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Can a 9070 Type T control power transformer or a general purpose transformer be used to provide power for 24v lighting. 120v to 24v applicaition.

No! The NEC requires the transformer feeding the low voltage lighting system to be a part of the UL listed lighting system as assembled by the Original Equipment Manufacturer (OEM). A contractor, distributor, or end user cannot assemble their own low voltage lighting system and comply with the NEC without going through UL. If the OEM has a particular transformer listed in their UL file, then that unit may be used.

CTA-ID : 2009350
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