Common Systems Connection Standards AT&T Services, Inc
Date: August 31, 2007 ATT-TP-76450, Issue 9
Copyright ©2004 – 2006, AT&T Knowledge Ventures
All rights reserved
Page 7
This section describes the various acceptable DC power connectors and connections that are
approved for use within AT&T. See Table 2-1 for a classification of acceptable power
connections based on cable termination.
2.2.1 Location of Power Terminations
2.2.1.1 Rear Power Terminations
It is preferred that power terminations be located on the rear of the panel.
2.2.1.2 Front Power Terminations.
NE designed as “front access only” (no rear access allowed) shall have the power terminations
on the front of the NE.
All power terminations shall be mounted in the top half of the bay. All power connections shall
be clearly labeled and fully protected with a non-metallic, non-flammable cover. All power leads
entering the front or side shall be protected from accidental bumps, pulls and hits.
2.3 CONNECTORS
Connectors used to attach the product to external power cabling shall conform to the following
requirements:
2.3.1 16 AWG Stranded Power Cable and Larger
For applications where the size of wire supplying or distributing power to/from the equipment is
16 AWG stranded power cable or larger, pressure crimped connectors shall be used on the
power cable creating a ring type termination.
2.3.2 Two Hole Connections
Power input terminations that will accept # 8 AWG connector terminations shall use dual
threaded post (stud) termination able to accept the appropriate two-hole crimp connection. The
two post termination may be either 5/8” or ½ “on centers.
Equipment surface terminations shall accept crimp connections that meet the following
specifications:
o UL486A Wire Connectors and Soldering Lugs for Use with Copper
o UL467 Grounding and Bonding Equipment Conductors
o UL 486C Splicing Wire Connectors
o SAE-AS25036 (Insulated Copper Ring Crimped Terminal - Dimensions)
o SAE-AS7928 (Copper Ring Crimped Terminal - Specifications)
Equipment submitted for approval should provide a UL listed (power) termination strip designed
and designated as “field wireable” to insure product compliance with the UL listing of the
