(1) All circuits shall be sufficiently protected by cut -outs placed in posit ions easily accessible to t he staff , but inaccessible to the public. All cut -outs shall be of such pattern and be fixed in such a posit ion as to admit of quick replacement.
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(2) All cut-outs shall be so constructed that fall ing fused metal cannot cause a short circuit or an igni t ion.
(3) All switches and cut -outs shall be so marked as to show clearly which circuit or lamp they control .
(4) All switches and cut -outs ceil ing roses and wall sockets lamps -holders shall have no-inflammable bases and covers. All switches and cut -outs shall have sufficient length and breadth and shall be constructed so as to prevent the risk of formation of an arc.
(5) All switches shall be of ample size to carry the current for which they are intended without heating and shall be so constructed that they sha l l not remain in any posit ion intermediate between the on and the "off" posit ion so as to permit of an arc or short circuit .