Site Electrical Wiring Guidelines; Environmental Requirements And Specifications For Junos Space Appliances - Juniper JA2500 Junos Space Hardware Manual

JA2500 Junos Space Appliance Hardware Guide

Site Electrical Wiring Guidelines

Table 13: Site Electrical Wiring Guidelines
Site Wiring Factor
Signaling limitations
Radio frequency
interference
Electromagnetic
compatibility
Related
Documentation

Environmental Requirements and Specifications for Junos Space Appliances

24
This topic applies to the following Junos Space Appliances: JA1500 and JA2500.
Table 13 on page 24 describes the factors you must consider while planning the electrical
wiring at your site.
WARNING: It is particularly important to provide a properly grounded and
shielded environment and to use electrical surge-suppression devices.
Guidelines
If your site experiences any of the following problems, consult experts in electrical surge suppression
and shielding:
Improperly installed wires cause radio frequency interference (RFI).
Damage from lightning strikes occurs when wires exceed recommended distances or pass
between buildings.
Electromagnetic pulses (EMPs) caused by lightning damage unshielded conductors and
electronic devices.
To reduce or eliminate radio frequency interference (RFI) from your site wiring, do the following:
Use a 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.
If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from
lightning or radio transmitters, seek expert advice.
Some of the problems caused by strong sources of electromagnetic interference (EMI) are as
follows:
Destruction of the signal drivers and receivers in the appliance.
Electrical hazards due to power surges conducted over the lines into the equipment.
Environmental Requirements and Specifications for Junos Space Appliances on page 24
General Electrical Safety Guidelines and Warnings on page 175
General Safety Guidelines and Warnings on page 151
General Site Guidelines for Junos Space Appliances on page 23
This topic applies to the following Junos Space Appliances: JA1500 and JA2500.
Copyright © 2018, Juniper Networks, Inc.