(1) An employer shall ensure that -
(a) a circuit supplying portable equipment or a socket outlet intended to supply portable equipment, including any circuit supplied by an electrical generator, and in which is used alternating current at a voltage -
(i) exceeding 125 volts, and
(ii) not exceeding 1,000 volts,
is protected by one or more residual current devices having a tripping current not exceeding 30 milliamperes operating within such period of time so as to provide the necessary protection to prevent danger to any person coming into direct or indirect contact with any live part of the circuit,
(b) portable equipment is maintained in a manner fit for safe use, and
(c) portable equipment which is -
(i) exposed to conditions causing deterioration liable to result in danger, and
(ii) supplied at a voltage exceeding 125 volts alternating current,
is -
(I) visually checked by the user before use, and
(II) periodically inspected by a competent person, appropriate to the nature location
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