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Hi all, I've wired upstairs bathrooms (3) with Enlite E5 led lamps - all good except possibly the main bathroom which is on the bright side (dimmer switch will sort that out). I have 3 rooms downstairs to do now - kitchen, office & utility. I am keen to inject a bit more science into the calcs here. So I know the lumens & angle of the Enlite E5's and room / desk / worktop heights but what I can't seem to get sorted is how big the splay is on the floor / desk / worktop. I know its a cone of light of various depths (floor / desk / worktop) - does anyone know what the formula for this is? I've found one or two sites that work out the splay but they use their led's and I'd like to get it onto a spreadsheet so I can look at various manufacturers alternative bulbs. Thanks for any light you can shed on the required calculations. CC
