19.—(1) Every employer shall ensure that where appropriate work equipment is provided with suitable means to isolate it from all its sources of energy.
(2) Without prejudice to the generality of paragraph (1), the means mentioned in that paragraph shall not be suitable unless they are clearly identifiable and readily accessible.
(3) Every employer shall take appropriate measures to ensure that re-connection of any energy source to work equipment does not expose any person using the work equipment to any risk to his health or safety.