Tadiran Telecom Coral IPx 800 Series, Installation Procedure And Hardware Reference Manual, Page: 47 / 400

Hardware Installation Procedure
2-7
Site Inspection
2
DC Electrical Requirements
DC powered units must comply with the following instructions:
1. Restricted Access Area : The DC powered equipment should only be installed in a
Restricted Access Area.
2. Installation Codes : The equipment must be installed according to country
national electrical codes. For North America, equipment must be installed in
accordance with the US National Electrical Code, Articles 110-16, 110-17 and
110-18 and the Canadian Electrical Code, Section 12.
3. Overcurrent Protection : A readily accessible listed branch circuit overcurrent
protective device rated 30A/60VDC minimum slow blow must be incorporated in the
building wiring for every four cages.
4. CAUTION : This equipment is designed to permit connection between the earthed
conductor of the DC supply circuit and the earthing conductor at the equipment.
See installation instructions below.
5. The equipment shall be connected to a properly earthed supply system.
6. All equipment in the immediate vicinity shall be earthed the same way, and shall
not be earthed elsewhere.
7. The DC supply system is to be local, i.e. within the same premises as the
equipment.
8. A disconnect device is not allowed in the earthed circuit between the DC supply
source and the frame/ earthed circuit connection.