25
3
Performing Measurements
3.1 Measuring Leakage Current
DANGER
To prevent electric shock, do not touch any part
beyond the barrier during use (p. 13).
1
2
Clamp the conductor at the center of the jaw.
To measure the ground wire of a circuit, clamp the ground wire only.
(See 1 in the gure)
To measure all the wires of a circuit, clamp them all together in a
bundle. (See 2 in the gure)
Clamp all three of the circuit's
wires in a bundle
1
2
2
lg
Load
equipment
Ig: Leak current
Ground wire
Single-phase 3-wire circuit
3 Performing Measurements