Section R. 408.17222 - Machinery and equipment installationRule 7222.
(1) Electrically powered machinery or equipment, other than double insulated equipment, shall be grounded.(2) Nonportable machinery or equipment shall be secured to the floor, platform, table, or bench to prevent displacement or tipping.(3) Machinery or equipment shall be equipped with a disconnect switch which shall be locked in the off position, unless the machinery or equipment is equipped with a plug-in cord which shall be disconnected and tagged, when the machinery or equipment is repaired or serviced if unexpected motion would cause injury.(4) Machinery and equipment equipped with a foot control shall be provided with a cover or guard to prevent unintentional operation of the machinery or equipment where such operation would cause injury. The cover or guard shall be capable of withstanding a static load of 200 pounds without permanent deformation. The edges of the cover of the guard shall be rolled, broad, or covered to prevent injury or discomfort due to contact by the operator's foot or leg.Mich. Admin. Code R. 408.17222