Section R. 408.16246 - Dielectric sealingRule 6246.
(1) An electrical power pack or oscillator cabinet shall have the access doors interlocked in a manner which will cut the power when the doors are opened and shall have a mechanical shorting bar which will automatically ground out the residual energy.(2) An employee shall be protected by an interlocked and grounded shield that is constructed to block the direct passage of the stray currents moving out of the intended path.(3) The point of operation shall also be guarded as prescribed by the provisions of R 408.16245(1). The movable or fixed barrier and the shield required in subrule (2) of this rule may be the same if it accomplishes both purposes.Mich. Admin. Code R. 408.16246