Any reason for this ?

It sounds to me to be a duff connection somewhere on your side of the installation.

If it affects all of the ground floor lights it must be something common to the whole circuit. Things like connections in you fuse box, possibly connections in a central joint box or at the first light on the circuit etc.

You could try swapping one of the G9 fittings to a standard flex drop, but I think it's most likely that this will also suffer the same problem as your existing lights.

If you are not confident to tackle this your self then as the fault is on your part of the installation, it is a job for an electrician rather than the supply company.
 
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Had an electrician call and look at the problem, he checked inside the cu and said everything inside was ok no loose wires and no shared neutrals etc., checked voltage which was 237 on the incoming wires and also the same at the light switches. he removed a couple of light fittings and switches and said all was ok. But i am still at aloss as to why we are still experiencing the same problem, is their anything else the electrician should have checked ? as i just took his word as to everything was ok.
 
Did he check the incoming voltage (along with observing the lights) when any significant electrical loads were switched on in your property (cooker, shower, immersion, kettle ) ?
 
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He just checked the voltage whilst oserving the lights, we do not have an immersion only a combi boiler, our shower is not electric, and this problem we have happens without any electrical surge due to the kettle or cooker.
 
Still having same problem, had electrician call as i have said and he said everything ok, so what should i do now ??, call our electricity supplier and have them check their side of the meter and will this cost ? Any suggestions would be most appreciative as i am getting so frustrated as to why this problem exists.
 
How did you get on asking the neighbours for their experiences?
Suggest keeping a diary'; note times& date when problems seen plus anything else such as weather.
Do all members of the family agree that the lights are dim?
Have you tried to measure the change in light levels/colour? If no access to a meter, perhaps you could use the camera/phone to get pictures of normal/dim to compare.
Any fluorescent lights? Do they flicker when the other lights dim?
No answers here, but the more information you can give to the experts, the greater the chances of tracing problems quickly.
 
Have not asked any neighbours as dont really bother with any of them, lights seem more duller when the gas central heating is on even though the wiring for the boiler timer etc is on a seperate circuit so the electrician said that could be ruled out as the problem. All the family totally agree, only a fluorescent light in the bathroom upstairs which is not affected, i have said previously only the downstairs lights are affected which are two flush ceiling lights and two wall lights which take G9 halogen bulbs. Also the later in the night it gets say after 11 pm the lights seem normal.
 
RF Lighting said:
It sounds to me to be a duff connection somewhere on your side of the installation.

If it affects all of the ground floor lights it must be something common to the whole circuit. Things like connections in you fuse box, possibly connections in a central joint box or at the first light on the circuit etc.
Click to expand...

I totally agree, definitely sounds like a fault on the circuit if all upstairs lights are ok.

If it's better after 11pm is there something you do differently around that time? Switch off the garden light, porch light etc? both additions that could be wired incorrectly
 
I would suggest checking the voltage at one of the lights at the same time as the dimming of the lights occurs.
 
Yes the central heating goes off about 11pm but would this have an affect on the lighting, its wired into a seperate MCB for the timer etc. and its gas central heating ?
 
Thoughts (!?)
Are you sure all heating electrical links are through the same MCB? Could there be links to the pump, fans etc via the G/F lighting circuit (including earths)? Could the pump have it's neutral into the lighting circuit with a badly made connection?
Have you tried turning off the central heating when the lights are dim? Do they improve? If so, does this happen immediately or when any fans, pumps finish their run?
 
D

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