Household wiring is done in parallel

Electrical · The Basics of Electricity · printed page 85 (PDF page 86)

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Household Wiring in Parallel Parallel Circuits for Household Wiring

Text in the illustration

even if several fixtures are controlled by one switch, they are installed in parallel (see upper right)
main power supply
15 AMP FUSE
switch

Generated explanation

This schematic depicts a main power supply feeding two fused lighting circuits, each marked with a 15-amp fuse. The upper circuit splits into two switched paths: one supplies three lamps connected in parallel, and the other supplies a single lamp. The lower circuit supplies one lamp through a separate switch. All three switches are drawn open, and each lamp has a return line ending in a ground symbol. The illustration emphasizes that multiple fixtures controlled by a single switch are still wired in parallel.

Components

main power supply 15-amp fuses switches lamps electrical conductors