because wires can get really hot and start a fire
a. amperage and voltage b. the size and length of the wires c. voltage and resistance d. fuses and circuit breakers
A 4 pole breaker in an electrical circuit is used to disconnect power from all four wires in a three-phase system simultaneously. This differs from other types of breakers, like single pole or double pole breakers, which only disconnect power from one or two wires respectively.
Because the amount of heating depends on how much current is in the wires. So you set the CB to cut the current if it exceeds the rated current for that wire.
The load side of a panel refers to the section where the circuit breakers are connected to distribute electrical power to various devices and appliances within a building. It is where the electrical load is connected after passing through the circuit breakers for distribution.
A circuit breaker is designed to 'break' in a circuit if a short circuit (or other malfunction) occurs. This prevents overheating (or burn-out) of the circuit wires. In older systems, you would need to find which fuse wire has fused and replace it. In a circuit breaker, once the fault has been found and corrected, the breaker is simply switched back on.
To wire an electrical panel, you need to first turn off the power supply. Then, connect the incoming power wires to the main breaker. Next, connect the branch circuit wires to the individual circuit breakers. Finally, label each circuit breaker for easy identification. It is important to follow all safety guidelines and local electrical codes when wiring an electrical panel.
Ground wires, conductors, or circuits ARE NEVER FUSED. Fuses and circuit breakers are put in the wires and conductors supplying electrical current TO devices needing electrical power, and ARE NEVER PLACED IN the ground portion of the circuit between the electrical power consuming device, and the battery negative terminal.
A circuit breaker is designed to protect electrical circuits from damage caused by overcurrents. When the current exceeds a safe level, the circuit breaker automatically interrupts the flow of electricity to prevent overheating and potential fires.
The fuses restrict the amperage (electrical current/flow) of the circuit. The fuse is size according to wire size and load requirements. NEVER put in an over-sized fuse as it will allow to much amperage for the circuit which will cause overheating of the circuit and possible fire.
The color of the wires in the electrical circuit are green, black, and white.
Open circuit breakers. Poor electrical connections to the compressor, thermostat or bad wires not telling relay to cut the compressor on. Elaborate