TYPICAL WIRING DIAGRAMS, CONT.

L1

L2

220 V

LOAD

B

A

220 Vac (50/60 Hz)

TB1

Epoxy encapsulation

Polarity dot on bottom

Figure 2. Wiring diagram for 220/240V systems with no neutral

Figure 3. Wiring diagram for 220/240V systems with neutral (monitoring L1)

L1 Neutral L2

220 V

LOAD

B

A

220 Vac (50/60 Hz)

TB1

Epoxy encapsulation

Polarity dot on bottom

Figure 4. Wiring diagram for 220/240V systems with neutral (monitoring L2)

L1 Neutral L2

220 V

LOAD

B

A

220 Vac (50/60 Hz)

TB1

Epoxy encapsulation

Polarity dot on bottom

Note: If the ACM20 displays zero Watts with

power applied to the load, reverse the direction

of the wire passing through the CT's center hole.

See Technical Note 6 for more information.

Note: If the ACM20 displays zero Watts with

power applied to the load, reverse the direction

of the wire passing through the CT's center hole.

See Technical Note 6 for more information.

Note: If the ACM20 displays zero Watts with

power applied to the load, reverse the direction

of the wire passing through the CT's center hole.

See Technical Note 6 for more information.

ACM20 Series

Four-Function AC Power Meters

www.murata-ps.com/dpm

email: sales@murata-ps.com

30 Apr 2010

MPM_ACM20 Series.A06 Page 4 of 6