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Series vs parallel in homes
Beginner
Appliances connect in parallel to get full voltage.
Appliances in parallel each get the full mains voltage and work independently. Christmas lights in series all go out if one fails.
A kettle and a toaster on the same circuit draw the sum of their currents.
Too many appliances can overload the circuit.
In more detail
Home circuits use parallel wiring so appliances work independently at mains voltage. Series circuits are used for some decorative lights, where the failure of one bulb affects the whole string.
Real-world uses
- Lighting and power circuits in houses are wired in parallel.
- Older Christmas light strings were wired in series.
- Electrical sockets in a home are wired in parallel, so each appliance receives the full mains voltage.
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Frequently asked questions
Why are homes not wired in series?
Series wiring would give each appliance a fraction of the voltage, and failure of one would switch off all.
Can I connect appliances in series?
No, it can lead to unsafe voltages and poor performance.
Why are lights and sockets not in series?
In series, one device failing would stop all the others, and each would receive only part of the voltage.
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