Panasonic KXTA308 - ANALOG PBX Installation Manual page 31

2.2.4 Frame Ground Connection
4. If a reading of 0 V at one terminal and a reading of 108 V AC – 132 V AC 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).
5. If a reading of 0 V at one terminal and a reading of 108 V AC – 132 V AC 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 V.
A reading of less than 1
If the reading is not obtained, the outlet is not adequately grounded. See a qualified
electrician.
should be obtained.
Installation 2-7