I was installing baseboard in my basement with a 16 gauge finish nailer and must have hit a wire in some flex conduit in the wall - the breaker (newer arc fault type) blew. I removed the nail, reset the breaker and seems to be OK. I know this isn't a good thing, but hoping my fears are wrong. Do I need to open up the wall and repair, or is there any chance this can be left alone. Again, this is Flex Conduit with a newer arc fault breaker type. If I do need to repair, what is the best way to handle it. BTW: I know there will be questions how this could have happened. Previous owner installed romex in shallow walls near the bottom. I'm remodeling the basement, I decided to replace the romex with flex conduit because I thought it would protect against nails! Guess I was wrong! Thanks

For an antique radio I need a 3 volt power supply that provides at least 6 amps (6 tubes at 1 amp each). I have a cheap 110 volt power supply but it produces a lot of static in all radios thus I need a battery powered system. I can get a 6 volt battery like the one shown in my attachment. To me it appears that it would have enough power to power the radio for approximately two hours (correct me if I am wrong). My problem is how do I reduce the six volts down to a variable voltage of approximately zero up to the max of six volts. I would normally use three volts but would really like to have it variable. Can I do something as simple as putting a potentiometer or rheostat in the circuit and still maintain my required 6 amps that I need or do I need something more elaborate. Your advice in detail would be greatly appreciated. Cheers and stay well, Don