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These lights are not standard 110V AC lights, but use 12V bulbs. In fact, each element consists of the light fixture itself, plus the associated 110V -> 12V transformer. In any transformer, there will be some loss of energy (no transformer has 100% efficiency), so some heat loss is to be expected. Moreover, in the manufacturer's documentation it is stated ...


Some approved insulations (such as polystyrene) have a lower heat rating than standard NM cable. Since all conventional insulations can touch an IC rated fixture, cable should be no problem.

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