Hi all
Am started a kitchen for a customer who knows it all he does want any floor lifting etc to save on mess. But the situation is existing 6mm in, is in good condition but there is a hob and double oven wanting to go in. Now the hob is 7.2kw and the double oven is 5.4kw . I would usually put...
In preparation of wiring up a commercial premises (function rooms / bars / restaurant area) I am trying to determine to what extent the existing 60A single phase supply might need upgrading. I have not had to do this myself for a commercial premises, and I am wondering if the same rules apply as...
Pricing a rewire where they want underfloor heating, through out the whole gaff.
This equates to over 70 amps.
Is there a simple way to bring to demand down, like some how controlling that the upstairs and downstairs cycle seperatly etc
Hello all
Would someone please cross check my calculations?
Cooker induction HOB ONLY, oven is on a separate wall with seperate 6mm cable.
4x elements
1400, 1800, 1400, 1800=6400w total.
6400w / 240v=27A
27A-10A=17A
30% of 17A=5.1A
5.1A + 10A = 15.1A plus 5A socket =20.1 A total
Note the...
Currently completing 2396 project (cant wait to see the back of it!!) Would just like to check im on the right wavelength when calculating max demand and diversity
DB1 Maximum Demand & Diversity
Lighting - 90% of total demand.
Total demand of lighting circuits is 50.48amps. After...
Hi Guys,
Here We Go With Another Post That Causes Many Different Opinions On the Forum.
Been asked to do the wiring for a new fitted kitchen in the next few weeks, The work includes modifying the ring circuit to include a new 20A D.P switch for a dishwasher.
The difference of opinons starts...
Interested to hear people's thought around installation diversity when adding a 7kw (=> 30A) shower onto an installation with a 60A DNO cutout fuse - existing circuits include 30A socket ring, 30A cooker*, 15A immersion (rated 3kW => 13A), 5A lights (6 fittings @ 100W => 2.6A?); and on economy...
Hi,
I am looking for a little advise on how to apply diversity and work out maximum demand on a new installation I am designing in a Cabin.
Cabin CU has 3 circuits
Circuit 1
6 Socket outlets - to supply 2.7KW Floor standing Hair dryer
Electric Oil filled radiator
Hand held hair dryer
Kettle...
Hi there, this is a question I originally posted in the trainee sub forum which has been a little quiet of late. I know more traffic flows through here, so I'd be grateful for any corrections.
In specific relation to the standard arrangements of final circuits in accordance with Appendix H in...
In fact, in light of a recent thread I do have a question. There seems to be some conflicting information concerning the sequence to derive Ib. From a number of different online sources, actually. It has introduced an element of doubt, so I'd be grateful for confirmation and / or a correction...
Looking for some assistance here, been asked to calculate the max demand and diversity for the supply authority who are installing new main armour to a domestic building which I am rewiring.
When calculating the max demand do I use current rating of the circuit breakers for the individual...
Hi can sombody please shed some light on this for me i cant get my head round the process ?
this is the equation i've been given
a 230v 12.5kw domestic cooker maximum demand current I=p/v =12500/230=54.35
i understand that bit but its this bit i dont get
applying diversitiy
first 10a of...
Hello all. I'll start by saying this is my first post. My name is John and I'm a maintenance engineer (electrical) from Scotland. Have found alot of cooker info on here but just to make surey My fully electric cooker is rated at 12925w and there is also a 45a fuse protecting and 6mm cable...
I have been to look at a job tonight for a new oven to be installed. The circuit is a 6mm T&E with 32a MCB. The appliance end of the circuit has the Electric hob (5.7kw) wired into a Cooker connection point and it also has a spur in 2.5mm for the old oven which has been binned. They have bought...
Hi guys,
I was just wondering if anyone would be able to help me in the right direction. I'm out in afghanistan working on 50hz systems and we are currently re-wiring a number of buildings (Including the sub mains). After applying diversity to each building we've calculated that a 3 phase 32a...
Diversity.
How do you tend to justify domestic installations when you come across what seems to be really common 60A BS1361 supplier fuses, where it all looks too tight according to recommendations in OSG?
Say we find 30A ring upstairs and 30A ring downstairs for starters. (plus 2 x lights...
Hi, installing 9 security lights around a building. 500w pir lights.
I have split the lights into 2 separate circuits (4+5) wired back to the disboard.
doing load calculations 500x5 = 2.5kw , 2500/240 10.41 amps so 16a mcb but I've wired in 1.5 t+e.
I'm pretty certain all 5 lights would not...
evening all
i have come a cross a bit of 6.00 T+E to day feeding a range cooker backed up with a 50A breaker which I will derate as when diversity calculated will be fine.but it accured to me I had forgot how to calculate if the 50A would be OK from the disconection times side of things...
Similar to the two showers thread, sorry.
I have been asked to supply a sauna (4.5kW) and electric shower (7.5kw) lights and sockets (using an oil filled radiator) to an outside room.
The supply is TNS, 80A (presumed) and the existing split board has 3 RFC, 3 light circuits, 1 immersion heater...
Hi all
I am struggling to find any information on wether any diversity should be applied to an electric combi boiler circuit in a domestic dwelling, i was hoping someone could help me with this?
Any help is much appreciated
Mick
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