77 Ill. Adm. Code 205.1760
Grounding
Section 205
Section 205.1760Â Grounding
In areas used for patient care
or treatment, all receptacles operating at over 100 volts shall be grounded by
an insulated copper conductor, sized in accordance with Table 250-95 of NFPA 70
(see Section 205.115(a)(1)(B)), and installed with the branch conductors
supplying these receptacles.