Hi, I've noticed that when I run the shower (gainsborough energy 2000), the bathroom light dims slightly then brightens when its switched off. It has always done this, but I just wondered if this is normal? Cheers, Bramblestick
On Tue, 27 Mar 2007 22:05:51 GMT, "Bramble-Stick" mused:
It can be normal, and usually is.
It's not desirable and may point to a fault in your wiring or your supply.
Owain
Chances are it is probably normal. Showers place a very high current load on the supply, which will in effect try to pull the voltage down a bit. The more resistance there is in the wires supplying your property, the more noticeable the voltage drop. Ordinary filament bulbs tend to show up even quite small voltages changes as a change in brightness - most noticeable when it is a big load that switched on or off.
(with our relatively "floppy" supply via overhead lines, even a 3kW kettle will dim the lights a little)
and lights on a dimmer are evn more sensitive - you don't just get a lower voltage but for a shorter duty cycle as well.
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