Safety requirements for electrical stimulating (EST) equipment.
CFR · 2024-01-01 · US · Title 9
(a) (b) (2) (3) (i) A red light that flashes distinctly during the operating cycle of the stimulating equipment. (ii) An ANSI Z53.1-Color Code sign reading (a) “Danger Electrical Hazard” for stimulating voltage below 50 or (b) “Danger High Voltage” for stimulating voltage above 50. (iii) An emergency stop button. (4) (c) (2) (3) (d) (2) The electric wires attached to a clamp or probe shall not allow for contact between the probe or clamp and an electrical ground and shall not extend outside the enclosure.
official document · source cfr-2024 · id 9:§ 307.7