Question to Ask the Workplace Doctors about OSHA and radios:
Is there an OSHA regulation that radios in the workplace need to be grounded or have a three-prong grounded electrical cord?
Signed, Want To Know
Dear Want To Know:
Radios in the workplace would not need to have a three prong grounded electrical cord as long as they are UL listed and approved. The standard 1910.305(g)(6)(vii)(B) states that equipment need not be grounded if it is a listed and labeled portable tool or appliance, if protected by an approved system of double insulation, or its equivalent, and distinctively marked. Exceptions to this could apply if the device was being used on a wet or a metal floor, or some other hazardous location.
Bob Byers, Guest Respondent OSHA 503 Outreach Trainer Customized Training & Development LLC