What are the common electrical symbols?

Basic Electrical Symbols

• Ground or Earth. A ground symbol (IEC symbol 5017) identifies a ground terminal.
• Resistor. A resistor reduces current flow.
• Switch. Disconnects the current when open.
• Capacitor. A capacitor symbol shows two terminals running into plates.
• Fuse.
• Antenna.
• Inductor.
• Transformer.

What is the Australian standard for electrical symbols?

Australian and New Zealand Standards (AS/NZS 1102:101 to 110:1997Graphical Symbols for electrotechnology documentation), which are aligned to International Standards, apply to the symbols that are used on electrical drawings.

How does a circuit breaker protect a circuit?

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced,…

What is the definition of circuit breaker?

Definition of circuit breaker : a switch that automatically interrupts the current of an overloaded electric circuit : a switch that automatically stops the flow of electricity to a place or device if the current becomes too strong or another dangerous problem occurs

What is a circuit breaker used for?

A circuit breaker is an electrical device used in an electrical panel that monitors and controls the amount of amperes (amps) being sent through the electrical wiring. Circuit breakers come in a variety of sizes. For instance, 10, 15 and 20 amp breakers are used for most power and lighting needs in the typical home.

What do the breaker circuits use?

More advanced circuit breakers use electronic components (semiconductor devices) to monitor current levels rather than simple electrical devices. These elements are a lot more precise, and they shut down the circuit more quickly, but they are also a lot more expensive. For this reason, most houses still use conventional electric circuit breakers.