capacity | Page 2

capacity

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  1. 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...
  2. 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?
  3. NDG Elecs

    Ohm's law and Current Carrying Capacity recap..

    My lecturers were never this engaging....!
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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
  9. 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?
  10. 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...
  11. 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...
  12. 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...
  13. A

    Fuse breaking capacity

    where do you look to find the breaking capacity of fuses?
  14. 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...
  15. 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...
  16. happysteve

    Current carrying capacity of a ring final circuit - grouping factor?

    Eh up :) I'm trying to challenge myself with scenarios where I'm not sure if my interpretation of the calculation rules + regs is correct or not. RFCs are doing my head in. I think I understand most of the theory: - 433.1.204 lists a specific case where a RFC protected by a 30/32A protective...
  17. G

    Cross sectional area current capacity

    How would you go about figuring the current carry capacity of 2.08mm2 copper conductor? In so far no reg tables have none standard size.
  18. K

    factory rewire help

    hi everyone im currently looking at updating a board in a factory with bs88 fuses in it can anyone reccommend a board and overcurrent protective devices that would be a more suitable replacement? the out going circuits are ok and up to date thanks
  19. M

    current carrying capacity

    evening all working away with no regs etc anyone tell me cable size for 200a 3ph head feeding a 6way 3ph ryfield board singles direct from head to db approx. 1m long cheers
  20. S

    Emergency Lighting Central battery system design

    Hi All, I am new to this site so be gentle please.... My question is this... I have been to an existing job which has 55 slave EMLs throughout the building. We are experiencing volt drop on the longer routes with the LED fitting, approx 40 lights. The LED fittings start to strobe as they hit...

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