In an AC supply why does two single phase 110V wires connected to hot and neutral produces 220V
simulate this circuit &ndash; Schematic created using CircuitLab
Figure 1. On a split-phase supply L1 and L2 are 180° out of phase.

L1 - N = 110 V.
L2 - N = 110 V.
L1 - L2 = 220 V.

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