Setting Up the Matrix X16-C Chassis
3-12 Matrix X16-C Chassis Setup
Tomeettheserequirements,usethefourtappedholeslocatedontherear‐centersideofthe
chassis.Theseholesmeettheholegroundingboltpatternrequirements,asshowninFigure3‐9.
Figure 3-9 Telcordia GR-1089 Grounding Hole Pattern and Cable
TogroundthechassisaccordingtotheTelc ordi aGR‐1089Section9,BondingandGrounding
Requirements,aconnectionisneededbetweenthechassisandtheenclosuremetalworkora
nearbypointontheCentralOffice(CO)Groundsystem.Theconnectionismadeusingoneor
moregroundingwires(asneeded)fabricatedfroma12AWGstrandedcopperwire.Tofabricate
andinstallagroundingwire,proceedasfollows:
1. Cuta12AWGstranded‐copperwiretolength,longenoughtoreachfromthegrounding
locationofthe��chassistotheselectedgroundinglocationontheCOGroundorenclosure
metalwork.
2. Installalistedtwo‐holecompression‐typeconnectoronbothendsofthegroundingwire.
3. Applyasuitableantioxidanttothechassisgroundinglocationandunpaintedsurface
groundinglocationontheCOGroundorenclosuremetalwork.
4. Connectonegroundcabletwo‐holeconnectortothechassisusingtwoofthe1/4‐20screws
shippedwiththechassis.Connectthetwo‐holeconnectorattheotherendofthecabletothe
COGroundorenclosuremetalworkusinguser‐suppliedscrews.
5. Torquescrewsto67in‐lbs(±5%).
112 AWG stranded copper wire 3Chassis 5 1/4-20 ground screws (4)
2Rear of chassis, bolt pattern grounding site 4Two-hole connectors
Notes: The hole pattern in the chassis allows you to use two differently-sized two-hole connectors.
The size is determined by the orientation of the connector. The vertical and the horizontal
orientations allow for two standard double-hole compression ground lug configurations.
IIn Norway, Sweden, and Finland, the same procedure can be used for a permanent protective
earth ground connection as required by their national deviation to IEC 60950, Section 5.1.7.
IIn Denmark, the chassis must be installed utilizing a Type B grounded plug.
14 43
2
2
5