I am wiring for a table saw, (havnt purchased it yet) most tablesaws are wired 110/220V. If I run 10 gauge wire and run it on 110V 20A circuit am I OK? Is there any harm stepping up a guage on the off chance I want to later convert that circuit to 220V? Thanks

Hello, guys. I bought a resale house recently and found out that 2 outlets ( one at the living room and the second one at the master bedroom ) are not working. After some "brainstorm", it was found that power must go from second floor to main floor, from one outlet at the master bedroom to another one and then down to living room. It will take a lot of time to explain how I found it out, so I skip it. First outlet in the bedroom has power, but second don't. When I put power to second one , the outlet in living room is working. So the questions are : How much possibility that wire is broken at wall ? How could it happen? Can I feed the second outlet at the bedroom through outlet in the living? ( meaning that conect other outlet at the living room with not working one). Best regards