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pfc

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  1. E

    When Filling Out A N.I.C Installation Certificate Online *DEFAULT PFC VALUE*

    Why does it try to give you the value of 16KA in the drop down box for prospective fault current. Has anybody else come across this or do they know the reason why? I always put my measured value in but still would like to know the reason they try to give you the above value.
  2. P

    PFC Test Industrial RCD

    Hi all, most of my work is industrial, I'm required to test a consumer unit in a hydro generation unit. This is not an issue I'm just struggling with the PSCC Live test as there is an industrial RCD directly after the incoming supply from Scottish power due to us having to supply our own earth...
  3. Tiny Spark

    Checking PFC capacitors.

    Hey guys, Hoping someone can point me in the right direction here. So I have aquired the responsibility of looking after the PFC units on site, Problem being nobody knows anything about testing the caps including me! So basicly they are 3 phase units with anywhere between 5 and 12 stages...
  4. D

    Ze / PFC conundrum at factory

    Hi all, I recently went to install a new circuit & when trying to obtain a ze reading at the origin (TN-C-S) I got 0.01 ohms with a pfc of >19.9kA... This is when testing from the main distribution board which is in a hut next to the building where the work took place 15/20 meters away. Anyone...
  5. Gazthesparky

    Bit of clarity PFC Amps or KA

    Having a moment lol please can someone clear this up for me. my merger MFT 1730 displays the PFC as 955 A Filling in a cert and it has the KA symbol by the box should I be recording the 955 in Amps or should i convert it to 0.995 KA Cheers
  6. M

    Recording PFC and PSCC results

    I have my Am2 this week and am getting confused with what reading is to be placed in schedule of test results. I understand for PFC to take the highest reading between 3 phase and earth but have to then go between phases & N to find PSCC. Is it PSCC reading then doubled and put on back of test...
  7. polo1

    Wylex 3036 board - PFC, EICR query

    Guys, I'm aware that 3036's come in Type 1,2 & 3 with different max fault current capacities. What I don't know is how you tell the difference between the Types. Also, if you assume a Type 1 at 1Ka, what would you code an installation with Type 1 rewireables with a PFC of 1.42Ka? The...
  8. 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...
  9. J

    no PFC

    Hi Folks, so doing some testing on an installation today and when i carried out the PFC test i was getting a reading of 11A? I tested and retested and kept getting the same result! So, the installation in question is a shed that has had a split load board installed (by someone else) which is...
  10. D

    PFC on EICR

    Came across a PFC result on an EICR today of 10KA. My meter is calibrated and I carry out monthly checks with a check box to ensure the on-going accuracy of the equipment and all tested fine up to today. Im not sure if I should quote my customer for C type R.C.B.Os with a higher breaking...
  11. D

    Lowest Zs reading and highest PFC i've seen. Answers on a postcard please.....

    I did an EICR for a client over a year ago and as part i took the Ze reading at the incoming supply. All normal for a TNC-S it was about 0.14 ohms. I installed a socket in his workshop recently and as his tenant was in i could not remove the main earth so i took a Zs at the same position. The Zs...
  12. T

    Pfc test on a three phase system?

    Hi I'm currently coming to the end of my apprenticeship having completed my city of guilds level 3 and 17th. i completed my am2 last week and passed everything apart from my testing and inspecting. I would just like abit of advice on how to complete the pfc test correctly as I failed on that and...
  13. P

    Full Calculation of Perspective Fault Current - PFC

    I seem not to have access to the professional forums so I post this here: I understand ohm's law and to get a current you use Volts/Resistance (V/R); so if it's Perspective Fault Current (PFC), it's V/R or Volts/Ze; and we divided by 1000 to convert to kA. Yes? Is there a difference when...
  14. D

    high pfc domestic property

    hi, fitted new consumer in a domestic house. testing. ze 0.16 zs at origin 0.04 pfc 6.2ka the pfc is my problem, ohms law would make the pfc work out around 5.7Ka (using 0.04 as your resistance) (with all paths in place) using megger 1553 two lead test, high current, pefc and pscc are the...
  15. S

    High PFC. Cascading

    Hi fellas, Doing a new build at moment, its had a new supply put in - Ze is 0.02 ohms, Pfc is 12kA. Besides changing all Mcbs for higher rated breaking capacity are there any other methods that could be used to make this install comply with regs? I asked a colleague who suggested applying a...
  16. uksparks

    Pfc / pscc

    Hi, If you have a TNS supply, you would have a separate earth path by way of lead pipe or split concentric etc... true? Ok, so if you have a PME / TMC-S supply, the earth connects to the neutral at the service head, yes... true? Ok, so just out of interest, if you had an overhead TT thats now...
  17. HappyHippyDad

    BS3036 breaking capacity and PFC..

    Afternoon.... I have just completed an EICR and am unsure if the Wylex BS3036 fuses require a code due to their breaking capacity related to the PFC. Firstly I would like to identify if they are S1A, S2A or S4A as that would solve the problem of the PFC being 1.35kA, however I dont think its...
  18. V

    Pfc and pscc

    Could anyone out there give me a detail explanation on what is the above test reading proving, is it that you have for a very low reading good continuity through the connections at the equipment at the origin of a installation. And what makes the reading vary from one installation to another.
  19. D

    PFC in a TT system

    Hey guys im testing a TT System and the Rod resistance is 33 ohms. Which voltage / 33 is 6.969 which is greater than 6k rated on the mcb. What else can i do except increasing the rated mcb to 10k? thanks in advance.
  20. D

    Very low reading of PFC test

    hi, I did Ze test, I got 0.22 ohms but PFC test I got 22 Amps. it is very low. I am expecting a (230/0.22=1045 amp ) by theory So pls let me why it is very low reading

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