Section 39.157. Disconnecting of fusible cut-outs before handling

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Fusible cut-outs in circuits operating at over 150 volts to ground shall be arranged in any one of the following ways:
(1) Ungrounded current-carrying parts are not touched by persons refusing the cut-outs until the fuses have been disconnected from sources of electrical energy.
(2) The cut-out may be disconnected by a suitable switch in series.
(3) The fuse may be conveniently handled by means of insulating handles or portable appliances provided for the purpose.
(4) Fusible cut-outs below 150 volts to ground and less than 60 amperes’ capacity are exempted from the provisions of this section.

                    
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