All receptacles are wired in parallel. The terms series and parallel are often misused when talking about house wiring. The "three wire" circuits they are referring to are multi-wire branch circuits. Series Or Parallel Outlets - Electrical - DIY Chatroom Home Was this helpful? Electrical Circuit Basis: Series vs. Parallel Circuits Electrical circuits can be wired in series or in parallel—most household circuits are parallel circuits. Wiring Diagrams for Multiple Receptacle Outlets - Do-it Series or Parallel. It's common to describe household wall receptacles that are wired together using the device terminals as wired in series. But, in fact, all household receptacles are always wired in parallel, and never in series. In a series circuit, current must pass through a load at each device.
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