Rewiring-going through bulbs very quickly.

pokey128

hi
We got completely rewired a couple of months ago and since then we seem to be changing bulbs all the time-we've had to change every bulb at least once since the work was done.
Can anyone suggest a reason for this? Should I get the Electricia back out?
thanks

antenna

Lighting should be on a ring circuit,if lights are fed along a spur then the first bulbs have more power drawn thru them.

shandypants5

antenna wrote: »

Lighting should be on a ring circuit,if lights are fed along a spur then the first bulbs have more power drawn thru them.

House lighting is NOT normaly wired as a ring circuit and the first lamp on a radial circuit does NOT have more power drawn through it.

pokey128

Thanks both,
I have no idea what any of that really means I'm afraid!

shandypants5

It just means that house sockets are wired in a loop type circuit and house lights are usually wired in a straight line or "radial" circuit.

Either wiring system is ok and should not cause the lamps to blow.

I would say get the sparky back in to check, if you have had a full rewire then its possible that a connection may have been left loose somewhere and this may cause lamps to blow.

diable

Bulbs are what you plant in the garden.......

What type of lamps are you using are they halogen ones by any chance?

pokey128

Sorry, I meant light bulbs, I didnt realise that wasnt what they were called! They are indeed halogen ones-the sort that look like "normal' ones though rather than the wee ones that go under cupboards.
will speak to the electrician

fwor

shandypants5 wrote: »

the first lamp on a radial circuit does NOT have more power drawn through it.

Just to add a touch of pedantry, the first lamp on a radial circuit ~will~ draw more power, all other things being equal.

This is because each length of wire along the radial has resistance, and so there is an increasing voltage drop the further down the radial you go.

However, I should add that the effect will be tiny in normal conditions...

OP - it is quite likely that the old wiring had greater losses than the new, and that the lamps are now operating at a slightly higher voltage, which may account for more failures.

diable

Just to be silly light bulbs are small ones you plant in the garden

Are these lamps in the ceiling or hang from a pendant? Halogen ones can heat far too much and have a shorter life but if you mean the one that looks like a normal lamp but the filament inside has been replaced by something resembling the end of a car headlight lamp then I have found that these tend to blow fairly easily as I knock one slightly a while back and the f***** blew and it had only been in use for 10 minutes.

katejo

About 18 months ago I had an electrician round. He didn't rewire but he fitted a modern fuse box and put up some new lights with halogen bulbs (GU ones). Each light has 3 bulbs. The first few bulbs blew very quickly but now it has settled down and they last much longer.

dil1976

fwor wrote: »

Just to add a touch of pedantry, the first lamp on a radial circuit ~will~ draw more power, all other things being equal.

How is this possible unless the laws of physics have changed, a 60 watt lamp will always draw 60 watts regardless of what voltage is being applied to it.