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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.

Issue:
Can a control transformer 9070T be used to provide power to 24V Lighting?

Product Line:
Transformers

Environment:
Control transformers Class 9070

Resolution:
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.