Powered outlet on table saw outfeed table?
You are not altering any devices other than an extension cord, namely cutting the receptacle end off of it and connecting up something of your choice (a junction box).
You can buy power strip extension cords that have a switch to control their receptacles so you don't need to alter anything, just mount the power strip receptacle block to your table.
The disadvantages of crab apple trees. In summer, the apples are too sour to pick and eat. In winter the birds come and leave dropping all over the place.