Rule 58.1-B3

58.1-B3)    From Hardware: Equipment cases, hangers, and other metal parts in contact therewith shall clear through bolts, arm braces of metal, and other hardware elements, by not less than 1.5 inches; except that such cases and hangers shall clear crossarm braces and crossarm through bolts by not less than 1 inch air–gap distance and 1.5 inch creepage distance.

The minimum clearance of 1.5 inches need not apply to through bolts in metallic contact with equipment cases or metal parts thereof nor to through bolts supporting heel arms, provided the portion of such through bolts extending into the climbing space is covered with non–conducting material as specified in Rule 22.2 .

Strikeout and Underline Version

Rule 58.1-B3

58.1-B3)    From Hardware: Equipment cases, hangers, and other metal parts in contact therewith shall clear through bolts, arm braces of metal, and other hardware elements, by not less than 1.5 inches; except that such cases and hangers shall clear crossarm braces and crossarm through bolts by not less than 1 inch air–gap distance and 1.5 inch creepage distance.

The minimum clearance of 1.5 inches need not apply to through bolts in metallic contact with equipment cases or metal parts thereof nor to through bolts supporting heel arms, provided the portion of such through bolts extending into the climbing space is covered with non–conducting material as specified in Rule 22.2 22.8.

Final Version

Rule 58.1-B3

58.1-B3)    From Hardware: Equipment cases, hangers, and other metal parts in contact therewith shall clear through bolts, arm braces of metal, and other hardware elements, by not less than 1.5 inches; except that such cases and hangers shall clear crossarm braces and crossarm through bolts by not less than 1 inch air–gap distance and 1.5 inch creepage distance.

The minimum clearance of 1.5 inches need not apply to through bolts in metallic contact with equipment cases or metal parts thereof nor to through bolts supporting heel arms, provided the portion of such through bolts extending into the climbing space is covered with non–conducting material as specified in Rule 22.8