I have an outlet box wired with 2 outlets in series.I buy old food warming trays at goodwill and plug 2 into that so they are on 60v instead of 120v.Food warming trays are way too hot plugged directly into 120v.I also have a box with a lamp dimmer/outlet that I plug the food warming trays into and just dial up the output voltage until the trays are just warm enough.
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