Connecting Power; Grounding The Model Sn4900-Ac And Dc Units; Iec-320 Connector And Grounding Stud Locations - Patton SmartNode 4900 User Manual

SmartNode 4900 User Manual
V.35 Interface (DB-25)
24 XTC-a (to DCE)
Note

Connecting power

In connecting to the power source, it is important to establish a good grounding connection first, then the
power connection. This section explains:
• Making the ground connection for either AC or DC units (see section
AC and DC units")
• Connecting to an AC power source (see
• Connecting to a DC power source (see
Grounding the Model SN4900—AC and DC units
Do the following:
1. Assemble a ground wire using #10 AWG wire with green-colored insulation and two ring terminals. Make
the wire long enough to reach one of the following earth ground sources:
– The building ground rod (generally located at the site's main service entrance)
– A sprinkler system pipe
– A cold-water pipe
– Building structural steel
2. Install the grounding wire between the grounding stud (see
Installing the IpChannel Bank
Table 8. Serial port pin-outs
Some NTUs have non-standard connections and require special
cables. Consult the NTU maker's product documentation
"Installing the power cables—AC units"
"Installing the power cables—DC units"
Power cable
retainer clip
Figure 11. IEC-320 connector and grounding stud locations
X.21 interface (DB-15)
"Grounding the Model SN4900—
IEC-320 connector
(2 places)
Grounding stud
figure 11) and the grounding source.
3 • Hardware installation
on page 33)
on page 34)
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