Enterasys S8-Chassis-POE4 - Chassis Bonding and Grounding; Telcordia GR-1089 Grounding Hole Pattern

Installing the S8 Chassis
Enterasys S-Series S8 Chassis Hardware Installation Guide 3-13
Chassis Bonding and Grounding
Installingthechassisasdescribedinthischaptermeetstheprotectiveearthgrounding
requirementsoftheNationalElectricalCode(NEC)UL60950andIEC60950standards.However,
insomecasesitisnecessarytouseanalternativegroundingmethodatinstallationsitesthatmust
meettheTelcordiaGR‐1089Section9,
BondingandGroundingRequirements,ornational
deviations.Tomeettheserequirements,usethefourtappedholeslocatedontherearofthe
chassis.Theseholesmeettheholegroundingboltpatternrequirements,asshowninFigure 3‐10.
Figure 3-10 Telcordia GR-1089 Grounding Hole Pattern
Alternategroundingrequirementswhenaconnectionisneededbetweenthechassisandthe
enclosuremetalwork,anearbypointontheCentralOffice(CO)Groundsystem,orearthground.
Theconnectionismadeusingoneormoregroundingwires(asneeded)fabricatedfroman8AWG
(6
2
mm)strandedcopperwire.Tofabricateandinstallagroundingwire,proceedasfollows:
1. Cutan8AWG(6
2
mm)stranded‐copperwiretolength,longenoughtoreachfromthe
groundinglocationofthechassistotheselectedgroundinglocationontheCOGround,earth
ground,orenclosuremetalwork.
2. Installalistedtwo‐holecompression‐typeconnectoronbothendsofthegroundingwire.
3. Applyasuitableantioxidanttothe
chassisgroundinglocationandunpainted surface
groundinglocationontheCOGroundorenclosuremetalwork.
4. Connectonegroundcabletwo‐holeconnectortothechassisusingtwoofthe1/4‐20screws
shippedwiththechassis.Connectthetwo‐holeconnectorattheotherendofthecabletothe
CO
Groundorenclosuremetalworkusinguser‐suppliedscrews.
1 Ground screws