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  1. B

    primary supply on eic?

    hi just filling out an eic and under the section- characterstics of primary supply overcurrent protective device.not sure what to put? the job its self was in a block of flats that has a tns supply, but then each flat has a 60a and a 40a mcb (dorman smith mcb) i cant find any other fuse etc...
  2. Jimmy Boy

    Board upgrades remote to main CU

    Apologies if this has been asked before but I can't quite put my finger on the answer searching threads. 1) If you changing a CU that isn't the main CU but a downstream one ie garage, you fill in all the data on the cert. as per normal but Ze and PFC at the origin is that actually where the...
  3. M

    110V site transformer

    Hi all, I'm new here but looking for some help with wiring a site transformer. It has a 32A 3-phase supply. I can see the terminals where I wire the phases in to but I cannot see where I need to connect the neutral. The transofrmer will be dropping the voltage to 110V. Where do I connect the...
  4. Amp David

    Charactaristics of Primary Supply Overcurrent Protective Device

    With a 2 way CU that is fed from a 32 amp MCB, when it comes to filling in an EIC, in the 'Charactaristics of Primary Supply Overcurrent Protective Device' part of the cert, is this the 32 amp MCB, or the main service fuse at the house end. Thanks in advance chaps.
  5. M

    Primary supply over current device

    Hi,, Can any one help me out.. Primary supply over current device rating 60A no other details on it..... is it 1361 or BS88? Pllease can also explain max demand on 60A and it's breaking capicity as well as type. Many Thanks:confused:
  6. S

    Primary supply overcurrent protective Device

    While completing the Elecsa certificate, it asked for the nominal current rating and short-circuit capacity of the primary supply overcurrent protective device. The system is a TNC-S and there is nothing written on the fuse at all to say what rating it is. Also it is riveted and it cannot be...
  7. S

    difference between a PT(Potential Transformer) & CVT (Capacitor Voltage Transformer)

    What is the difference between a PT(Potential Transformer) & CVT (Capacitor Voltage Transformer) ?

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