DIYbanter - View Single Post

wrote:

I have been in my 1930's semi for over a year and since moving in I
have noticed that on any lighting circuit in the house (on different
fuseways), the lights seem to momentarily either dim or flicker maybe
once or twice during the evening.

its normal.

I have since installed a new radial lamp circuit in the living room (on
a spare fuseway in the fusebox) and this is affected in the same way.

Other electrical applicances (tv, stereo etc..) appear unaffected.

their operation is not as dependant on mains v as filament bulbs. TVs
usually use stabilised supplies, etc.

Since the ligthing circuits are all on separate circuits and fuseways I
can only deduce that it is the electrical supply coming into the house
and so there will be nothing I can do about it?

correct, if you mean about the momentary v dip. If its the visual
effect you dont like, to be honest the only sensible advice forget
about it.

These occur when heavy loads switch on - not so much heating loads, but
high inrush loads, such as large motors, devices with largish
capacitors like fl light banks, big halogen bulbs, large transformers,
anything else that takes a heavy inrush current at switch on.

They also tend to happe a lot before power cuts, so if its going on for
an hour you know what may come next.

NT