capacity

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  1. S

    Capacity on ring main

    Hi, I'm a DIY'er, new to this forum. My situation is, I'm laying a new kitchen ring circuit for my sister. The ring will supply the obvious kitchen appliances including 3kW oven, fan, washing machine, dishwasher, f/f, microwave, toaster, kettle, plus an elec fire at the far end. Potentially an...
  2. A

    What is the panelboard capacity (V & A) for 7-eleven type convenience stores, w and w/o gas station?

    Would like to know typical voltage and amps for the main service of 7-eleven style stores, with and without accompanying gas station?
  3. Adam_92

    breaking capacity of overcurrent devices

    I’m wondering if someone can tell me in the OSG or regs that it has the short circuit breaking capacity of overcurrent devices someone said it was table 7.2A but can’t find it anywhere
  4. HoverSPRX

    Max Demand/Diversity Query

    Hello All, Iv been asked to pick up the remedials on someone else's EICR that was done last year on a school for Deaf Children. One of the items listed on the report is the conductors leading to the sub mains from the main panel are undersized. I popped the cover off to have a look and sure...
  5. Empire

    Crabtree f-60 tp&n circuit breaker bs# and short circuit capacity

    Morning All, Having spent many years gleaning information from you all as a non member I've finally needed to join because, try as I might, I just can't find the answer to this puzzle, so here goes. I've just installed, replaced really, a TP sub board that's being fed from a Crabtree 60A STD...
  6. M

    Increasing 3PH Supply?

    A company i do work for are running over the capacity of their existing 100A 3PH supply, they are pulling around 100-120A all day long. I am trying to get them to get a bigger supply, they have tried asking for a 250A supply from the DNO, but they want £20K. (they reckon the transformer would...
  7. Y

    Maximum Current Capacity

    How much current capacity can handle in a 16 sq. Mm. Wire size in ac 415 volt supply? Because i have 2 pump motors that will connect to a power source of 415 volts ac 3 phase; 1 motor is 5.5kilowatts and another one is 7.5kilowatts. Both motors will run intermittently and supplying different...
  8. Rick Ellmore

    Trunking, Ducting capacity

    Hi Guys and Gals, I'm looking for some help, I am looking to find some info on cable carrying capacity of conduit, trunking and ducting in accordance with the IEE Wiring Regulations for my NVQ but I cant seem to find the info in the BS7671 or the OSG? anyone have an idea where to look?
  9. F

    Swa current carrying capacity

    hi I've been asked to pick up a job where the previous builder went into liquidation and the property management company is asking me to complete the electrical works, relocate a fuseboard. Everything the previous company has done is exceptionally neat but I'm concerned on the design front...
  10. U

    DEWALT Flexvolt 18v-54v batteries

    Been looking into these batteries from dewalt standard 18v battery but has an output equivalent to 54v. Bloody expensive but they look like they will last ages and produce some serious output...
  11. G

    Breaking capacity of 3871 fuse lower than pfc?

    i have just done a test on a property and the pfc at origin of installation was 0.712ka. The 3871 mobs have a 6000a breaking capacity. I am a bit confused as I have read something about it always being higher anyway (16ka) for a fuse or main switch 100a or less. Any info here would be much...
    • Gerry Savage
    • Thread
    • breaking breaking capacity capacity current fault fuse lower maximum pfc qualified
    • Replies: 8
    • Forum: UK Electrical Forum
  12. E

    Cable Size And Current Capacity

    Hi, I have a question relating to cable size in 12v wiring on cars and the amount of current it can take. After looking at a friends car on the ignition barrel one of the cables went back to a 40A fuse, yet the cable its-self was around 2.5mm. How is this possible? or am I missing something? As...
  13. C

    3 phase upgrade

    I currently have a 100amp 3 phase supply. I would like to put in a >300amp supply. excluding the eclectical work past the Cut out. can some one please tell me the approx price on an upgrade? thanks
  14. S

    How much capacity of a labelling machine is good?

    How can we decide that the capacity is good of labelling machine? what should it be?
  15. C

    Replacement panels for a defunct manufacturer

    Afternoon all We have a couple of damaged Day4Energy 240w modules to replace and so far as I can tell this company no-longer exists. Well not in the same form as it did a few years ago anyway. A new company has taken up the technology but are not producing these panels. They have suggested...
  16. T

    < 50kW FiT Capacity Limits reached

    OFGEM just published this: https://www.ofgem.gov.uk/system/files/docs/2016/02/fit_deployment_caps_that_have_been_reached_in_tariff_period_1_february_8_march_31_2016_as_of_09022016.pdf Small PV is OK but the standalone cap was reached after just 1 hour of the new scheme being in effect. The...
  17. P

    Cable type ... current carrying capacity

    I'm looking at an install of a double oven cooker ... 11.3kW maximum demand ... and rather than use 10mm T&E for the final connection I have been looking at the CCC tables in Appendix 4 Table 4E2A on page 368 (3rd Amend of 17th) states I should be able to use a cable with 6mm CSA conductors...
  18. A

    Fuse breaking capacity

    where do you look to find the breaking capacity of fuses?
  19. C

    Current carrying capacity

    Morning The company that I work for has recently had an electrical inspection carried out. One of the findings consisted of 'ineffective overcurrent protection of cable due to rating of protective device and CSA of cable' Basically a 100A isolator was feeding a 16mm SWA. The SWA conforms to BS...
  20. rustynails

    Exceeding the current carrying capacity

    Current carrying capacity is a figure which is given to us by manufacturers, correct? Now, I've watched those videos of the guy trying to set fire to a piece of 1mm and it takes quite a bit more current to set a light. So for example, if you had a 9kw shower and a 9.5kw instantaneous unvented...
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