 spaces for any future items.
2 ovens, microwave & steam oven
Induction Hob 32A
Other kitchen & utility sockets / appliances 32A
Socket outlets & other fixed items
20A for basement
20A for ground floor
20A for first floor
20A for loft
Lighting
6A lights basement & first floor
6A lights ground floor & loft
12 way main switch CU with 9 RCBOs for the circuits above and 3 spaces for any future items.
3-section CU (or 3 separate CUs), one part connected through a C/O switch to allow local generator to supply CH boiler, some lights and some sockets. Or a separate CU ditto or via a 60309 plug & socket.
One part, or one CU, to allow complete isolation of basement electrics in the event of flooding.
One part, or one CU, to allow complete isolation of basement electrics in the event of flooding.
What's the loading of circuit 16 ?Only 22? Given the expertise he's shown so far....
- 60cm Pyroclean Right Hinged Oven 3.7KW (16A)
- 60cm Pyroclean Left Hinged Oven 3.7KW (16A)
- Combination Microwave / Oven 3.1KW (16A)
- Steam Combi Oven (Reservoir system) 2KW (10A)
Induction Ring- Induction 5 zone hob 10.8KW (45A)
Kitchen Ring- Downdraft Extractor 0.3KW
- Warming Drawer 0.81KW
- Warming Drawer 0.81KW
- Fridge Freezer 0.3KW
- Wine Cabinet 0.13KW
- Dishwasher 2.3KW
- Quooker tap 1.6KW
- Double Drawer Dishwasher 1.8KW (9A)
Utililty Room Ring- Washing Machine 2.4KW
- Tumble Dryer - Heat Pump 1KW
Ground Floor Ring- Nothing specific
First Floor and Loft Ring- Crosswater digital shower valve (not electric shower) .03KW
- Spa bath 3.6KW (16A)
Basement Sump Pump and Alarms- V3 Foul pump 1.2KW (6A)
- V3 Sump pump 0.43KW (1.9A)
- V3 Sump pump 0.43KW (1.9A)
- Alarm unit (2A)
- Alarm unit (2A)
Lights - all LED- Basement 30 @ 10w 300
- Ground 30 @ 10w 300
- First 30 @ 10w 300
- loft 10 @ 10w 100
DS
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Think he has made a booboo there, one of many!
It looks like two separate ring finals for GF & FF/Loft.
It looks like two separate ring finals for GF & FF/Loft.
2 ovens, microwave,& steam oven on a 32a RCBO ? mm, that's a pain in the ass when it trips !
Judging by the kitchen money is not an issue.
Regards,
DS
I presume that, as with many sockets circuits, it is simply "unknown" - so all that can be said is that, unlike the situation for the ground floor and basements, there are no known, or predictable, specific loads which can be cited.What's the loading of circuit 16 ?
The same would be true of the sockets circuits on the top two floors of my house - apart from pretty trivial things like bedside lights, alarm clocks, a TV or two and electric blankets, I could not cite any other 'likely loads' - although there will undoubtedly be some significant loads plugged in from time to time.
Kind Regards, John
Yes, I have to say that I might well split it into two circuits, but that still does not get one even remotely close to 22 required final circuits (or a 160A design load for the installation).
Kind Regards, John
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