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i have halogen lights in my kitchen(11 lights) and bathroom(5 lights) i use 12v 50w GU10 Bulbs (16 in total)?
but they keep blowing my fuses, i have an old fuse box with the 5amp fuse wire working these lights, would i be better using 240v 35w bulbs or would that be worse?
16 lamps at 50W each is pulling 7.5 amps, so no wonder your fuses are blowing at 5 amps. Changing to 240 V bulbs would still pull 4.5 amps, dangerously close to the 5 on the fuse. Basically, I’d say you need a rewring job.