value

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  1. T

    Calculation of capacitor value for conversion from star to delta

    Hi does anyone have a notion of how to calculate the capacitance value for the above?
    • The Ghost
    • Thread
    • calculation capacitor conversion delta value
    • Replies: 30
    • Forum: UK Electrical Forum
  2. Dozer 73

    Wholesalers who’s the best service and value

    asking this because our company uses .........wait for it CEF And yes I know!!!!!!!!!!!!!! They do stock and provide us any manafacture we require , and provide us a good service , but I do know these prices are highly inflated , even dearer than general public prices Which really annoys me...
  3. R

    Phone calls asking if I want to sell/know value of my Business

    Hi all, I`ve been trading for the last 8 years, in the last 8ish months I`ve been getting calls from firms asking if I would be interested in selling my business. Also getting calls saying that they have clients that want to invest in the area and would I sell or when I say no they ask whether I...
    • Ross1
    • Thread
    • asking business calls knowledge phone value
    • Replies: 7
    • Forum: Business Related
  4. HumbleWorker 91RT

    Best Sockets for value and longevity?

    Just wondering which sockets you guys tend to go for, your typical plastic units for internal no brushed steel effect types, as well as your external 1 and 2 gang 13 amp. Based on price low to hi, brand perceived view (high quality through to Chinese crap) and ease of installation has good...
  5. D

    16 amp commando sockets. 20 amp mcb on site guide as maximum value mcb

    Hello the on site guide lists 20 amp maximum mcb for 16 amps sockets. Having a debate with someone as to why this is? Why not 16amp mcb? I installed 20 amp mcb as it's for a car charger that charger's at 16amps for 8 hours and is not capable of pulling more than 16 amps but this has been pulled...
  6. 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.
  7. Zdb

    Obtaining R2 value on RFC

    If for whatever reason you can't do an R1+R2 test on a ring final circuit (unable to identify opposite legs). There's also an option on the paperwork for the R2 value... Am I correct in thinking that you do an end to end test on the CPC's which would give you r2, then just divide it by 4 to...
  8. T

    High Zs value with 2 sockets

    Hi all, Doing some pre board change testing and ive found 2 sockets with high Zs readings. Everything else is fine, done all my end to ends and the Zs's are what should be expected. A couple of the sockets have Zs lower than expected but 2 are higher. They should be about 0.8 ohms but ive got...
  9. polo1

    Exceeding max adjusted Zs on a board change.

    Testing during a board change, a RFC on a 32A 60898, with rcd protection, you find that the max Zs is exceeded by 0.1 ohms using the no trip setting on your mf tester On the EIC do you - A) simply record the actual measured value B) record the actual measured value and note the position under...
  10. haptism

    R1 + R2 of ring circuit

    Hi for a ring circuit, is there any need to measure and enter R1 + R2 values on a schedule of results ? Because an r2 value is already measured (together with r1 and rn). If I needed a ring R1 + R2 value to calculate ZS (although i would find ZS with a socket tester so really no need; but if I...
  11. L

    Soil resistivity

    Hi, How can I change earth resistance (R) value into soil resistivity (Rho)? Is this formula correct, ⍴ (Rho) = 2πAR (A = Distance between pegs, R = Earth resistance). Regards, L.
    • laxmi
    • Thread
    • attach earth resistance value
    • Replies: 6
    • Forum: UK Electrical Forum
  12. haptism

    SWA test results

    Hi hope someone can advise; ive not done alot of testing or filling out eic's and am a bit stumped on this. I have run the usual dead tests on a 3 core swa cable used on a final circuit all tests are good. However the amour (which needs to carry the full fault current), does it not need to be...
  13. A

    Comparing heating usage Propane vs Elec

    Hi there, I do hope this is the right place to post this! I basically want to compare energy consumption in heating between two buildings. Building A has a purely electrical heating system and I can get how many kWh are consumed in one month. Building B has a gas boiler which uses 47kg...
  14. J

    Questions in power engineering interview

    I would like to seek advice from experienced guys because I have interview test for my power engineering as below. Thank you. a) For 600A switchboard, what type of device setting need to do? Can I say that I need to do setting for direct acting for MCCB since more than 100A and earth fault...
    • Jason82
    • Thread
    • below courses degrees earth engineer engineering fault interview power questions salary setting students value
    • Replies: 0
    • Forum: Electrical Engineering Chat
  15. K

    Best value mft???

    Hi all Hope your well, my metrel finally packed up today and after ringing metrel uk for a repair price (£169 plus vat) I've decided to get myself a new kit. I've been looking through tester mans site and the megger mft1710 and the kewtech kt63 look decent testers and within my price range, has...
  16. A

    Ze/Zs of 3 phase supply

    Hey all, going over some testing before my final assesment. i've heard a couple of times when testing a 3 phase supply using a single phase to earth test you double the reading as your Ze/Zs, so if you test L1-E=0.07 Zs=0.14. also what i have done until now is test all three Lines to earth and...
  17. G

    mixer value on underfloor heating?

    HI all, installed a s plan, well i say s plan, heating up stairs and underfloor down, there is a 3 way manifold for the underfloor heating, a couple of question regarding that pls 1 actuator came , but there is a value i open with that stat so i assume i dont need the actuator ?? also i...
  18. A

    On site guide amended zs value sheet.

    Hi guys, just wondering if anyone can help. I was wondering if anyone has a link to the new on site guide zs values as I have misplaced my sheet and can't seem to find the post that was on here and can't find it on the iet website any more. Cheers. all the best ape
  19. M

    Help me to Understand to get value of R1+R2

    This problem solving was on Virtual Scenarios (Ring Final Circuit) Getting Value of R1+R2 2.5mm and 1.5mm size cable used. 1st From the C.U. values of following connection L to L =0.27 N to N =0.27 CPC to CPC =0.45 2nd from the C.U cross the outgoing L to the incoming N and vice versa Measure...
  20. S

    Checking loop tester readings from a sample socket.

    After calibration of my loop tester,I am considering using a socket in the house for future calibration checks and to connect various low resistances in series with earth via a rotary switch to give a range of readings,and if so what value of resistors?Thanks for any advice...

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