Section 73(2) in The Indian Electricity Rules, 1956
(2)(a)In the case of non-shock-proof equipment, overhead high voltage conductors, unless suitably guarded against personal contact, shall be adequately spaced and high voltage leads on tilting-tables and fluroscopes shall be adequately insulated or so surrounded by barriers as to prevent inadvertent contact.(b)The low voltage circuit of the step up transformer shall contain a manually operated control device having overload protection in addition to the over-current device for circuit protection, and these devices shall have no exposed live parts and for diagnostic work there shall be an additional switch in the said circuit, which shall be of one of the following types:-(i)a switch with a spring or other mechanism that will open automatically except while held close by the operator, or(ii)a time switch which will open automatically after a definite period of time for which it has been set.(c)If more than one piece of apparatus be operated from the same high or extra-high voltage source each shall be provided with a high or extra-high voltage switch to give independent control.(d)Low frequency current-carrying parts of a machine of the quenched-gap or open gap type shall be so insulated or guarded that they cannot be touched during operation, the high frequency circuit proper which delivers high-frequency current normally for the therapeutic purposes, being exempted.(e)All X-ray generators having capacitors shall have suitable means for discharging the capacitors manually.(f)Except in the case of self-contained units, all 200 peak KV or higher, X-ray generators shall have a sphere gap installed in the high voltage system adjusted so that it will break down on over-voltage surges.
