Hi,

I have a dryer outlet in my garage that I do not use. I tested the outlet with a multimeter and it is a 240v outlet. In the main breaker box this outlet has 2 - 30 amp breakers. I would like to move the the 240v line from my garage to my shed 100 feet from my main breaker box to run a 23 amp, 5hp, table saw. The table saw would be the only tool plugged into the 240v line. The shed currently has a 120v line running underground from the main breaker box that was installed by a licensed electrician. Is it possible to do what I want to do? Many thanks for any help.

 

Unless your shed is attached to your house, no you can't.
You may have only one feed to a building.
What you will have to do is run 50 or 60A to your shed and install a sub panel.

If you don't use table saw any other devices at the same time installing sub panel on 30A and run both 240V and 120V off this sub panel. But, your lights might flicker when running table saw.

Also, your existing 240V line must be 4 wire. You cannot extend 3 wire 120V/240V unless you will be using 240V only.

 

Thank you very much! Looks like I will be calling the licensed electrician