distribution | Page 4

distribution

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  1. L

    Distribution board question

    Hi I've been looking at a drawing of an installation. It says it's a 4 way 32A HRC fuse distribution board. Way one is a three phase load and has 40A fuses on each of the phases. The second way has 3 single phase circuits fused at 16A Each, the others are spare. Is it me missing something or...
  2. D

    SY cable for distribution circuits and final circuits

    Hi all, Just a question relating to SY cable and the use of SY cable. My boss his carrying out a EICR for a industrial premise and coming across a lot of SY cable. These cables are used for final circuits and distribution circuits. I know that BS7671 list SY cable as non - standard cables and...
  3. K

    Testing a socket in the middle of a distribution circuit.

    First post. I've installed a 6mm SWA cable to a summer house in the garden from the house. Summer house has a cu with a ring and light. I've installed an outside socket in the middle of the distribution circuit. Between the house and summer house. Question. How do I inspect and test this socket...
  4. K

    Query - Distribution Board to Isolator

    Hello! Im an AC/Fridge Engineer just gone Sole Trader. So Im trying to price up an AC install package for Domestic and Commercial Customers and im scratching my head when in comes to the cost of wiring some Twin & Earth from the Distribution Board to an Isolator on the Outdoor unit. First of...
  5. Mark1977

    Running of distribution cables

    Hi, I'm looking for some advice regarding running of distribution cable around a warehouse. My client is having a new 200A supply installed but this will be on a different wall approx 20m away from the existing 100A supply. I need to run a cable from the new supply to the existing busbar chamber...
  6. J

    Tests for replacement consmer unit

    Could you tell me whether most of the tests carried out for a Domestic Electrical Installation Report would have to be repeated if a replacement consumer unit is subsequently fitted?
  7. J

    40 Amp MCB supply to a 100 Amp Distribution Panel Help!!!!!!!!

    My industrial unit is supplied via solar power. All the switchgear and mains supply etc. for the solar is in the unit next to mine to which I have no access unless the tenant is in. The landlord has got the supply coming from the solar unit through a 40amp MCB into our main distribution panel...
  8. J

    max demand for flats

    Just double checking calcs if anyone bored! So for a block of 3 flats with no gas services- all flats same. +communal stairs over 2 floors (LED light few small panel heaters) Flat: Kitchen Ring (32a) (32) Ring (32a) (12.8) Oven (20a) (13) Hob (32a) (16.6) Immersion (16a) (16) Lights1 (6a)...
  9. M

    Adiabatic equation on distribution circuits

    Now I know this has probably been covered a few times but I'm struggling to come to terms with my own calculations. I would appreciate it if someone could tell me if my calculations are correct. So basically I've done a periodic and some of the CPC sizes for sub mains are less than half the...
  10. T

    3 phase distribution

    Hi all, Just an enquiry.. Our company have recently moved factory's. I am talking a very small unit. At the moment there is one TPN distribution board which is at the top end of the factory.. Is there any problem running a 3 phase supply off a 63amp mcb which will feed the new d/b just to keep...
  11. D

    Distribution Board Height in a Small Cottage - Full Rewire

    Right doing a job for my registration assessment so got to get it spot on. Job is an old cottage but been stripped right out and complete rewire. Am I correct in saying the dB hight has to be at the same hight as light switch? Seems far to low if u ask me.
  12. Andy C

    RCB or RCBO in a Distribution Board.

    I am getting back into the electrical game after a few years and wondered what peoples thoughts are on the above. I am happy installing fully RCD protected DBs or Split boards but the use of RCBOs I had never seen. What are the main reasons/advantages/disadvantages for using them? I know they...
  13. L

    Distribution board checks

    Hi I have a question regarding switch boards and distribution boards. We have an existing switchboard and we want to use four spare ways in this to feed three new tp & n distribution boards. One for lighting one for small power one for security services. My question is what calculations have to...
  14. HappyHippyDad

    SWA or tails?

    I know I have started another thread in the past with an almost identical title but this one is asking different questions! The DNO are moving the meter box and I will need to extend the tails to approx 8m. The present earthing arrangement is TT, I have asked the DNO to change to TN-C-S and...
  15. P

    Single phase distribution for small flats

    im in the process of pricing a small flat development (sheltered accommodation/safe house. type thing It's a 2 storey mid terrace. Being converted to 6 bedroom with small en suites. Shared kitchen diner. Initially I told the developer they need a 3 phase supply as electric showers and heating...
  16. Leesparkykent

    Three phase TT install with distribution circuit and RCBOs

    I have an Install where a 16mm 4core has been installed previously. ATM the SWA is coiled up either end At the supply which is a barn converted in to an office for the homeowners business and plant room in new extension to the house. There is no PME available as over head, in the middle of no...
  17. M

    Access to Distribution boards

    Hi Guys its been a while since my last post. Here goes. My client, a large office on one floor of a complex, are responsible for a three phase supply to their office. EICR carried out 2 years ago. They are not allowed access to the distribution board to operate MCBs RCBOs etc but they are...
  18. C

    Fault Current Distribution

    Hello All, 1.Star connected earthed neutral Source to Star connected earthed neutral load? Say if a L-G fault occurs between the source and load, How does the fault current gets distributed? To the source side neutral or load side neutral? 2.Star- Star Transformer. Neutral earthed on both the...
  19. Davisonp

    Distribution Circuit Question

    Hi, The background. A church bought a derelict farm about 4 years ago. They demolished several non listed buildings and put up new wood buildings in their place. A new 100 Amp single phase supply was brought into one of those buildings and a henley block used to supply a local consumer unit...
  20. O

    How To Connect Two Distribution Transformers Together To Supply Electricity To A Community

    Pls how can two distribution transformers be connected to supply power to a community. I need the information so urgent. Thanks

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