The earth wires happen to be omitted for clarity and would want to be connected in the least switches and ceiling roses. The wires would also be protected via the protective outer sheath (cable). Such as, the BS 1363 plug is Utilized in the United Kingdom, while the Schuko plug https://zionakmjf.bligblogging.com/35450615/the-best-side-of-safe-electrical-wiring