I wrote regarding an electrical issue I had where I had to notch the face of a beam maybe 3/8" or slightly less to accomodate a piece of romex. I notched the beam maybe from the center of the face down to the bottom edge. One fellow wrote that this is not a good idea. because it involved the bottom edge. I wrote him back to ask more but wonder what the rule of thumb is for notching beams. My understanding is that it is not a problem as long as the notch is less that 1/6" thickiness of the beam. The beam is maybe
4X6 or so. Do I have a problem? My only other option was to drill up and through the beam and I didn't want to do that or nail romex on the face of the beam, bury in drywall and do an immediate 90 degree bend which I really did not want to do.