Monitoring apparatus, other than for medical purposes, namely, for monitoring electrical systems; electric apparatus for commutation, namely, commutators; identification threads for electric wires; coaxial cables; cables, electric; wire connectors; condensers; capacitors; contacts, electric; electrical distribution boxes; junction boxes; electric connectors; materials for electricity mains, namely, components for electrical mains in the nature of electric wires, connectors, circuit breakers, ...