Practical Wiring PDF

## PRACTICAL WIRING As you know, current can flow around any closed conducting loop. Each device in a parallel circuit can be controlled by its own switch. When one appliance is turned on, only that appliance turns on and the others still remain off. This is a parallel circuit. Notice that when...

## PRACTICAL WIRING As you know, current can flow around any closed conducting loop. Each device in a parallel circuit can be controlled by its own switch. When one appliance is turned on, only that appliance turns on and the others still remain off. This is a parallel circuit. Notice that when all the appliances are on (there could be many), all the current is passing through the conductor near the source. If too much current flows by, the wire can get very hot. If all devices in the house were connected to the same circuit, this would happen. **Image:** A diagram of a burnt out electrical outlet In a residence, it is practical to install many separate parallel circuits in the building. However, the electricity supply to the building must be made of large cables to handle the total current supplied to the house. Large cables handle large amounts of current compared to smaller wires. **Image:** A diagram of a house with an electrical panel on the exterior of the house.