Installation

Prepare the EPO

1. Open the EPO System box by removing the screws on the side. Keep the screws for use after the system is installed. The box will not close securely without the screws in place.

2. Mount the system in a readily-accessible area, on a wall near the principal entrance doors, according to NEC Articles 645.10 and 645.11, IEC/EN 60354-5-537, or equivalent local regulation. There are two different procedures for mounting the system, depending on whether you are running conduits (or cables) along the wall or behind the wall.

Note: If not using conduits, run the cables from the connected devices or the cascaded EPO boxes directly to the EPO using shielding troughs and cable ladders.

Mount the EPO (Running Conduits or Cables Along the Wall)

1.Fasten four 6.35 mm (¼ in) screws through the four mounting holes at each corner of the EPO box and into the wall.

2. Run the conduits (or cables) for the connected devices to the EPO box. If using conduits, it will contain all wiring from the connected devices and all cascading cables. The knockouts in the top and bottom of the EPO box accept 13 mm (½ in) and 19 mm (¾ in) conduits or clusters of cables. Remove the knockouts required for installation.

Note: When planning conduits requirements, consider that two cascading cables will fit in 13 mm (½ in) conduits and four cascading cables will fit in 19 mm (¾ in) conduits. See “Cascade Multiple EPO Boxes“ for more information.

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Emergency Power Off System Installation and Operation

990–1611C-001