JCS1200 DC Power Electrical Safety Guidelines
The following guidelines are provided
for connecting a 60 A JCS1200 platform to a –48 V DC power
source:
- The power source must have a minimum of 80 A overcurrent
protection. See article 240, paragraph 3, table 310-16 of the National
Electric Code for more information about electrical wiring requirements.
- The overcurrent protective device or circuit breaker must
be accessible to service personnel to prevent the power from being
turned on by someone other than a technician servicing the JCS1200 platform.
- The JCS1200 platform requires a DC wire rating of 4
AWG (circular mil area of 33100-52600) and of 90° C.
 | Note:
The actual wire gauge and ring terminal are determined
by the current draw and the length of wire run or as specified by
the customer premises guidelines. |
- Flexible DC wiring is recommended to allow for minimum
bend radius.
- The supply wiring to the power connectors must be terminated
in UL-recognized insulated ring terminals, sized for an M6 stud, 4
AWG wire (circular mil area of 33100-52600), and a wire insulation
diameter of 12.8 to 13.1 mm. An example of this type of ring terminal
is Amp Plasti-Grip type 520431 using Tyco Electronics Hydraulic Crimping
Tool part number 14907491.
- For NEBS compliance, the grounding cable must use copper
conductors with a size minimum of 6 AWG (circular mil area of 2080033100)
and must be terminated in a UL-recognized two-hole lug sized for an
M6 stud. An example of this type of two-hole lug is the Thomas and
Betts part number 54205 using the Thomas and Betts crimping tool model
TBM-25S.
- Torque the wiring-terminal nuts to 13.3 lb-in. (1.5 Nm)
Published: 2011-12-15