noise | Page 4

noise

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  1. P

    popping noise from wall

    Have a popping noise coming from the wall. There are 2 double sockets on the wall about 2 meters apart both of these have been changed to see if that would cure the problem. Popping noise is very random sometimes not heard for hours then can pop multiple times in a short period. Removed the new...
  2. R

    Transformer buzzing noise

    Hello, Posted this question on another forum but the place is dead! So thought I'd try here. I have an electric reclining sofa from DFS (UK). It works perfectly well, but the transformer sporadically emits a constant buzzing noise. I have found that a gentle slap cures the problem – but...
  3. B

    Power shower help please?

    Hi folks Amateur here. Generally okay with basic electrics but a bit stumped with this one. Today I tried to install a power shower. It's an aqualisa shower with the pump built in. I was replacing a previous shower, which turned on/off via a pull chord, and replicated the wiring. Strange...
  4. B

    RCBO noise

    Hello All. I have recently rewired a house, and fitted a TD-Line CU (main switch and all RCBO's). All has been fine until now, 1x 6a RCBO for the kitchen and TV room lights has started making a sort of buzzing/humming noise. I haven't heard it myself but the client says that it isn't very...
  5. silver surfer

    Harmonic distortion and noise

    Guys In GN3 p.19 under the heading of "assessment of general characteristics" point 4 mentions Harmonic distortion, how would that information be made available to a test engineer, and what could he do about it anyway? Tested a job earlier this week and my fluke 1653 was displaying error 5...
  6. UKMeterman

    Power quality HF noise bursts 2vp-p

    Hi, I have a megger power disturbance analyser in a collegues house, it is showning HF noise bursts of up to 2vp-p at about 5 to 10 times a min. What are the normal causes of these? The mains voltage is in spec. Thanks
  7. O

    electrical noise

    Hi please can you someone explain what the noise means on and how to avoid this regarding the test instrument when conducting earth loop. the manuel says to turn off rcd function but this causes the rcd to trip then i not able to proceed with test either way. any help on this matter greatly...
  8. M

    i need a hand with an annoying clicking noise!

    Alright sparkies, Got a bit of a problem with a light I was asked to have a look at today, I didnt have time to investigate as I had to shoot off to another job. Anyway, theres a light fitting in an entrance hall to a swanky office building which is switched via a 360 degree PIR mounted on the...
  9. R

    Wind noise of roof mounted PV array

    I just conducted a site survey and got a new question that I didn't know the answer to.... The customer has an open barn conversion and explains that the rain makes a terrible noise and can disturb tv watching for example. The PV panels will provide a barrier to rainfall hopefully reducing the...
  10. E

    Sparking noise from water pipes whilst doing Ze test

    Evening all, today i was doing a fuse board upgrade. On completion i was testing ze and water pipes were sparking. On further investigation found no earth presesnt. tested ze on non trip mode and got 500 ohms. Fitted an earth rod and managed to get it down to 6.38 ohms with a pfc of 39...
  11. T

    Mains Connection?

    Hi All, I suspect this has been covered many times but I cannot find a definitive answer. I am undertaking my first install which will be used for assessment. The inverter is a SB2500 with electrical separation so does not need RCD protection. My AC cable to the loft will be buried in, so...
  12. S

    "Quite" Bathroom Pullcord Switch

    Hi All Is there such thing as a quite pull cord switch?? My standard MK switch wakes up the baby and really annoys the hell out of me as its just so loud. Don't want to go down the PIR route and don't want a dimmable switch. Any Ideas??
  13. S

    Lightning Protection Noise on earth rod

    just been spammed with testing an installations Lightning protection system out in Afghan. was installed nearly a year agbo but the lad that installed it has now done one so i get the honour of testing it. it has two sets of cabins each with 8 earth pits around them, the rods are not linked...
  14. S

    Buzzing comin from Alarm

    Hi all... Im new to the forum Im not an electrician by trade and have a question - we recently moved into a home we bought, the ex-owner had an alarm but didnt leave any code and we could not contact her so yesterday we arranged for someone to come out to look at it and give us a price for...
  15. T

    Line noise

    I have a customer who's powered hifi speakers are picking up a buzz? Could this be caused by line noise, if so how can you test for line noise and how can it be solved? Does any one have any ideas.
  16. L

    Noise using a dimmer

    Hi Just had a text message from a friend asking for some help, so thought you guys might be able to help. He has 5 x 12v downlighters in his sitting room, all working fine but he wanted a dimmer switch, so he fitted a 2 gang 400w switch, now he tells me the max on the switch is 315w on one...
  17. B

    excessive noise

    Its me:) Hi all,i have a question maybe a simple one for the majority of you.It's a domestic TT system,When testing Zs of a lighting circuit with the megger 1553,the symbol for excessive noise on the circuit keeps popping up (the wavey line, those who use the meeger will know which i mean).My...
  18. D

    MCB Loud buzzing noise

    Hi all, can anyone help please? I installed 18 downlights today, in 2 rooms with 9 in each room. and ran them on a completely new circuit with a 6amp breaker. When turning on the lights there is a very loud buzzing sound coming from the mcb ??? Both switches are dimmers. I thought perhaps the...
  19. C

    Electrical Noise

    Howdi all Started on a new installation last week, changed all skts,light fittings.re wired ktchen and cooker circuit basically replaced almost everything!! today i changed the d/b all circuits with rcbos.all of my testing was spot on until i tested the Zs of each circuit!! My Ze was 0.13...
  20. L

    Electric guitar and insane amplifier noise!?!

    Newbie here so i apologise in advance for any confusion! I know nothing about wiring but i have found diagrams etc online to look at and come to some assumptions..... I have a tokai 'springy sound' electric guitar that all seems to be wired fine and has a ground wire from the bridge to the...

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