capacity | Page 5

capacity

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  1. S

    dno

    what is allowed to be tested or can not be tested on the dno side of a domestic property?
  2. B

    200A OPD 3 phase short circuit capacity

    Hi all Any of you know whether there is a table or other source (other than waiting on hold for ages or opening the fuse covers)to find the short circuit capacity for a 200A main fuse in a 3 phase 40 year old supply? Also is it going to be BS88 or 1361?
  3. C

    Conduit Capacity

    can anyone help me im sitting my 2330 level 3 in a few weeks and been going over some past papers and found a question on conduit capacity, which if i use all the factors etc, the length was 12 meters, the table in the onsite guide only goes up to 10 meters, what would i then need to do?
  4. Top Cat

    Breaking capacity of a 3871 breaker?

    Anyone know what the kA of this breaker is? Also on same board i had a 30mA RCD main switch that had a BS number of 4293. Can't find that number should i just put down 61008?
  5. D

    MCB Breaking Capacity

    With regards to to BS7671, can anyone tell me where I might find values for the Breaking Capacities of Type B MCB's. I just can't find the answer to this one? :-(
  6. G

    March-April solar PV capacity figures and the July FIT cuts

    I've just spent the evening analising the Solar PV capacity figures for March and April to see what they would mean if DECC stick to their proposals for basing the level of FIT cuts scheduled for the end June / Start of July on these installation figures. Bluntly, it's not looking good, with...
  7. yellowvanman

    SY Cable - current carrying capacity

    Anyone know which table in the BGB can be used for SY current ratings or can direct me to a relevant table?
  8. B

    Steel trunking capacity

    Hi Folks, Not been here for a while, hope everything's still good! Well, here it is; I'm trying to find the capacity for 75mmx75mm steel trunking. I'm pretty sure it's 45% full it should be, I' having problems proving it though! Can anyone tell me the reg number or tables referenced? I've...
  9. P

    Declared Net Capacity Question

    Does your Declared Net Capacity appear on your FIT contract? What happens if your electricity generation exceeds your DCN are you still payed for the amount you generate or is it capped as soon as you reach your DCN?
  10. G

    Capacity and SAP

    New to this forum and find it very informative Just so you know I am an end user not an installer. I was just wondering when you have an installation, is the declared capacity for FITS just the output of the panels or is it related to the SAP calculations. I have some shading in the morning...
  11. M

    how can i take breaker ics rating?

    hi i wanna know that what is the abbreviation of ics and icu? and how can i take my ics rating of the breaker? is there any formula or calcualtion? and i wanna know short circuit rating ics of single pole and tripple breaker ? how can i take it?
  12. spud1

    Current carrying capacity of 2.5mm flexible cable

    Hi Guys if anyone has a regs book to hand please can you give me the current carrying capacity of 2.5mm flexible cable clipped direct, single phase.
  13. G

    declared net capacity

    Hi everyone, I know this subject has been discussed before but I'm still not sure! The network operator permits 17,25kwp to be fed into it's system. Therefore we have installed a 17000 Tripower. In order to get the highest yield possible we have fitted 20kwp onto the south facing roof which has...
  14. telectrix

    breaking capacity 3036

    as the title, i was asked the question " what is the kA breaking capacity of a 3036 fuse" i couldn't answer. only a guess of around 6 -10kA. anyone know?
  15. D

    Adding capacity to existing system

    Hi all. I am intending to expand a 1.2kw system to just under 4kw.What is the correct procedure to for informing relevant authorities,etc. I have installed lots of systems but not added to an existing one. Any guidance would be appreciated.
  16. S

    Tabulated current carrying capacity

    Hi all can some one help me out with this, It = In divided ccxcixcgxca I have a 32 amp mcb divided by cc 1 x cg 0.80 x ca 1.03 = 38.8 amps current carrying capacity. What would the tabulated current carrying capacity be, as it should be higher than the current carrying capacity. Hope...
  17. S

    mcs certificate

    Delivered a certificate the other day and cant believe I put wrong Net capacity it should have been 3.68 and not 368kW! How do you change this and is there a cost? Cheers
  18. B

    200 x 200 trunking capacity

    What is the maximum cable capacity (factor) for 200 x 200 steel trunking 2metres up the wall with a 90 degree bend three metres along the wall And what is the cable factors for 1.5mm and 2.5mm singles Don't have reference books to hand
  19. N

    32A ring circuits wired in 1.5mm firetuf

    I've been asked to inspect a shop and have found 4x 32 amp ring final circuits supplying socket outlets, all wired in firetuf 1.5mm twin and earth. Actually all the circuits are wired in this stuff, there must have been a deal on at the wholesalers.. My concern is does this comply with 421.1.103...
  20. L

    decreaseing current carrying capacity

    how does one decrease the current carrying capacity of a cable

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