Test Connection Diagram
1.
EG480 Meter
2.
Green Test Lead (E)
3.
Yellow Test Lead (P)
4.
Red Test Lead (C)
5.
Existing Ground Rod
6.
P1 Auxiliary Earth Bar
7.
C1 Auxiliary Earth Bar
Earth Voltage Test
1. Set the Function selector switch to the EARTH VOLTAGE position (AC or DC)
2. Connect the 2 Voltage test leads to the meter.Connect the black and red leads - connect the
black lead to the E (green jack) and connect the Red test lead to the C (Red jack).
3. Connect the test leads to the item under test.
4. Confirm that the voltage measurement is less than 10V AC; otherwise accurate Earth
resistance measurements cannot be made. If voltage is present (higher than 10V AC), the
source of the voltage must be found and corrected before testing can continue.
Earth Ground Resistance test
• Connect the 3 test leads to the meter (1) as follows:
Green lead (2) to the 'E' terminal
Yellow lead (3) to the 'P' terminal
Red lead (4) to the 'C' terminal
• Drive the Auxiliary Earth Bars P1 (6) & C1 (7) into the ground. Align the bars an equal distance
apart to the existing Earth ground rod connection and in a straight line as shown in the diagram
above.
If the auxiliary bars are placed in close proximity to the ground stake,
measurement inaccuracies will result.
(Minimum distance between rods should be no less than 10 feet (3m).
• Connect the alligator clip end of the test leads to the Earth bars and existing ground rod
connection as shown above:
Green lead (2) to the existing ground rod
(5) Yellow lead (3) to Earth Bar P1 (6)
Red lead (4) to the Earth Bar C1 (7)
• Set the meter's function switch to the desired resistance range. (20, 200, 2000Ω).
• Zero the range as described in the Zero adjustment procedure above.
• Press the TEST button. . The “ “ icon will flash and the audible signal will sound.
• Note the displayed reading.
• If high resistance is detected, note the value and take appropriate steps to correct the
ground connection if necessary.
• Press the TEST key to end the test.
• Readings of “1” are typical when the test leads are not connected to the meter.
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