12
Typical Measurements
(cont’d)
Notes:
• Clamp the jaw around all current-
carrying conductors or the ground
wire.
• Close the jaw completely.
• Center the wire or wire bundle in
the jaw for highest accuracy.
• Any reading other than zero
indicates that current is leaking
to ground.
Checking for Leakage Current at
Checking for Leakage Current to Ground
Current-Carrying Conductors
on Any Type of Wiring System
on Any Type of Wiring System
ZE
R
O
M
A
X
/M
IN
H
O
LD
V
40mA
COM
V
Ω
400mA
4A
40A
60A
OFF
Ω
LOAD
1
∅
2W
Z
E
R
O
M
A
X
/M
IN
H
O
L
D
V
40mA
COM
V
Ω
400mA
4A
40A
60A
OFF
Ω
LOAD
3
∅
3W
Z
E
R
O
M
A
X
/M
IN
H
O
L
D
V
40mA
COM
V
Ω
400mA
4A
40A
60A
OFF
Ω
LOAD
3
∅
4W
ZERO
MAX/MIN
HOLD
V
40m
A
C
O
M
V
Ω
400m
A
4A
40A
60A
OFF
Ω
LOAD