AOC 15 user manual Control Box Connections, Control box at Kotzebue Electric Association

7.0 Electrical Installation 59

7.3Control Box Connections

Wires should be run in a conduit to the control box based on convenience, safety and applicable standards. Non-NEMA 4 electronic enclosures must be housed in a weatherproof service structure. However, it is recommended that all enclosures be housed in a weatherproof structure to facilitate maintenance in all weather conditions. Wires from the control box to the tower base should run in a conduit. Rigid metal conduit should be buried to a minimum depth of 92 cm (36 inches) and approved non-metallic direct burial conduit, to a minimum depth of 46 cm (18 inches) or 61 cm (24 inches) for roadways. Refer to the National Electrical Code, International Electrotechnical Commission standards and local inspectors for site specific requirements.

All wires between the control box, the dynamic brake capacitor box and the dynamic brake resistor box must be properly contained in conduits and be terminated correctly in the control box. When terminating wires in screw lugs, torque, release torque and retorque the lug screw to ensure the wire will not pull out of the lug connection. See Appendix M for wire connections.

Photo Courtesy of

KEA

Figure 7-5 Control box at Kotzebue Electric Association

NOTICE: Use of the material contained in this document is subject to the warning on page Iv and the disclaimer on page v of this document.

DOC012R02 AOC 15/50 User Manual Nov 2001