Can some one here answer a loto question . Months ago operators were trained by a osha qualified trainer to teach them the loto of equipment . Now the company has arcflash study with labeling on the circuit breakers and other equipment. If there is a label and ppe is required to be worn when working in theelectrical box, is ppe required when performing a non electrical loto procedure ? The mechanics will work on the machanical parts like a compressor or pump, no electrical work is done except turning breakers off.