Sorry if this is considered a necro, but I would think that things like how well the outlets are bonded (meaning "ground" bond), if the electrician used "backstabs" or the side screws to connect the wires to the outlet, the state of the outlet itself (old and possibly a bit corroded vs brand-new and shiny), whether the house is old and the wiring is in metal-flex conduit or wired with Romex (which probably affects "sheilding" and impedance), and if the breakers are basic thermal breakers (that only have the hot connected) vs new wiring requirements that require AFCI breakers that have both hots and neutrals connected to breakers, and many circuits now require GFCI breakers, too. Older houses tend to have fewer circuits, with more outlets/rooms per circuit, whereas newer houses tend to have more circuits and breakers. I just remodeled a duplex (~2000k feet) that had all outlets in 2 bedrooms, den, living room, and bathrooms on one circuit, and all lighting throughout the whole place on another circuit. Only the kitchen outlets had their own circuit. All breakers were the basic thermal kind, so all neutrals are tied together on the panel directly. That kind of wiring is not even allowed per modern building code!
On the other hand, the wiring connections were all crimped, not tied together tightly via wire nuts, and they tended to be fairly loose. All of the old outlets were a little corroded, and all of the wiring connections were "backstabbed", which aren't as tight or secure as using side screws. I reconnected most of the outlet wiring and replaced every single outlet.
I think it would matter more where the outlets are in the wiring circuit more than where they are physically laid out in the room and the overall state and design of the wiring itself. Without a wiring diagram and specifics of installation, it's hard to draw conclusions.
On the other hand, the wiring connections were all crimped, not tied together tightly via wire nuts, and they tended to be fairly loose. All of the old outlets were a little corroded, and all of the wiring connections were "backstabbed", which aren't as tight or secure as using side screws. I reconnected most of the outlet wiring and replaced every single outlet.
I think it would matter more where the outlets are in the wiring circuit more than where they are physically laid out in the room and the overall state and design of the wiring itself. Without a wiring diagram and specifics of installation, it's hard to draw conclusions.
