AT&T Definity Callmaster I Manuál s instrukcemi Strana 125

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POWER AND GROUNDING
Figure 20 shows a typical power and grounding arrangement for a system with the EPN remotely
located. A ground wire must be connected from the cabinet ground block of both the PPN and
EPN to an approved ground. (Also see ‘‘Grounding,’’ later in this section).
6 AWG
GROUND
APPROVED
POWER
CORD
10 FEET
REAR
115-VOLT
60-HZ
TERMINAL
NOTE:
TO APPROVED GROUND LOCATED
NEAREST THE TELEPHONE COMPANY
OWNED PROTECTOR GROUND BLOCK
AT THE BUILDING ENTRANCE FACILITY
POWER
CORD
10 FEET
115-VOLT
60-HZ
COUPLED
BONDING
CONDUCTOR
10 AWG
WIRE TO
COUPLED
BONDING
CONDUCTOR
10 AWG
20 AMP
SERVICE
15 OR
20 AMP
SERVICE
15 OR
MANAGER
I
NEMA 5-15 OR NEMA 5-20
(SEE NOTE) (SEE NOTE)GROUND
(SEE NOTE)
OFF
ON
OFF
ON
SINGLE-POINT
GROUND BLOCK
CIRCUIT
BREAKER
CIRCUIT
BREAKER
POWER
SUPPLY
15-AMP
PLUG
OFF
ON
OFF
ON
POWER
SUPPLY
PROCESSOR PORT NETWORK
CONTROL CABINET A
15-AMP
PLUG
REAR
CONTROL CABINET A
EXPANSION PORT NETWORK
RECEPTACLE, OR EQUIVALENT
6 AWG
GROUND
APPROVED
WIRE TO
GROUND
(SEE NOTE)
FIGURE 20. Typical Single-Carrier AC Power and Grounding Layout (Remotely Located EPN)
121
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