S-2.1, r. 13 - Regulation respecting occupational health and safety

Full text
218. Auxiliary circuits: The auxiliary circuits of the punch press, such as those linked to two-hand control units and solenoid valves, shall only be powered by a transformer having a secondary conductor that is insulated, i.e. grounded.
This transformer’s rated output voltage shall not exceed 120 V.
O.C. 885-2001, s. 218.