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central

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  1. S

    Emergency Lighting Central battery system design

    Hi All, I am new to this site so be gentle please.... My question is this... I have been to an existing job which has 55 slave EMLs throughout the building. We are experiencing volt drop on the longer routes with the LED fitting, approx 40 lights. The LED fittings start to strobe as they hit...
  2. M

    decent electricians for work in Central London

    Is there any decent electricians with the appropriate qualifications that would be interested working in Central London, 2391 preferably.
  3. joel89

    Central heating radiators issue

    Hi all im an industrial maintenance spark, have a problem with my central heating at home I have heat on all small radiators up and down, the large two in the kitchen and living room double skin double convectors I have no heat what so ever i have bled both no air in system, heat on incoming...
  4. D

    Central heating question / help

    Hey guys I've basically rewired a bungalow and while doing so it only has a hot cylinder tank and a cold water tank in attick (I presume) I'm no expert basically a noob to boilers. I just replaced the live feed. The but it only has the above no boiler to heat with gas. There is 2 power...
  5. dez0178

    danfoss 103E5 control unit for central heating problem.

    Hi, My control unit is operating. The time is displaying and you can use the various functions but the problem is there is no red light illuminating and will not come on. Even the 1hr+ option isn't kicking in. The heating has been used since approx. early april. Hot water fine and so is boiler...
  6. C

    Emergency Lighting Central Test Unit

    I am wiring a premises that contains a Main Distribution Board and two Sub Distribution Board (SDB). I have wired a central test unit (CTU) in each sub board for the relevant emergency lighting in the area that the SDB is feeding, however the architect wants just one central test unit in the...
  7. polo1

    RCD tripping......yes, ANOTHER one!

    Guys, what, if anything, have I missed? Problem has apparently existed for over a year. Random tripping, no obvious pattern, but can be at 6am when only a fridge freezer will be operating (the f/f has been disconnected and still tripping occurs). It can go days/weeks and be fine with no...
  8. O

    HDMI from a central point

    I'm off to look at a job this morning where the "outline" spec for an extension and along with the normal sparky bits there is requirements for HDMI cables to run from various points back to a central point. I'm aware that some cables will run up to 15m - anyone got any experiences (good and...
  9. Rockingit

    Transit central locking issue

    I think I've somehow managed to upset the central locking on my transit (mk7) as when you lock it all up, it seems to think there's a door still open in the back, locks the front only and then beeps. I'm pretty sure it's not a mechanical issue (unless a sensor has just failed) - anyone have any...
  10. yellowvanman

    central lighting JB

    A little while ago I remember seeing a new type of JB for lighting that centralises all the connections in a 'largish' JB, similar to some I've seen that were done >30 years ago. ie. one 'power in' cable and then cables going to switches and lights. I think the one I saw had push fit...
  11. I

    Siemens rwb29si central heating timer

    Hiya all you good looking sparks, I have a Siemens rwb29si central heating timer and it is stating "service due" and has stopped my heating from working, how the f#€¥ do I reset it? thanks - - - Updated - - - I have googled it but with no luck
  12. A

    central heating nightmare

    Hi I wonder if someone can help me I'm having trouble getting my heating and hot water to come on at the same time I've recently replaced the pump and the 3 port valve The old 3 port valve was a Honeywell mid position v4073a And the new one is siemens 3pmp-v22 but i cant seem to get it to...
  13. C

    help with central heating s plan plus newbie

    Hi there, I'm currently in my 4th year, been given a job which includes wiring up the heating. Don't have any real experience in this area soo help would be much appreciated. 2 combi boilers feeding 2 seperate heating zones with rads, a underfloor heating zone and a hot water circuit which is a...
  14. S

    Please help with this central heating wiring question!

    I’m hoping someone with more experience of central heating systems can help with this problem, as I’m sure it must be a common situation. A plumber has replaced a system boiler, which heats the central heating and also a hot water cylinder. The system comprises a programmer, pump, valve...
  15. A

    London Day Rates

    Afternoon all, been offered some work subbying to a firm doing site temporaries for a couple of weeks, unsure what to say as a day rate, what's the going rate for subbying in central London at the moment? I currently charge £30ph for my own contracts based in Surrey/Berkshire, Cheers!
  16. T

    Transformer or Central Heating buzzzzzzzzzzzzzzzzzzzzzzzz

    Hi All, I would really appreciate if someone could help me ascertain what the continuous electrical buzz/hum noise is under my floorboards? I stay in a flat directly above a shop. They had been leaving their Emergency Light on through the night and I thought this may have been contributing to...
  17. M

    central test unit

    does any1 know how a Garo CTU is wired for emergency lighting ?
  18. W

    central heating help

    Wired in a y plan heating system not so long back , all was well until the boiler packed in a few months back , the new boiler has terminals for the external stat inside the control panel , my stat cable goes back to the wiring centre , the stat no longer works? Help please?
  19. K

    Liquid Cooled Inverter

    Speaking with a potential customer today that had been quoted on a German liquid cooled inverter, personally not come across this but it is suppose to be great for use in lofts etc as it is not cooled by air. I said I think he has been told a load of sales rubbish but has anyone come across this...
  20. K

    Central heating 3port valve?

    I was at a job today where there was a central heating comprising of 3port valve, what i couldn't understand was why is there HW off connection to be used in the programmer and also a third connection to be used on the tank stat, also this system also wanted a 2port valve incorporated into the...

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