Are electrical wires connected throughout a house or apartment? Or

Are electrical wires connected throughout a house or apartment? Or are they all connected individually to a power source? For example, are the wires in a light switch connected to the main

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Are electrical wires connected throughout a house or apartment? Or are they all connected individually to a power source? For example, are the wires in a light switch connected to the main

Why do some US neighborhoods have a lot of electric wires from the pole to the homes (so many that it looks like an electric jungle), but some neighborhoods don't have electric

Why do I see the exposure of the actual wires in some spots on the outside power line that runs to the utility pole? - Quora

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How to connect a wire with power when it's a 4-wire there red, blue, white, and black - Quora

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