demand | Page 4

demand

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  1. A

    Anticipating maximum demand

    Hi guys, I am after bit of advice regarding calculating the anticipated maximum demand. I dont know a lot of details about the install apart from: It is a 3 phase pme, 100A cut out. Light industrial use. I am calculating small power and lighting only, no mechanical. Lighting will be LED. The...
  2. D

    Diversity factor and demand factor, confussion.....

    Hi, could someone explain me the difference between sum of individual maximum demand and connected load.... do you think it is the same, ? And the answer for this exercise is what exactly, ?I have some confussion in the calculation... A power supply is having the following loads, A domestic...
  3. S

    max demand

    went to domestic job today where max demand was 236A (around 175A after diversity) main fuse is 100A so demand seems high to me...just wondered when you design what demand do you go to
  4. B

    sub main to outbuilding

    hi guys new to this so sorry if revisiting old stuff. I need to run a sub main 200M from the service head to a log cabin Super eco all LED etc, so 40A 9Kw max demand if i use the cable calculators i get 185mm cable we all know power networks cover huge distance with 35mm cable on 100A supply...
  5. D

    maximum demand kva 3 phase

    looking to get a bit of help got a job that currently has 8 flats and a landlord supply and a big office on the ground and basement After using the OSG for diversity have come up with the following 118A per flat (no gas) 127A for landlord (lift etc) 180A for office (air con)...
  6. Y

    Design course max demand question

    Hi all, I appreciate this has probably being posted time and time again, but I'm using my phone and the search threads button isn't working. Basically I'm just starting my design course (2396) project and I'm on with working out the max demand and diversity, basically I've split the job up and...
  7. delano

    maximum demand

    Is there an accepted rule of thumb formula for maximum demand?
  8. SJD

    Upgrading domestic supply (60A to 80 or 100A)

    For SSE DNO area, if a customer was to request an upgrade of supply from 60A to 80A (or 100A), does anyone know if SSE normally make a charge for doing this? Background: TN-S supply (Ze = 0.27 Ohm), late 1960's Bakelite-looking head which appears in good condition, mixture of 16 and 25mm2...
  9. A

    Maximum demand

    Hi guys, I'm looking to install a sub board to feed 4x 8.5kw shower circuits and 2x 2 ring 3kw hob circuits (4x32amp MCB's and 2x16amp MCB's). What would be the best method to work out the maximum demand? I get 83amps. Many thanks in advance.
  10. S

    3 phase advice

    Hi, i require a little advice. 3 phase supply (100A per phase) from energy meter into 3 phase switched fuse isolator, then swa off to D.B 20 metres away. Distribution board feeds office equipment only. I need to install a supply for a 36kw 3p machine, which is going to be situated next to...
  11. M

    Maximum demand / diversity (commercial)

    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...
  12. E

    max demand

    When working out max demand do you add the Ib for each circuit together ?
  13. S

    Maximum demand & diversity

    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...
  14. kkkkk

    New Zealand Insurance company demand proof of credentials

    Hi all There is a commercial complex that I am inspecting, testing and certificating, and doing any necessary remedial work. I have now got my client's insurance company demanding my credentials regarding being NICEIC registered (I am registered with one of the others), and that I have to prove...
  15. bartkusal

    Block of flats. Max Demand

    Wonder if I can get some guidance, on max demand in block of flats. It always was hard for me as it always comes to massive demands, and I red here that it all comes with years of experience and that it is like an art. This is first bigger project I am taking on. So please don’t shoot. I need...
  16. J

    Problems with Maximum Demand figure

    Hi guys I'm after a bit of help with working out my Max Demand normally in a domestic situation its fine but theres so many heaters and water heaters on this that I'm a bit confused. I have been asked to do a bit of commercial installation for a kitchen and toilets its a children's soft play...
  17. M

    Working out Maximum Demand.

    Hello all. As above. There seems to be much confusion on the subject and working it out "accurately". Thanks Matt
  18. M

    Voltage drop

    Is there a voltage drop from DNO transformer to incoming supply? For a standard 100A supply to a house so they design cable to with stand no VD as so at maximum demand there will be no VD. It is then up to us to design circuits as to have as little as possible so that 230v remains everywhere. Of...
  19. W

    once again maximun demand sorry!

    Hi all, sorry to bring this up again but I cant quite find the answer I need for an assessment As part of a rewire the ground floor has 20 double 13amp sockets but 9 of these are in the kitchen. I have been told the kitchen is drawing sockets will have: 13.3 amps from a washer dryer 13.3 amps...
  20. P

    Maximum Demand

    Can someone help me work out a max demand got a 40amp shower 32 amp cooker 16 amp radial 16 amp radial 32 amp ring 6 amp lighting 6 amp lighting whats the calculation to work out max demand please

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