Hmm yes I see what you mean. Oops. The light circuit is a normal radial and includes 6 normal pendant lights, 2 kitchen downlighters and 1 bathroom light. So I guess 6x100W + 3x50W = 750W total even if I use 100W bulbs in the pendants. I reckoned the max for the 6A MCB would be 1440W so am I OK...