**Original Version**

Rule 59.4-B1

**59.4-B****1) Location:**** **The common neutral grid
system shall be grounded at intervals not greater than 1500 feet. On
branch circuits extending from a grid, where return loop paths are not available,
the common neutral line conductor shall be grounded at intervals not greater
than 800 feet. Each transformer installation on a branch circuit without
a loop return shall be so located that there will be one or more metallic
water pipe system grounds, each of a resistance not greater than 3 ½
ohms, on each side of the transformer installation.

**Strikeout and Underline Version**

Rule 59.4-B1

**59.4-B****1) Location:** The common neutral grid
system shall be grounded at intervals not greater than ~~1500~~
__1000__ feet. On branch circuits extending from a grid, where
return loop paths are not available, the common neutral line conductor shall
be grounded at intervals not greater than ~~800~~ __500__
feet. Each transformer installation on a branch circuit without a
loop return shall be so located that there will be __not less than__ one
~~or more metallic water pipe system~~ grounds, each of
a resistance not greater than 3 ½ ohms, on each side of the transformer
installation.

**Final Version**

Rule 59.4-B1

**59.4-B****1) Location:** The common neutral grid
system shall be grounded at intervals not greater than 1000 feet. On
branch circuits extending from a grid, where return loop paths are not available,
the common neutral line conductor shall be grounded at intervals not greater
than 500 feet. Each transformer installation on a branch circuit without
a loop return shall be so located that there will be not less than one grounds,
each of a resistance not greater than 3 ½ ohms, on each side of the
transformer installation.