Installation Guide

2. Press the ON/OFF button.
3. Ensure the display indicates OLD Ω.
4. Press the A button.
5. Clamp the jaws around the conductor and measure the ground current.
Warning! If the ground current exceeds 5 amps or noise exceeds 50 Volts, then
ground resistance measurements are not possible. Do not proceed further with
the measurement.
6. Press the "Ω" button and measure the rod/grid resistance to ground.
Note: A 0.7 OHM reading is an error indication. This reading signifies the measurement
of a loop circuit, and is usually caused by the improper placement of the clamp-on ground
resistance tester.
7. If the face of the meter is not visible while the jaws are clamped around the conductor, press
the Hold button, remove the meter, and read/ record the indication.
8. Press the Hold button again to clear the reading.
9. Replace any molding that was removed in earlier steps.
Understanding Party Responsibilities
This section outlines each party’s responsibilities when grounding Itron equipment.
Itron Responsibilities
Itron’s responsibilities include the following:
■
Physical verification of all network device installations, to confirm the Supplier’s quality of the
installation work. The Supplier should expect that representatives from both Itron and the
Customer will be on site at several installations of each type of network device (if not more),
to ensure the installations meet the Itron and Customer quality and design requirements.
■
Physical attendance at all Grounding testing and final punch-walk inspections. Itron will
communicate any Supplier workmanship concerns, to the Supplier, as soon as physically
possible.
■
Validation of the functionality of each Itron TCU 100, CCU 100 and Repeater 100 device,
once the Supplier has completed an installation and the devices are powered up.
Supplier Responsibilities
Supplier’s responsibilities include the following:
CCU100 and Repeater100 Installation Guide F Grounding Specifications
12 February 2021 815-0491-00 Itron, Inc. Page 132 of 133