I jumped in on this pretty late, but how many conductors are in the cable
you are using to power up your saw? I would be surprised if you actually
had a neutral going there, but if you did, you could pull 120 into a
receptacle. I wouldnt want it to be used at the same time the saw was
working though.

You are correct...only 3 cables...no neutral, so 120 out of the question.
And no, I had not planned on running them at the same time. My fixed
extension is working just fine and a lot less hassle!

Steve