10-2 use silver paste to coat the wire ends before attaching to breaker ,better yet
would be to install breaker panel sub box near where it enters wall and use a grounding rod driven in to the ground 12' 5/8" dia.,then you eliminate ground interference from main supply and of course use a audiophile outlet preferably quadplex and also use silver paste with the connection,helps prevent corrosion in the future ,had very good results with this method.
would be to install breaker panel sub box near where it enters wall and use a grounding rod driven in to the ground 12' 5/8" dia.,then you eliminate ground interference from main supply and of course use a audiophile outlet preferably quadplex and also use silver paste with the connection,helps prevent corrosion in the future ,had very good results with this method.