Hi difference is max lamp loads, go for lowest that will be more than you need! ie if dimming 1 X 100w lamp then get a 250W dimmer as thats the smallest made, if say 3x 100W lamps you need next size up, ie 400W sw.
If you 'play safe' & just buy a 400w sw. you will find if only 100w loaded it won't dim low enough,
regards SPARX
P>S> these ratings are for normal tungsten lamps, if using halogens then allow 50% more rating (approx) for cold inrush current, also if using Low Volt fittings get a dimmer for transformer rating.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!
by sparx » Tue Jun 26, 2007 12:52 pm 