cable sizing | Page 3

cable sizing

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  1. J

    3 phase cable sizing

    Hi Guys, Little help please.Ive got to install a 3phase mortar silo. Information i have been given. Requires a 16a 5 pin socket outlet (neutral and earth) 100m cable run Max load 5KW 30ma RCD protected Assuming c or d type Its beeen a long time since ive dealt with 3 phase. could someone walk...
  2. U

    Exporting Supply To Garage Extension, Cable Sizing

    Need to supply a cable for a garage extension, 'Plumber' has proposed 2 x 10mm T+E in 100mm ducting along with a water pipe, with no CU at the garage. This will eventually be marketed as an annex which will include but no limited to, 1 shower (power unspecified), 1 electric water heater...
  3. M

    cable sizing for 400a 175m 4 core

    hey, ive been asked to work out a cable size for someone and not sure on the sizing for the amps. the information received is that its to be armoured, 4 core and the distance is 175m and needs to carry 400amps. is there a cable big enough or will they have to run two in parallel. thanks
  4. N

    50 kW PV System a.c cable sizing info

    Hi there, I am installing a 50 kW PV system on a barn roof. The barn is supplied by a 4 core 16mm SWA which is partly run underground and is 100 meters in length. The three phase DB in the barn only supplies the lighting in the barn, all the old circuits have been removed becuase they...
  5. N

    Fan assisted ovens and cable sizing

    I'm after a bit of guidance here! Being an old fashioned type of chap I always ask what size oven is being installed to get the calcs right, however I recently carried out a Periodic on a property to be let and found that the oven was fitted with a 13A plug and plugged into to the kitchen ring...
  6. A

    Another cable sizing question

    i have been asked to install a garage unit in a outbuilding they wanted a couple of sockets and lights and i think i allowed about 20A total output for design current. what size cable do you think bearing in mind its a 90 meter run in a trench from house to out building.i allowed 16mm does this...
  7. R

    Cable sizing

    Need a cable to run approx 100m from incoming supply to a new build house,cable will be buried under ground what is the mimimum size cable that could be used to make it comply with the regs? Copper/aluminium? Thanks
  8. G

    Cooker cable sizing

    I've got a 17.1kW cooker to install. The cable run is 20m, can someone please confirm what cable size should be used. Thanks
  9. S

    3 Phase cable sizing help?? Proceedure?

    i'm after a little help with cable sizing. I have tried reading my IEE design guide, and still struggling to get to grips with the correct proceedure to follow for sizing cables. I have always struggled a little with this, but thus far my knowledge goes (albeit shaky)... It>_ In/(Ca x Cg x Ci x...
  10. S

    Dc cable sizing

    I have in the past mounted the inverter in the loft space but a customer wants it located in the garage. It's approxa 20m run to the array. Would you be inclined to put a dc isolator in the loft space for local isolation? The cable run for 1 string would be 4mm would this be correct? If anyone...
  11. S

    Cable Sizing

    Hi everyone, I've just had my electrician run the AC Cable from the inverter to the consumer unit but i think he has used the wrong cable size. Background Information- Its a 4 kW (Sharp NDR-250A5) system split over two strings running to a SMA SB 3800 inverter on a farm outbuilding. From here...
  12. B

    Newbie needs help with cable sizing quote.

    Hi Guys, Im newly accredited and have got a pretty strange install to quote already. The panels and inverters are fine but it's the cable size i’m getting different results with and none of them definite. The array will be in a field on a frame, the house has a split supply (2 phase??) And the...
  13. C

    TT Earth cable sizing

    Hi al, Just need a bit of a refresh regarding the sizing of the earth cable for a domestic installation with an earth spike. I believe 10mm for the gas & water bonding, but seem to recall that the main earth cable can also be 10mm?
  14. N

    Cable sizing

    Can anyone help me out with sizing two cable please? I dont have access to any of my reg's. Cable is in a duct, 210 meters long, 3phase machines @ 225KW and a 3phase machine @ 500KW. Cheers
  15. S

    Cable sizing question

    As part of my HNC project I have to calculate the cable size for a SWA cable. It's 4 core (3ph and neutral) running in a trench with a 'roof' of concrete (theres a big air gap around the cable) with no other cables in the trench. The run is roughly 20m long. I've looked in the 16th and 17th...
  16. D

    Cable sizing

    Hi Guys I have been arguing with a guy at work about some supplies he's been installing. He has installed two 16 amp three phase sockets using 4mm swa clipped and in trenches of about 30 meters he's protected it with a 32 mcb. The swa terminates in a switched fused isolator with 32 A fuses...
  17. B

    cable sizing help reqd

    hi guys, starting a new job on mon whoop whoop back to the rat race problem is i need to visit many sites and make quick descisions on sizes of cables etc but i was wondering if anybody knows of some type of software or online calculator that will help me do this quicker rather than spend hours...
  18. B

    cable sizing equation

    when determining cable size and you want to include the following thermal insulation(Ci) and circuits grouped (Cg) what tables do you use for the rating factors many thanks
  19. S

    cable sizing help please!

    Hi all, just new here today. Just want a few opinions on cable size needed for a cable run from a main dis board to a sub dis board. It's 3 phase 400/230V system so will be using either 5 core swa or 4 core swa with separate earth. It will be run in buried duct. The cable run is 80 metres...
  20. B

    Spur Cable Sizing

    Hi I'm adding a fused spur (6A) to a 32A ring to power a central heating boiler. Does the spur cable have to be the same CSA as the ring (2.5mm) or can I reduce the cable size to be minimum size required for load on that spur ? Also, is it then treated as a radial circuit for sizing/speccing...

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