The earth wires happen to be omitted for clarity and would wish to become linked in any way switches and ceiling roses. The wires would also be protected because of the protecting outer sheath (cable). If you are doing opt for a dimmer switch, It's also wise to recognize that https://hectorpjaqh.blognody.com/37096889/how-much-you-need-to-expect-you-ll-pay-for-a-good-smart-light-switch-white-clear-frame