Originally Posted by Troy32
I am building a wood shop and have a table saw and dust collector. They are 110/220. I will be wiring them for 220. They pull 13 amps each at 110 and 6.5 at 220. Together at 220 they will pull 13 amps.
A lot of people say they should both be on their own dedicated circuit. What is the benefit? Why not just put them both on one 20 amp 220 circuit as combined they will be far below 80% of the 20 amp draw?
Unless there is some benefit I would rather run one line and save space in the box and only use one double pole breaker.
Troy...I understand what your trying to do.....and as a fellow woodworker, I too have a lot of stuff in the garage....
As everyone said, no requirement to have a dedicated ckt.....
But...one that never changes....is change.....your power tools wear out....you upgrade....etc.
One of the things you will notice if you tie them together is that you will get a slight power drop on the saw when the dust collector kicks in.....even though the current draw for the saw is a little over 6 amps....when the saw kicks in, your going to get enough voltage drop on the total ckt to notice.
Personally....I wouldn't do it.....yea, it's a bit more work to run another ckt....but in the long run, it will be more flexible.