Chapter 1
Tropos 7320 Router Installation Guide
23
Connecting AC Power
This section explains the different categories of electrical power and provides procedures for
connecting the outdoor system to power. There are two options for connecting the router to a
power source:
AC power source (3-wire service) — 3W(P+N+PE) or 3W(2P+PE); 100-480 VAC, 50/60
Hz
NEMA plug, for streetlight photoelectric control power tap (2-wire service) —2W(2P) or
2W(P+N); 100-480 VAC 50/60 Hz
Warning
Before you work on an electrical circuit, make sure the power is off. Turn off the breaker to the circuit
you plan to work on. Post a sign on the service panel so nobody tries to reconnect power while you are
working on the circuits. Double-check the circuit with a circuit tester before you touch it to make sure
the correct breaker has been disconnected.
Caution
You must install an external grounding wire if the router is installed on a non-metal pole or if the
metal installation structure is not properly grounded. You must also ground the outdoor data
protection device to a bonded pipe or ground rod. Make sure that grounding is complete before
you connect power to the router.
Note
Tropos power cords are intended for use only on Tropos routers.
Categories of Power
The IEEE/ANSI C62.41 standards (equivalent to the IEC Category IV standards) define
Categories A-C. Equipment designed to a CAT C standard is resistant to much higher energy
transients than one designed to CAT B or CAT A standards. Within a category, a higher voltage
rating denotes a higher transient withstand rating.
lists power types and
shows hook-ups for the IEEE/ANSI C62.41 Power
Categories power categories.
TABLE 4
IEEE/ANSI C62.41 Power Categories
Category
Summary
Examples
CAT C
Outside and service
entrance
• Service drop from pole to building entrance
• Run between meter and distribution panel
• Overhead line to detached buildings
• Underground lines to well pumps
