Certification and Standard Compliance
‑187‑
Main circuit wiring requirements
Field installation is not allowed for output terminals BR, (‑), and (+).
● Terminals BR, (‑), and (+) are used to connect optional parts. Do not connect these
terminals to an AC power supply.
● To protect the main circuit, separate and cover the surface that may come into
contact with the main circuit.
● The control circuit is the internal safety extra‑low voltage (SELV) circuit, which
must be insulated and isolated from other circuits. Make sure that the control
circuit is connected to the external SELV circuit.
● Prevent foreign matters from entering the wiring part of the terminal block.
● Do not solder the twisted conductors.
● The tightening torque may vary with terminals. Tighten terminal screws with the
specified tightening torque. You can use the torque screwdriver, ratchet, or
wrench.
● When using an electric screwdriver to tighten terminal screws, set a low speed to
prevent damage to the terminal screws.
● Tighten the terminal screws at an angle within 5 degrees. Failure to comply may
result in screw damage.
Control circuit wiring requirements
Observe the requirements in UL508 during wiring.
Main circuit cable selection
For the selection of cable dimensions, follow the requirements of US National
Electrical Code (NEC) and Part 1 of Canadian Electrical Code (CEC) and relevant local
regulations.
● Use cables with copper conductors.
● The recommended cables for the main circuit are 600 V Class 2 heat‑resistant
indoor PVC cables that can work under temperature of 75°C continuously. The
following conditions are used as premises:
1. Ambient temperature: < 40°C
2. Normal operating ratings
If the recommended cables for peripheral equipment or options are not suitable for
the product, contact Inovance.
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