To ensure safety, specifying engineers and contractors must educate themselves on A2L safety requirements and risk mitigation ...

We have series circuits and parallel circuits. Now in a series circuit, all the electrical components are connected by wires in one loop. So there's only one route for the current to flow.

You can put all kinds of other components in the circuit ... So it helps to think of an electrical circuit a bit like the central heating system in a house. We call this comparison a model.