Installation Guide

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Coax Grounding Kit. The coax ground kits must be from the same manufacturer as the
coax. Ground kits must be solid strap type with No. 6 AWG wire and 2-hole compression
crimped lugs (installed using the proper UL tool and circumferential hexagon die). Ground
kits ordered through Itron North Supply do not require approval. Coax ground kits not
ordered through Itron North Supply require approval from the Itron construction team.
Note: Do not use a braid or hose clamp type nor a solid copper strap type with single
hole lugs.
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Lugs. All lugs must be 2-hole, long barrel, tinned solid copper unless otherwise specified in
this document, installed using the proper UL tool and circumferential hexagon die. Lugs must
be Thomas and Betts series 548##BE, Burndy, ERICO or equivalent. Bolt hole diameter
and spacing on all ground lugs must match the hole diameter and spacing of the ground bar.
Angled lugs may be used if construction conditions dictate.
Note: Tag all ground lugs that are attached to any easily accessible ground point (for
example, exposed ground bars, water pipes, or building steel.). The tags must read, "DO
NOT DISCONNECT" and must be placed at each end where the grounding conductor
terminates. Metal tags are acceptable.
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Anti-Oxidation Compound. Anti-oxidation compound must be Thomas and Betts KOPR-
SHIELD (TM of Jet Lube, Inc.) or Burndy Penetrox – E. This product is available in small
containers with a brush attached to the lid for easy application. Apply anti-oxidation
compound between the lug and ground bar only. Do not cover the lug.
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Lightning Arrester for UHF Coax. Polyphaser IS-MR50 series.
Existing Building or Rooftop Sites
The following topic outlines how to ground a CCU on an existing building or rooftop site.
Electrically continuous paths to earth ground are available when grounding on or near existing
buildings.
Grounding Existing Building or Rooftop Sites
1. Inspect all proposed existing building/rooftop sites to determine which of the following
electrically continuous paths to earth ground are available:
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Attachment to the building water main entrance.
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Attachment to the building structural steel that is physically continuous down to earth
ground, as verified by a local Engineering firm.
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Connection to an existing qualified grounding system.
2. Request a copy of any soil resistivity and/or site resistance to earth testing previously
performed on the proposed site.
23 June 2020 TDC-0971-012 Itron, Inc. Page 111 of 134
CCU 100 and Repeater 100 Installation Guide F Grounding Specifications