reference electrodes shall be part of this system.
Electrodes shall be
designed for 15 year life.
2.3.2
Electrical Wire and Associated Materials
2.3.2.1
Anode Connecting Wire
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NOTE: Any pinhole, cut, scratch or other damage to
the anode cable exposing bare copper to the
electrolyte will result in early failure of the
cathodic protection system. For this reason,
special, extra heavy insulation is used on anode
cable. While it is often expedient to use the same
type wire for the cathodic (negative) cable in order
to avoid a mix-up in the field, the cathode cable is
not subject to anodic failure and lesser insulation
can be used.
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Anode connecting wire shall be No. [8] [_____] AWG stranded copper wire
with type CP high molecular weight polyethylene insulation, 2.8 mm 7/64 inch
thick, 600 volt rating. Cable-to-anode contact resistance shall be 0.003
ohms maximum.
2.3.2.2
Anode Header Cable
Cable for anode header and distribution shall be [_____] AWG stranded
copper wire with type CP high molecular weight polyethylene, 2.8 mm 7/64
inch thick insulation, 600-volt rating. Cable-to-anode contact resistance
shall be 0.003 ohms maximum.
2.3.2.3
Reference Electrode Wire
Reference electrode wire shall be stranded copper wire with NFPA 70 type
RHW-USE or polyethylene insulation.
2.3.3
Conduit
Rigid galvanized steel conduit and accessories shall conform to UL 6.
Nonmetallic conduit shall conform to NEMA TC 2.
2.3.4
Test Boxes and Junction Boxes
Boxes shall be outdoor type conforming to UL 514A.
2.3.5
Polyethylene Insulation
Polyethylene insulation shall comply with the requirements of ASTM D 1248
and of the following types, classes, and grades:
2.3.5.1
High Molecular Weight Polyethylene
High molecular weight polyethylene shall be Type I, Class C, Grade E5.
2.3.5.2
High Density Polyethylene
High density polyethylene shall be Type III, Class C, Grade E3.
SECTION 13111A
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