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How to daisy chain lights 
Find out the maximum wattage your recessed light fixtures can individually consume. 
This may differ from the wattage of the light bulb in the fixture. 
If you are not sure of the fixture maximum wattage, use 100 watts per fixture as an estimate.
Determine whether the total wattage of new and existing lights will overload their shared circuit. If using a dimmer switch to control your lights, for example, most of these switches can handle up to 600 watts.