demand | Page 9

demand

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  1. G

    Maximum demand

    Hi, A while ago I remember somebody mentioning a quick way of working out max demand with out doing it properly and it came out roughly the same as if you work it all out. It was something like add up add the rcb's and divide by 4 or something. Anybody know what I am on about or was is this...
  2. D

    Confirmation on main switch ratings etc

    Hi guys, just want to confirm if i got this right as i dont do many of these and got to get it right for my assessment. Just worrying at moment and seem to be forgetting to most simple things DB supplied by a submains from the house with own seperate isolation switch. DB MAIN SWITCH/RCD...
  3. T

    Max Demand again...

    Hi guys, doing a rewire on my house, been a bit separation happy, and need to reduce the total load to under 80A for the incoming supply. (currently 60A but distribution coming to upgrade cutout) House is 3bed semi, not big. under 95m2 in total. I originally designed it with smoke alarm circuit...
  4. L

    Max Demand

    Hi, just wondering if im doing this right... fitted a new board in my house, is this right for diversity? Shower 40A 7.5KW - 32A Sockets 32A 100% - 32A Sockets 16A 40% - 6.4A Boiler 16A 100% 3A (3A fuse in spur, or do i use 16A?) Smoke 6A No...
  5. sythai

    Maximum Demand... 3phase

    Looking at job this week, involving fair bit of additional 3phase equipment... Just wondering how to go about calculating maximum demand + diversity for this ? Any Ideas please?
  6. sythai

    Commercial.... Diversity/max demand

    Hello there.... Got a job coming up soon, local garage being extened adding MOT bay, so few more 3 phase supplies required. I just want to check that DNO's supply will be adequate, but obviously need to go to them with a figure first. Just wondering what is the method for calculating maximum...
  7. D

    Maximum Demand Load (Certs)

    Hi guys, ready for it yet another blonde moment from me, trying to get my head round my training. Regarding Maximum Demand load Amp/kA on the certificate If you have an existing installation you can measure the maximum demand load by by switching almost everything on the circuits and...
  8. C

    Max Demand Calcs

    Hi All, Just wondering if anyone can help with calculating the Max emand for the following - I have carried out my own calcs in three different ways and keep coming up with a very high figure. This installation will be single phase and run off a sub main U/G cable. 4x 58W strip lights 8x...
  9. N

    Current demand for 12v lighting

    I would appreciate some advise re calculating current demand for 12v lighting. Do you need to apply a factor (such as 1.8 for fluorescent lighting) or can you just take the bulb wattage into consideration?
  10. E

    Statutory Demand

    Hi has anyone ever issued a Statutory Damand Under section 123(1)(a) or 222(1)(a) of the insolvency act 1986. I have been informed by a mate of mine that he issues them and he has always been paid within the 21 days. What i have been told is that you issue these by recorded delivery and then...
  11. madeinengland

    maximum demand.

    i have my 2392 practical coming up.i'm fairly confident of the testing to be done on the board. the problem i'm gonna have is the three certificates to fill in. schedule of tests i'm fine with. schedule and inspections i'm ok with. but the certificate itself i haven't even seen and we've been...
  12. N

    Socket Outlet max demand with diversity

    Hi all, I know this is true: Power - 100% of the first ring circuit + 40% of all other circuits But in real terms, lets say I have three ring final circuits, one with 5 double outlets and two others both with 3 double outlets: Is the max demand therefore 10 x 13A + ((12 x 13A) * 0.4) = 192.4A...
  13. A

    maximum demand, main fuse and tails

    Ok, installing a new cu, leaving old one in place. They currently have 60A main fuse. With the new demand added the total MD is now 86A. Do I just ring up the supplier and get them to change the fuse and meter tails to 25mm where needed. Can I then keep the 16mm out of the henley block to each...
  14. M

    max demand

    Hi All, Just looked at a job and the max demand comes out at about 100A, main fuse is 60 A, they want a new cooker circuit installed (old gas cooker already removed for new electric and want the cooker back on ASAP as got loadsa kids), cooker demand after diversity is 20A taking the calculated...
  15. M

    Maximum Demand & Ib Design current

    Hi I have not had to work out max demand for an install or design current for donkeys and now my mate is needing some works in his shop and I can't remember the way to work it out or find my old college work ! also ..... Does anyone remember how to work out the volt drop calc for the mV/ per...
  16. P

    calculation for maximum demand

    Can anyone show me the maximum demand calculation or tell me were i can find it
  17. G

    Cooker circuit extension???

    Could someone please help me out with this question? Is it permissible to add a double socket off a fcu, off a cooker circuit. Cant find anything in regs or osg saying not.Background info: Separate oven and hob combined is only 7900w. Cable 10mm. Lenght 8m. Rcd protected with 32a mcb. :confused:
  18. K

    max demand

    Hi, Can you just put my mind at rest, been to a house and by the looks of it he loves down lights On the upstairs he has 8 x 50 watts down lights 6 x 50 watts down lights 6 x 50 watts down lights 5 x 100 watts lights Hes wants to add to this 8 x 50 watts down lights So is...
  19. P

    Max rated current demand of the motor and overload unit

    Just want to find out if this overload unit will be able to be set for the max rated current on this motor. I don't think it will though as it can only be set to 1.6A and the max rated current is 2.1A in delta? Am I right in saying this?
  20. Sintra

    Power / mains analysis tester.

    Does anyone know of a mains power analyser with a capability for testing up to 2000A. I currently have a trifid model but this has a 1000A maximum limit. Ideally a unit available for hire would be ideal is i only need to do a 7 day test in the main switch room of a shopping centre. Thanks...

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