AC plugs have a wide blade and narrow blade, plus middle ground contact. Should AC hot(black) got to the wide blade recptacle contact or narrow? I want to check my AC for improper conection, which may also cause circuitous grounding.
Dear people: thanks for your help! BTW, I was NOT referring to channel polarity (phase) but proper house wiring to the AC receptacles, to minimize possibility of hum/noise.
Just curious: does anybody know the standards' rationale in specifying the narrow blade for hot (black)? Seems that the return path (neutral)is getting the larger surface area.
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