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  1. 1

    Wiring up an external security lamp

    A 3A FCU is a 3 amp fused connection unit or a fused spur as they are sometimes call. They cost around £5.00 from B&Q etc. This is basically a double pole switch with a built in 3A fuse. This will provide a easy means of isolation for the light for any maintenance work, and also mean that...
  2. 1

    Main EARTH cable (again)

    You will probably find that the earthing that goes into the plaster might well end up at an earth electrode outside. Is it a similar size to the gas and water bonding? Depending on earthing type it should be anything from a 6mm to a 16mm (may be even a 25mm). If work by a part P electrician...
  3. 1

    Main EARTH cable (again)

    Is the CU you are talking about the main CU or a sub distributon board put into feed an extension? ie is the meter next to it or not? Either way it should be earthed. Is it fed wire an armoured cable, where teh armour itself acts an earth?
  4. 1

    Wiring up an external security lamp

    You can wire this from lighting circuit JB, but it would be advisable to wire to a 3A FCU first before the lamp with PIR. The cable you are describing looks as though it is 2.5mm twin & earth, normally used for ring and radial power sockets. The normal cable for lighting is either 1 or 1.5mm...
  5. 1

    Main EARTH cable (again)

    It might be that you have a TT earthing system and that the main earth is from a earth electrode driven into the ground outside somewhere. If this was fed straight into the back of the CU you might not see it just by looking at the front of the unit without removing the cover. Even if this is...
  6. 1

    SHOWER DIAGRAM

    I guess that BAN's reply would apply to the others asking the same question in different ways as well.
  7. 1

    HELP Again !!!!!!!!!!!!!!!!!!!!!!!!

    This sounds as though it's one of those funny ones from Homebase where the ~ symbol represents the connection from a momentary or retractive switch that when 240v is switched to it (momentary) it will bring that dimmer into circuit. As spark 123 says, take it back and buy a standard dimmer...
  8. 1

    low voltage lighting: higher current?

    The main thing I remember from a lecturer I had at college when talking about voltage and ampage, was that..... "volts jolt, but amps kill!"
  9. 1

    Only a porch light

    Even though the sensitivity is significantly decreased when approaching any PIR straight on , in such a short distance of a few feet, this shouldn't actually effect this too much. I would suggest this won't cause you a problem. If it were coming up a 8m drive for example, then I wouldn't...
  10. 1

    Not a blown Fuse?

    BJS Spark is right, old style rewirable fuses can be blown even though they might look fine. Replace the fuse wire (with the correct type of fuse wire - more than likely 5A - very thin stuff) and replace. I would suspect that this will cure your problem, or blow again straight away if the part...
  11. 1

    Discrimination

    Is the plug top fuse 3A, 5A or 13A?
  12. 1

    BT phone points

    I have just finished work on a large site with 135 apartments where i was involved in the comms system. Electrical contractor wired all BT's stuff, but then BT just came and terminated their own NTE5 master points and weren't interested in connecting up the cabling to bring the other six...
  13. 1

    How many lights?

    if you are filming - can I have a copy? :wink:
  14. 1

    something wierd....outside shead

    If it trips the RCD rather than the MCB then there is a fault to earth on the cabling to or in the shed. Neutral does need to be connected on the RCD neutral bar. If it's not a split load CU in the shed then polarity would not cause the RCD to trip BUT if you are unsure as to whether this...
  15. 1

    problem with outside light

    You don't need juice, you need electricity :lol: Have you replaced the lamp (bulb), as well as the fitting? Try taking a lamp (bulb) from one of the other fittings that you know works to prove that it is definately not the existing lamp at fault.
  16. 1

    old lamps

    Got to TLC diect: http://www.tlc-direct.co.uk/Main_Index/Lighting_Menu_Index/Lamps_and_Tubes_Index/GLS_Household_Lamps_1/index.html I would have thought CEF or Neweys could have orderd them in though. I know Philips still make them as I bought some not that long ago.
  17. 1

    6mm or 10mm - that's the question!

    For the additional cost in cable (approx. £5) there is no doubt that you should install 10mm2. Just think in three year stime when your shower breaks and you want a nice new one that just that little bit too powerful for 6mm2? How gutted will you be you saved that £5 previously?
  18. 1

    3-gang light switch acceptable in this situation?

    why not make a short 5A round pin plug to 13A trailing socket to use so that you don't need to chop the plug off? If it can be hidden behind the furnture or something out of the way you won't see it, and you won't void any warranties then....
  19. 1

    C&K Securitech Alarm question

    Andy's quite right. As long as the alarm is in day mode (ie not set) when you open the tamper contact the sounder at the keypad will go off, but no the bell outside. Just silence this with your normal code, then do the work, (the tamper LED will stay lit on the RKP). Once you've finished and...
  20. 1

    pics of dangerous pipes

    Can someone explain what's wrong with that way of installing? :lol: :lol: :lol:
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