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across

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  1. F

    rcd trip

    i have a back boiler with a 2 port zone valve, pump, cyliner stat and 7 day digital programmer. the problem is when the boiler is on it occassionally trips the boiler (about 4 times a week) not all the time. i have replaced the zone vale, cylinder stat and the programmer and this still...
  2. D

    Energy saving bulb flashing faintly when switched off

    Firstly I am am a DIY'er not an electrician. Last night I noticed that the energy saving bulb in my landing light was flashing faintly even tough it was witched off.. It is two way switched, one switch on the landing and one in the hall, power feeds the switch on the landing, wiring is done...
  3. V

    New job NEED HELP

    Hi lads and ladies,I have been working for a firm now for three and a half years doing maintenance and last week I have been given a new job todo with in that role of serviceing lights for various different companies. The problem the company expect me to know everything with in this role ,the...
  4. G

    Why would there still be current present when the circuit is off?

    A valued customer has replaced all his Halogen GU10's with LED replacement lamps. For some reason three lamps on one switched circuit remain on but very dim when the switch is off. This room is switched from 3 points and depending on which switch turns off the lamps this has an effect on the...
  5. G

    Flywheel Diode/Snubber Circuit For a DC Coil?

    Hi, I have a hydraulic valve with a two 24Vdc, 31W coils. How do you calculate the size of the diode to place across a coil to prevent voltage spikes or back EMF? Gerard
  6. B

    Anyone come across these guys...

    Met with potential customers last week via a lead from Price Engines.... When I arrived they hit me with this flyer they had picked up in a branch of Direct Flooring...... Apparently they are offering fixed price installations via their network of flooring showrooms..... Here are their...
  7. kingeri

    Supplementary bonding across plastic section of pipe

    8.5kw shower supplied by copper pipe......with plastic T where water supply branches to serve it, then back to copper. Any need to bond across the plastic T? Similar story with water supply to bath on hot and cold. All circuits RCD protected, shower itself earthed no problem.
  8. D

    Oops - just come across this - lessons on reacting to a solar panel fire !

    Hot topic: lessons on reacting to a solar panel fire |*Solar Power Portal
  9. M

    came across this today

    customer said they had this fitted a week ago. no cert was issued "things keep tripping the RCD thing out!" they rang the original installer he said theyre sytem was old and thats ot thier fault. bond to gas =none bond to water = none just amazing look at the lower bar(s)
  10. E

    pir light on front of house flickers when on.

    Quick one have any off you come across a pir controlled light that sometimes flickers when triggered. i have checked connections but not put my meter on it yet to test circuit. Just seems little strange to me thats all as never come across before. thoughts welcome.
  11. D Skelton

    I've never come across this before?!

    Hey peeps, A customer of mine (a landlady) has a small flat she's renting and wanted me to have a look behind a socket in the kitchen. When I went to look what I found was a 2g socket mounted in a dry lining box in a stud wall. Directly behind (on the other side of the wall) is a shower. The...
  12. P

    floor boards

    Hi Guys, Just wondering what method you use for getting up floorboards without causing too much damage ? :smartass:
  13. E

    Led glow

    Installed led spotlight on landing controlled by 2 way switch. When switched off it continues to glow. Presumably this is an induced voltage in the strapper. Is there any cure or even any need to cure it?
  14. sythai

    Resistor across a dimmer... help please

    Hi Chaps, Hope someone can help me with the following. Have got a couple of wall lights on a standard rocker switch at present, with 2 x low energy lamps. These come to less than 40watts in total. Customer want to put a dimmer in that is rated from from 40w - 300w. Sure I've heard before...
  15. S

    What fuse?

    Doing an install - came across a main cut out with the following markings On the outside - BIGG Stamped on the inside around the fuse head - LISTING RH80 80A Any idea what I'm looking at? The house was built late 60s early 70s according to the owner.
  16. sythai

    Anyone come across this before....?

    Been working on a 1970's flat this week and it's wired in this stuff : Singles and 'sort of' old style plastic semi flexible conduit. The thing is the ring looks like they've only wired the cpc in 1mm !! (Whoops I've posted this in the wrong forum - please could one of the moderators move to...
  17. Rockingit

    Anyone come across the term 'ISA'?

    Hi all, need to take a look at a job where the customer has had another line installed in order to split a property into two, apparently EDF are insisting on the client having an 'ISA', which is a phrase means nothing to me. I'm half guessing that this might be a translation error (customer is...
  18. S

    Dedicated AC circuit?

    Hi We need some advice on the following....... A potential new client has a hefty SWA cable across his field supplying five 6A caravan hook ups. Ideally he would like us to extend it over to his barn (20M) for a 4kWp system therefore avoiding having to install a new cable under ground. I have...
  19. silver surfer

    Hair dryers across 400 volts

    Is there a requlation relating to distances between equipment,? im testing a job where there are 4 hair dryers in a changing area all situated along a wall at a distance of about 1 metre from one to the next, all on individual circuits spread across three phases. So im thinking 400 volts between...
  20. L

    What in a house should or could be connected across L-E ?, having issues

    Fella's The last three CU changes I've been to I have picked up L-E and N-E readings of 0.01-0.03 Meg on the pre tests before I quote, there is not enought fault current to blow the 3036's in all three scenarios but enough to trip a 60898, I cant remember this happening before, unless I'm...

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