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  1. R

    2 Gang Dimmer method

    Right, as I'm a bit of a 2-gang dimmer myself at the moment, I thought I'd post this here to help get my head around it. I've come across a 2-gang dimmer (push on/off) which replaced a standard 2-gang switch, one switch controlling hall lights (circuit 1 on the pic), the other controlling...
  2. T

    Help with breaker amp calculation

    Hi, i need to know whether my calculation is correct. I have 4 x 2.2kW Motors (3-phase) , i have a miniture 32 Amp breaker (Type D) but according to my calculation i require a 40 Amp breaker. This is how i calculated it: 8800/(400x1.732) = 12.7 Amps per phase ---> 12.7x3 = 38 Amps Was my...
  3. sythai

    How do I edit my 'Home Page' (not sure if this correct place to post)

    Just wondering, how do I edit my 'Home Page' Sorry not sure if this correct place to post Thanks Sy....
  4. L

    Correct steps for Ze test on block of flats

    If I were to conduct a Ze test for the stairway lighting of a block of flats would this be the correct sequence of events: 1)turn off each breaker 2)turn off main isolator and lock off 3)remove main earthing terminal 4)put croc clip on main earthing terminal with one lead of tester 5)use...
  5. T

    Smoke Alarms

    Hi everyone Been asked to quote a partial rewire and I'll include smoke alarm / heat rise, its for a 2 bedroom bungalow. I'm thinking of installing heat alarm in the kitchen and smoke alarm in the hall. Could anybody tell me if thats sufficient. Any advice welcome Many Thanks T&E
  6. albi

    wylex main switch

    Hi does any know of a BS number for a wylex main switch on a 3036 DB. as I have been puting on my certs wylex main switch as I carnt find any ref for them.?????
  7. V

    P.F.C using a megger 1553 advice plz

    Hi all A question reguarding P.E.F.C and P.S.C.C using a megger 1553 Now i know this is a live test so lets say ive safely isolated ive got my megger im using the 2 wire lead option green and red. So the board has RCD protection so i set my megger to the NO TRIP PFC ? CORRECT ? Then...
  8. W

    wireless alarms

    Hi i am just enquiring to anyone that knows weather a wireless alarm would interfere with a wireless room stat in the same dwelling. i am guessing they will be totally different frequency to avoid this am i correct. Iguess each industry would have set guidelines to avoid this???
  9. Jimmy Boy

    Do we use the correct type of RCD's for our installations ?

    Just as a matter for friendly discussion, I think most of the sparks on here know which B or C type breaker etc to use for a particular application, but do we give any thought to the possible different types of RCD's there may be and their applications ? Setting aside time delay which is common...
  10. G

    Help! What is the correct SAP radiation factor to use for a 15 degree roof?

    OK. Need to get a quote to a customer tonight but hit a snag. The roof has a 15 degree pitch but table H2 doesn't have a radiation figure for anything less than 30 degrees (see below). What figure should I use? What do you use? Table H2 : Annual solar radiation, kWh/m² Tilt of Orientation of...
  11. B

    Regs with regard to Correct Connection of Equipment

    Hi, I'm doing my 2391 soon and in the Fault Find section you have to write which section of the regs it doesn't comply with. I have a list of potential faults, one of which is incorrect connection of a socket e.g. L in N and N in L terminal. I can't find it in Selection and Erection...
  12. B

    socket/ kitchen sink

    hi all would like to know yor opinion on this one should i fail a installation purely on the basis that there is a twin socket on a kitchen wall practically above the drainer of the kithen sink would like your input pls, ta much

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