86. (1) An employer shall ensure that—

(a) work activity, including the operation, use and maintenance of electrical equipment or electrical installations, is carried out in a manner that prevents danger,

(b) before work is carried out on live electrical equipment the equipment is, where appropriate, made dead so as to prevent danger,

(c) adequate precautions are taken to prevent danger arising from—

(i) electrical equipment which has been made dead becoming live while work is carried out on or near that equipment, and

(ii) any electrical equipment inadvertently becoming live,

(d) where it is necessary for work to be carried out on or near any live part, other than one suitably covered with insulating material so as to prevent danger, of electrical equipment, a person is not engaged in work activity unless—

(i) it is unreasonable in the circumstances for it to be dead,

(ii) it is reasonable in the circumstances for such person to be at work on or near it while it is live, and

(iii) suitable precautions are taken to prevent danger, including, where necessary the provision of protective equipment.

(2) An employer shall ensure that any equipment provided under this Part for the purpose of protecting employees, or others to whom the relevant statutory provisions apply, near electrical equipment is—

(a) suitable for the use for which it is provided,

(b) maintained in a condition suitable for that use, and

(c) properly used.