Question about Electrical Supplies
I'm an electrician and can help you with this question. I'm not quite sure of your question as there is no mention of a dimmer - yet it is in the dimmer category. A transformer rated at 70W should be able to support 56W of lighting, as the lights represent 80% of the capacity of a 70W transformer. Your terminology is a bit unclear however.
Transformers are usually rated in VA, not watts - but if you've got one that says it is rated for 70 watts, this is generally the maximum power it will handle, NOT "minimum". I guess I would feel more comfortable knowing what the transformer is a part of and the type of lights / fixtures you're trying to use with it.
Some lamp types (fluorescent, and other types with a "ballast" or tansformer) are not supposed to be placed on a dimmer circuit - *unless* it is labeled specifically as usable on a dimmer circuit.
I am imagining that you are attempting to use a line voltage track and light fixtures that have a built-in transformer (making them low voltage lights really) on a dimmer, or some other arrangement whereby you "dim" the input of a transformer to control the brightness of the low voltage lights. Regardless of the wattage of the transformer or lights - doing so will create a fire hazard and should not be done. Transformers are designed to work at specific voltage and frequencies (60Hz) and should never be connected to a mismatched power source.
If I am missing your question, please provide a "bigger picture" of what you have and what you are trying to do.
I hope this helps & good luck!
Posted on Jan 16, 2013
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Posted on Jan 02, 2017
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