Site Electrical Wiring Guidelines for the JCS 1200 Platform
- Distance limitations for signaling—Improperly installed wires can emit radio interference. In addition, the potential for damage from lightning strikes increases if wires exceed recommended distances or if wires pass between buildings. The electromagnetic pulse (EMP) caused by lightning can damage unshielded conductors and destroy electronic devices. If your site has previously experienced such problems, you might want to consult experts in electrical surge suppression and shielding.
- Radio frequency interference—You can reduce or eliminate the emission of radio frequency interference (RFI) from your site wiring by using twisted-pair cable with a good distribution of grounding conductors. If you must exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable.
- Electromagnetic compatibility—If your site is susceptible
to problems with electromagnetic compatibility (EMC), particularly
from lightning or radio transmitters, you might want to seek expert
advice. Strong sources of electromagnetic interference (EMI) can destroy
the signal drivers and receivers in the routing platform and conduct
power surges over the lines into the equipment, resulting in an electrical
hazard. It is particularly important to provide a properly grounded
and shielded environment and to use electrical surge-suppression devices.
Caution: To comply with intrabuilding lightning and surge requirements, intrabuilding wiring must be shielded, and the shield for the wiring must be grounded at both ends.