In uk.d-i-y, Owain wrote:
"Colin" wrote
| 15 lights
| 50W per light

That'll be 2 new lighting circuits then, as each point must be rated at 100W
.
To be fair, not if they're limited to taking lamps only available in
50W max - such as LV halogens. Haven't exhaustively scanned for any GU10-style
mains halogens above 50W, but if they don't exist then 50W per lighting
point is reasonable for them too. Not that I disagree with the notion that
15 * 50W of downlighting is likely to be a right PITA - too bright where
the beams fall, too dim where they don't, i.e. not diffused enough.

Stefek