I would like to hardwire a 250W/120V transformer for Low Voltage undercabinet lighting to the microwave outlet, which is 220V/30A. Is this permissible?
Although the oven specs require 30A/220V, the oven only uses 950W (doesn't sound right, but there it is in B&W at www.geappliances/advantium/models). So ampacity should not be a problem.

Second option: Can I install a 120V recepticle instead of hardwiring the transformer, using #10 wire for the tap? Can I use #10 wire with a standard 120V 15A recepticle?

Steve.