20:10:39:23Inspection,

repair, and measurement requirments. Before testing, the utility shall inspect the utility transformer, measure grounding electrode resistance, and make and record any repairs necessary for safety. In the case of a customer-owned transformer, qualified personnel shall inspect the installation, measure grounding electrode resistance, and make and record any repairs necessary for safety. Measurements that require contact with utility or customer-owned primary wires or equipment shall be made by the utility or other qualified personnel.

Source: 42 SDR 174, effective June 21, 2016.