§ 150.23 Work Standards
   (a)   Commercial Wiring­Service wires for commercial buildings shall be in conduit and no more than six (6) outlets shall be installed on any one (1) circuit.
   (b)   Residential Wiring­Not more than nine (9) outlets shall be installed on any one (1) circuit with a maximum demand of 1500 watts on #12 wire. No wire smaller than #14 shall be permitted.
   (c)   Grounding­All ground connections shall be made with an approved clamp to a nonferrous rod at least 5/8 inch diameter and eight (8) feet in length.
   The ground wire shall be at least #6 enclosed in EMT and supported along its entire length.