Hach Accu4 User Manual page 11

Figure 6 General wiring procedure
Wiring for power
D A N G E R
Electrocution hazard. Protective Earth Ground (PE) connection is
required.
D A N G E R
Electrical shock and fire hazards. Make sure to identify the local
disconnect clearly for the conduit installation.
W A R N I N G
Potential Electrocution Hazard. If this equipment is used outdoors or in
potentially wet locations, a Ground Fault Interrupt device must be
used for connecting the equipment to its mains power source.
N O T I C E
Install the device in a location and position that gives easy access to the
disconnect device and its operation.
Supply power to the controller with conduit or a power cable. Make sure
that a circuit breaker with sufficient current capacity is installed in the
power line. The circuit breaker size is based on the wire gauge used for
installation.
For installation with conduit:
• Install a local disconnect for the controller within 3 m (10 ft) of the
controller. Put a label on the disconnect that identifies it as the main
disconnect device for the controller.
• Make sure that the power and safety ground service drops for the
controller are 18–12 AWG.
• Connect equipment in accordance with local, state or national
electrical codes.
• Connect the conduit through a conduit hub that holds the conduit
securely and seals the enclosure when tightened.
For installation with a power cable, make sure that the power cable is:
• Less than 3 m (10 ft) in length
English 11