The commission and its officers and employees of the commission may during all reasonable hours, after reasonable notice to the utility, enter upon any premises occupied by any utility for the purpose of making examinations and tests and exercising any power provided for in this act, and may set up and use on such premises any apparatus and appliances necessary therefor. Such public utility shall have the right to be represented at the making of such examination, tests and inspections, and shall be given sufficient time before the making thereof to secure the presence of a representative of its selection.
NMS § 62-6-23