Site Electrical Wiring Guidelines - Juniper ACX1000 Hardware Manual

Site Electrical Wiring Guidelines

Table 18 on page 69 describes the factors you must consider while planning the electrical wiring at
your site.
WARNING: You must provide a properly grounded and shielded environment and use
electrical surge-suppression devices.
Avertissement Vous devez établir un environnement protégé et convenablement mis à
la terre et utiliser des dispositifs de parasurtension.
Table 18: Site Electrical Wiring Guidelines
Site Wiring Guidelines
Factor
Signaling If your site experiences any of the following problems, consult experts in electrical surge
limitations 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.
Radio To reduce or eliminate RFI from your site wiring, do the following:
frequency
•
Use a twisted-pair cable with a good distribution of grounding conductors.
interference
•
If you must exceed the recommended distances, use a high-quality twisted-pair cable with
one ground conductor for each data signal, when applicable.
Electromagnet If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly
ic from lightning or radio transmitters, seek expert advice.
compatibility
Strong sources of electromagnetic interference (EMI) can cause:
•
Destruction of the signal drivers and receivers in the device,
•
Electrical hazards as a result of power surges conducted over the lines into the equipment.
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