croiser les polarités

19:09 Dec 3, 2023 

Here's a reference to circuit breakers and how they work.
https://electronics.howstuffworks.com/circuit-breaker.htm
It mentions the importance of the wiring of each plug, socket and fuse in home and office appliances as an error can be potentially dangerous and harmful. Also, it explains how important it is to ensure the correct wiring and installation of circuit breakers. They should prevent risks of harm, with an automatic switch which closes down the electrical circuit at the fuse box, if an appliance is installed in a faulty manner as it could overheat and cause a danger. The reference explains the importance of the exact and correct connection of a circuit breaker, which must not be faulty.

14:16 Dec 1, 2023 

It does say it concerns "circuit breakers".

11:55 Dec 1, 2023 

It might be about the important consistency of the installation of batteries in connection with their positive and negative terminals which need to be positioned correctly.

11:22 Nov 30, 2023 

Inverting polarities sounds OK to me.