Attached is a wiring diagram that shows how to connect a Wattnode kWh Transducer to a HOBO ZW-008 or ZW-005 wireless data node to log energy consumption on a 3-phase circuit.

Note: The wiring from the ZW to the Wattnode would be the same for 2-phase (or split-phase) and single-phase circuits.


Installing transducers in an energized electrical enclosure or on any energized conductor can result in severe injury or death. These transducers are for installation by qualified personnel only. To avoid electrical shock, do not perform any installation or servicing of these transducers unless you are qualified to do so. Disconnect and lock-out all power sources during installation and servicing. Please read transducer user manuals for instructions and use.

Helpful links:

ZW-005 Data Node

ZW-008 Data Node

Wattnode kWh Transducer (480VAC in this example)

Training Course - Monitoring Energy with HOBO Data Loggers


Tech Note
Getting Started
Troubleshooting & Maintenance