Installation Guide

Supplier General Requirements and Equipment Competencies
Itron requires that all suppliers have previous telecom experience and have the following
equipment and resources:
■
Certified, Clamp-On Ground Resistance testing devices (or equivalent)
■
Competent trained operators readily available
■
Megger DET14C/24C Clamp-on Ground Resistance Tester, or equivalent
■
Maintain the capability to document ground resistance testing data by digital photograph and
be able to convert the photos to Adobe Acrobat files, to be transmitted within 24 hours of
completing testing.
Exterior Grounding System Design for Concentrators
Materials making up the grounding and bonding system must meet the following minimum
standards:
■
Wire underground. Minimum No. 2 American Wire Gauge (AWG) bare, solid, annealed,
tinned copper wire (BTCW) but sized in accordance with NEC Table
250.66. Under no circumstances is stranded wire acceptable. Install all buried wire to meet
minimum bend radius. Sharp bends and kinks are never acceptable.
Note: When any grounding or bonding wire runs through concrete, sleeve it in PVC.
■
Wire inside. Any low halogen cable meeting the ratings of Telcordia GR-347 is acceptable.
■
Clips. When securing any ground wires, solid or stranded, insulated or un-insulated, never
23 June 2020 TDC-0971-012 Itron, Inc. Page 108 of 134
CCU 100 and Repeater 100 Installation Guide F Grounding Specifications