Seaward 350 PrimeTest - Manual (Page 59)

PrimeTest 350 Operating Instructions
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11.6 Earth Loop Resistance
Refer to Fig 7
This test is applicable to the mains electrical
installation.
This test will check the resistance of the Live to Earth
circuit of the installation.
Warning: The black probe must not be used
when performing an Earth Loop Resistance
test.
The test duration for this test is fixed at approximately
10 seconds.
Fit the power lead supplied to the PrimeTest 350 and
plug the other end into the mains outlet under test. To
start the test, press the green START button.
While the PrimeTest 350 performs the test the LCD will
show 0.0
Ÿ flashing. When the test is complete
measured value will be displayed.
11.7 RCD Trip Time
Refer to Fig 7
This test is applicable to the mains electrical
installation.
This test will pass a sinusoidal current of 30mA down
the earth conductor and measure the time it takes for
the mains supply to trip.
Warning: The black probe must not be used
when performing an RCD test.