Hardware
Installation
7
2 Hardware Installation
2.1 Precautions
Different versions of the WattNode measure circuits with voltages from 120 VAC single-phase to 600
VAC three-phase. These voltages are lethal! Always adhere to the following checklist:
1)
CCS recommends that a licensed electrician install the WattNode.
2)
The WattNode does not contain any user serviceable parts; return to CCS for service.
3)
Verify that circuit voltages are within the proper range for the WattNode model.
4)
Only use CTs with a 0 – 0.333 VAC output. Never use 5 amp output CTs.
5)
Ensure that the line voltage inputs to the WattNode have either fuses or circuit breakers on each
voltage phase (not needed for the neutral wire).
6)
Never connect the WattNode to a live circuit. Split-core CTs may be placed around live wires.
7)
Always connect the CTs to the WattNode before connecting the line voltages to the WattNode.
Note: in some installations the CT screw terminals will be at line voltage.
8)
Do not place more than one voltage wire in a screw terminal.
9)
Remember that the screw terminals are not insulated. Do not contact metal tools to the screw
terminals if the circuit is live!
10)
Before turning on power to the WattNode, ensure that all the wires are securely installed by gently
tugging on each wire.
11)
Do not install the WattNode in an environment where it may be exposed to temperatures below -
30°C or above 60°C, excessive moisture, dust or other contamination.
2.2 Measurement Configurations
Below is a list of different power measurement configurations, with connections and recommended
WattNode models. Note: Ground wires do not carry current except in the case of a malfunction of the
circuit being measured and are not used by the WattNode.
DANGER — HIGH VOLTAGE HAZARD
Improper installation procedures may result in injury or death.
Summary of Contents for WattNode WNA-1P-240-FT10
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