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  1. malcolmsanford

    To lighten the load.....................

    I hope TOMMY COOPER WOULD HAVE LOVED THESE ONES........ A mate of mine recently admitted to being addicted to brake fluid. When I quizzed him on it he reckoned he could stop any time. I went to the cemetery yesterday to lay some flowers on a grave. As I was standing there I noticed 4...
  2. ackbarthestar

    8.5kW resistive load. How do you know?

    Given the last post has been closed I'd like to continue the thread, without the bun fight, if I may. Tis true that the common element, pardon the pun, in basic electrical calculations is the resistance of the element. But how do you assess that resistance accurately when most appliances are...
  3. C

    Intermittent rcd trip on lighting circuit when under load

    Hello there i wonder if anyone could offer any advice on a problem I am having: Although not a qualified electrician, I recently swapped out the old Wylex re-wireable fuse board in my house and replaced it with a split load dual rcd board. Before anyone tells me off, I am not a complete novice...
  4. jibjob

    Split Load Board with 100ma RCD

    Hi Guys, During a visit to a rented property on behalf of a local agent it was noted that the RCD in the split load board was 100mA. The property is a 1st floor flat, PME and the protected circuits are cooker & sockets. It's a Proteus board with a beast of an RCD that swallows up 4 ways...
  5. S

    max load on 16mm2 T&E

    Gents, Can anybody advise me on the max CCC of 16mm2 T&E, 8 meters in length clipped direct. Its a sub-main to a consumer unit. Ran off the sub board is a 32amp ring, 2 x 6 amp lights, 2 x 20amp socket radials, 10 amp boiler supply and a 40amp shed supply and smoke detection(6amp). Cheers
  6. C

    Help with load design calculation

    Hi All, I have a site that I believe will be overloading the curent supply and board main switch and would like some input to check my figures. The client runs a software design company and useage of PC's, monitors & servers is very high. The main intake is rated at 100A BS88 fuse and the supply...
  7. UKMeterman

    Load ballance and overload alarm unit, usefull for small IE spanish supplies

    Hi, Ime italy havve just brought out a new bit of kit, that might be usefull to keep inside the spanish load limits http://www.imeitaly.com/docs/NT752.pdf it consists of a load monitor and contactor in the same unit, if the total connected load exceeds a certain limit it drops the non essential...
  8. N

    max load standard 100 A consumer unit (c/u)

    hi there this is my first post so its likely i come across a bit unknowledgeable .ive got a customer who uses single phase furnaces for heating glass, ive been told that each furnace requires a 40A breaker.he intends to use 2 furnaces at first and then wants to add a third and possibly a forth.i...
  9. J

    Wind load calcs

    Going through the accessment proceedures, thinking about MCS, when you have the wind calc's, what then happens with this info ? is it part of any document to be registered or kept in house etc
  10. F

    What CSA is the Neutral conductor in this split load 17th CU unit

    Had a look at a split load 17th edition RCD CU, quite new - one of the sides has a solid copper neutral that runs off to the Neutral bar on the DP isolator of the CU. Basically, due to a loose connection, a bit of Arking has gone on and made a mess. I want to put a new Neutral in to replace the...
  11. T

    High integrity or split load CU

    I rang my wholesalers today and asked for a price on a high integrity consumer unit saying it needs to have the 3 neutral bars. he left me 5 mins and rang me back with a price. He said it comes with a 100a isolator and that's it, I asked how is it split... Like a 5+5+2 ect.... He then said...
  12. Goody

    Question on maximum demand (load)

    Hi, the maximum demand (load) in a property is as follows: (4x32+4x6)0.40 = 60.8 amps and the main fuse rating is 60 amps. Does this comply, taking tolerance into consideration? What is the tolerance in this kind of situation? Should I ask DNO to upgrade the fuse and the tails? Many thanks!
  13. M

    why you need to balance a three phase systems and what a unbalance load does?

    Hi everyone i'm currently halfway through my cg2330, i wonder if somebody can help me on balance and unbalance load on a 3 phase systems the basics i needs only , they are split into single phases systems i want know about efficiency, running costs, cable and switchgear sizes advantages etc.. thanx
  14. P

    another load of idiots stealing copper

    this time some innocents were very lucky to be alive. my cousin lives in the street next to the houses and he was lets just say least impressed when he got woken up. BBC News - Castleford explosion: Copper cabling theft linked to incident
  15. S

    Calculating the load demand to supply cables

    How do i calculate the load demand to supply cables for the following situation:- A 3 phase load of 20kW SUPPLIED AT 400V with a power factor of 0.6
  16. K

    Full load versus demand factor result

    Hi Engineers, just want to clarify something. I have a computation of Total Full Load Current of 195 Amperes. My client gives me a demand factor of 0.70, multiplied to my Full Load Current 195 Amperes results to 136.5 Amperes. My decision is to use a 200 Amperes Main Breaker, am I right with...
  17. D

    Large load UFH

    Doing a kitchen job at the moment and as is the norm electric under tile heating has been specified throughout the tiled areas. Being a big area the load (about 4kW) is greater then the stat can handle so i'm going to have to fit a relay or contactor in line with the load. Firstly, does anyone...
  18. B

    32A mcb 36A load

    Hi all on a periodic how many of you would code 4 a shower drawing 36A protected by a 32Amcb just dont want to be to picky but i feel it should be noted to cover my back
  19. T

    2 Cables used to supply one load.

    While inspecting a premises I have come across...a 3 phase cold room with 40amp mcb protection.The problem is...the supply cable is 2x2.5mm 4 core and a separate 4mm earth run along with the 2 cables.The 2.5mm cables are doubled at the mcb,(does this create a 5mm supply). A 5mm supply cable will...
  20. L

    On Load v Off Load

    Am i right in saying that off load switches break the neutral and line feed, and on load switches just break the line? doing my 2330 303 exam on tuesday!!

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