Routing Power Cables From Overhead To The Bip - Nortel Passport 15000 Hardware Installation And Maintenance

832 Chapter 17 Hardware procedures

Routing power cables from overhead to the BIP

Prerequisites
Procedure steps
241-1501-240 5.2S2
Route power input cables in sequence from overhead to the BIP in a NEBS
2000 frame to establish a significant portion of the power cable path.
CAUTION
Risk of damage to power connections by weight
Use tie-wraps every 10 cm (4 in.) to fasten the cables to
the 7-mm (0.25-in.) thick strain-relief bracket (part
number P0891284 or P0911981) at the rear of the BIP. Use
tie-wraps every 15 cm (6 in.) to fasten the cables to the
cable ladder from an overhead cable trough or down the
side of the NEBS 2000 frame or equivalent. Fastening the
power cables provides strain relief from the weight of the
cables on the power input lugs at the rear of the BIP.
• You must be familiar with "Safety considerations and best practices"
(page 53).
• When using conduit for the power cables, you need kit NTHR78, which
contains a conduit junction box with two 16-mm (5/8-in.) hex-head
screws.
• You need the following specialty tools a cutter for up to No. 1/0 AWG
2
(53.5 mm ) cable.
• When the source of power is from tapping off a main cable, the minimum
gauge of the cable to the BIP must be very flexible 1/0 AWG (53.5 mm
unless a power-and-ground cable assembly is used.
1 If you are using conduit, fasten the conduit junction box to the top rear of
the NEBS 2000 frame using the 2 provided screws and threaded screw
holes. Tighten the screws to snug plus a 1/2 turn.
2 Stop the conduit just past the lip of the holes in the conduit junction box,
leaving enough room for 4 or 8 cables to bend smoothly onto the strain-
relief bar at the rear of the BIP.
3 If you are not using conduit, position a cable ladder at the right of the
frame while facing the rear of the BIP. The position and capacity of the
2
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