Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches
WARNING: It is particularly important to provide a properly grounded and shielded environment and to use electrical
Table 25: Site Electrical Wiring Guidelines
Site Wiring Factor | Guidelines |
Signaling limitations | 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 |
| damages unshielded conductors and electronic devices. |
Radio frequency interference | To reduce or eliminate radio frequency interference (RFI) from |
| your site wiring, do the following: |
| ■ Use |
| grounding conductors. |
| ■ If you must exceed the recommended distances, use a |
| |
| 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, seek expert advice. |
| Some of the problems caused by strong sources of |
| electromagnetic interference (EMI) are: |
| ■ Destruction of the signal drivers and receivers in the |
| switch |
| ■ Electrical hazards as a result of power surges conducted |
| over the lines into the equipment |
Related Topics ■ General Safety Guidelines and Warnings for EX Series Switches on page 207
■General Electrical Safety Guidelines and Warnings for EX Series Switches on page 235
■Prevention of Electrostatic Discharge Damage on EX Series Switches on page 236
■Power Supply in EX2200 Switches
■Power Supply in EX3200 and EX4200 Switches on page 26
■AC Power Supply in an EX8200 Switch
■DC Power Supply in an EX8200 Switch
