All the devices have their own significance and while pairing devices together you have to see that you group only those which have almost the same current rating and are not used together during flight, landing or take off. It’s ideal that you don’t group any devices together and but if you have to group them together, make sure that they are not used together, which will obviously break the circuit and also make sure that they are of the same current rating so that you use the correct circuit breaker.