Site Electrical Wiring Guidelines
Table 1 describes the factors you must consider while planning the electrical wiring at your site.
It is particularly important to provide a properly grounded and shielded environment and to use electrical surge-suppression devices.
Table 1: Site Electrical Wiring Guidelines
Site Wiring Factor
To ensure that signaling functions optimally:
Radio frequency interference (RFI)
To reduce or eliminate the emission of RFI from your site wiring:
Electromagnetic compatibility (EMC)
Provide a properly grounded and shielded environment and use electrical surge-suppression devices.
Strong sources of electromagnetic interference (EMI) can cause the following damage:
Tip: If your site is susceptible to problems with EMC, particularly from lightning or radio transmitters, you might want to seek expert advice.
Some ports are designed for use as intrabuilding interfaces only Type 2 or Type 4 ports, the battery return connection is to be treated as an Isolated DC return (that is, DC-I), as defined in GR-1089-CORE and require isolation from the exposed OSP cabling. To comply with NEBS requirements and protect against lightning surges and commercial power disturbances, the intrabuilding port(s) of the device MUST NOT be metallically connected to interfaces that connect to the OSP or its wiring. The intrabuilding port(s) of the device is suitable for connection to intrabuilding or unexposed wiring or cabling only. The addition of primary protectors is not sufficient protection to connect these interfaces metallically to OSP wiring.