Power Wiring And Fusing; Frame Ground - ADTRAN OPTI-6100 Installation Manual

OPTI-6100 Installation and Turn-Up Practice

Power Wiring and Fusing

Wiring and fusing should conform to the following:
–48 VDC input and return connections should be provided from the fuse panel using
♦
insulated 14 to 18 AWG wire (16 AWG recommended) for 10 amp fuses.
±24 VDC input and return connections should be provided from the fuse panel using
♦
insulated 14 AWG to 18 AWG wire (16 AWG recommended) for 15 amp fuses.
CAUTION
!
Applications requiring the OMM48 (P/N 1184548L1) cannot be
supplied with ±24 VDC power. The OMM48 only supports –48 VDC.
Separate wires should be run from the fuse panel for each input and return.
♦
Power wire with red insulation is recommended for the input feeds.
♦
Power wire with black insulation is recommended for the return feeds.
♦
If a chassis is to be equipped with a fan assembly, then separate –48 VDC or ±24 VDC
♦
power wiring is required for the fan unit.
A fan assembly should be dual-feed powered from different sources than the chassis, using
♦
16 AWG wire from the fuse panel. Follow the same color scheme used to wire the chassis.
The fan assembly should be furnished with a separate 1.0 amp fuse for –48 VDC or a
♦
2 amp fuse for ±24 VDC on each power feed.

Frame Ground

Each MX chassis requires a frame ground connection using 14–16 AWG wire (14 recom-
mended) or in accordance with standard company requirements. Run separate ground wires
from the rack or grounding bar for each chassis. Wire with green insulation is recommended,
to distinguish the frame ground from other power connections. Up to 6 AWG wire can be
accommodated with the appropriate lug. Lugs must be tightened to a torque of 2 foot-pounds
(24 inch-pounds).
Each fan assembly also requires a connection to frame ground. 16 AWG or 18 AWG ground wire
following the same color scheme as the chassis should be used. The fan assemblies should be
connected to frame ground using the same method as the chassis.
14 61184500L1-5L