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#alternating current #ac power #bidirectional current #electricity flow #wall socket power #mains electricity

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#socket faceplate #power source #outlet electricity #wall power #mains electricity

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#socket holes #electric outlet #mains electricity #two holes #outlet face

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#grid connection #utility power #mains electricity #plugged in #standard power #electricity supply #connected home

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#electricity supply #powering cities #urban electricity #light and power #mains electricity #utility power #distribution network