Trigger circuits are now commonly called flip-flops. I linked a page with more information.
Parallel circuit
Two or more electrical components connected together is called a circuit. Depending on how components are connected, it is either an open circuit, closed circuit, or a short circuit.
A circuit that has more than one path for the electric current to flow is called a parallel circuit. In a parallel circuit, each component is connected to the same two points, allowing for multiple paths for the current to travel. This configuration is commonly used in household wiring and electronics to power multiple devices independently.
it is commonly known as the table sugar.
The condition usually happens in the ring and middle fingers and is more common in women, typically over age 30.
A circuit in which electricity only flows in one path is called a series circuit.
A circuit that has more than one path for the current to flow is a parallel circuit. The circuit must have two or more paths to be considered parallel. A circuit that has only one current path through multiple components is a series circuit.
Generally, a circuit with multiple paths is called "parallel" because of the structure of the wiring involved. Parallel circuits have identical voltage on all paths, while current through each path is variable; whereas series circuits, having only one path, has constant current, but variable voltage.
Ethernet
An RC CB is a Residual Current Circuit Breaker. It is another name for something more commonly known as an RCD (Residual Current Device). An EL CB is an Earth Leakage Circuit Breaker. It is another name for something more commonly known as a GFCI (Ground Fault Circuit Breaker). For more information on these electrical safety and circuit protection devices please see the answer to the Related Question shown below.
As more bulbs are turned on in a ring main circuit at night, the total current drawn from the circuit increases. This can lead to a drop in voltage across the bulbs if the circuit is not designed to handle the additional load. If the current exceeds the circuit's capacity, it may trigger protective devices like circuit breakers or fuses, potentially causing them to trip. Additionally, prolonged overloading can lead to overheating and damage to the wiring.
The term is "circuit" (from the same root as circle) An electric circuit must be uninterrupted for the current to flow. (This is why circuit-breakers are also called circuit-interruptors.)