Panasonic EASA-PHONE KX-T123210 Installation Manual page 24

IMPORTANT!!!
Surely connect the frame of the KX-Tl23210 to earth
ground properly to protect the unit.
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To earth ground
In most continental united states, the ground provided by the " third wire ground" at the commercial power outlet
will be satisfactory however, in a small percentage this ground may be installed in correctly.
Therefore, the following test procedure should be performed.
Test Procedure
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Obtain a suitable voltmeter and set it for a possible reading of up to 250 VAC
Connect the meter probes between the two main AC voltage points on the wall outlet. The reading obtained
should be 108-132 VAC.
Move one of the meter probes to the 3rd prong terminal (GND).
Either the same reading or a reading of 0 volt should be obtained.
If a reading of 0 volt at one terminal
and a reading of 108-l 32 VAC at the other terminal is not obtained, the
outlet is not properly grounded.
This condition should be corrected by a qualified electrician (per article 250 of the National Electrical Code).
If a reading of 0 volt at one terminal and a reading of 108-l 32 VAC at the other terminal is obtained, then set
the meter to the " OHMS/RX1 " scale, place one probe at the GND Terminal and the other probe at the terminal
which gave a reading of 0 volt.
A reading of less than 1 ohm should be obtained.
If the reading is not obtained the outlet is not adequately grounded, see qualified electrician.
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