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Use the following instructions when you are connecting the ACM100 to a single-phase circuit
connected via two hot wires. You will need to install two current transducer and two user-supplied
voltage sense cables. The ACM100 comes with a single current transducer so you will need to
purchase an additional current transducer (please refer to Section 1.3) for monitoring this type
of system.
Step 1: De-energize the AC Source.
Step 2: The Current Transducer has black and white wires. Install the Phase A Current
Transducer as follows:
a. Connect the black wire to pin 7 (I
b. Connect the white wire to pin 8 (I
c. Disconnect the Phase A hot wire from the AC power source and place it through the
hole in the Current Transducer such that the arrow on the Current Transducer points
towards the AC power source. Then, reattach the hot wire to the AC power source.
Step 3: Repeat step 2 for the Phase B Current Transducer as follows:
a. Connect the black wire to pin 9 (I
b. Connect the white wire to pin 10 (I
c. Disconnect the Phase B hot wire from the AC power source and place it through the
hole in the Current Transducer such that the arrow on the Current Transducer points
towards the AC power source. Then, reattach the hot wire to the AC power source.
Step 4: You must supply cables for connecting the voltage sense pins on the ACM100 to the
AC source. For the purposes of these instructions, we will assume that each cable has one black
conductor and one white conductor. Install the first voltage sense cable as follows:
a. Connect the white wire from one end of the first Voltage Sense cable to pin 4 (V
on the ACM100.
b. Connect the white wire from the other end of the first Voltage Sense cable to the
neutral wire of the AC source being monitored
c. Connect the black wire from one end of the first Voltage Sense cable to pin 1 (V
on the ACM100
d. Connect the black wire from the other end of the first Voltage Sense cable to a fuse
appropriately sized for the black wire (18 gauge wire minimum and 3 amp fuse or
less).
e. Connect the other end of the fuse to the AC source hot wire (the fuse should be placed
within 6 inches of the connection to the hot wire).
Step 5: Install the second Voltage Sense cable as follows:
a. Connect the white wire from one end of the second Voltage Sense cable to pin 5
(V
) on the ACM100.
BNeutral
b. Connect the white wire from the other end of the second Voltage Sense cable to the
neutral wire of the AC source being monitored.
c. Connect the black wire from one end of the second Voltage Sense cable to pin 2
(V
) on the ACM100
BLine
Revision 1.3
) on the ACM100
A+
) on the ACM100
A-
) on the ACM100
B+
) on the ACM100
B-
)
ANeutral
)
ALine
Page 7
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