- Circuit Breakers- an automatic device for stopping the flow of current in an electric as a safety measure
- - A fuse operates once and then must be replaced but circuit breakers can be reset; thermal magnetic circuit breakers sense the overheating from overcurrent and stop the flow of current to prevent accidents; magnetic uses a solenoid where the pulling force increases as the current increases, as the solenoid increases beyong the rating of a circuit breaker contacts solenoid's pull releases the latch and this stops the current flow.
- Divide the Wattage by the voltage to determine current in amps; Multiply amps by 1.25 (National Electrical Code requires protection at 125%); Install circuit breakers with atleast that value, if not exactly right then the next standard size up.
- A safe low voltage from th mains supply can be obtained by using a transformer
https://i1.sndcdn.com/artworks-000019062529-2syv5i-t500x500.jpg?e76cf77
(how a three pin plug is wired) Blue - neutral, brown - live, green and yellow - Earth
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