3-2 Sun Fire V120 and Netra 120 Server User’s Guide • December 2001
3.1 Grounding the Netra 120 ServerThe two M5 groundingstuds on the server ’s back panel are the recommended safety
grounding point (see FIGURE3-1). However, an alternative grounding point is
provided by the middle pin of the WAGOconnector.
FIGURE3-1 The Location of the Grounding Studs for Connecting the Two-HoleLug
●Toground the server, take a ground conductor and terminate it using a right-
angled two-hole lug.
Make sure that it is UL/CSA-approved, that it is suitable for an 8 AWG(6mm2)
conductor,and that it has a 5/8-inch pitch.
Note – For Netra 120 servers that are stacked on top of each other in a rack, you
need to use a right-angled two-hole lug. Use a UL/CSA-approved component, such
as the one supplied by Thomas & Betts (part number: 54204-UB).
●Tosecure the lug onto the ground conductor cable, use a UL/CSA-approved
crimping tool, such as the one supplied by Thomas & Betts (part number: TBM 5-
S).
Do not use a torque value of more than 3.5 Nm maximum.
Connect the free end of the ground conductor cable to an earthing bar located near
to the equipment.
Caution – External filtering and/or surge suppression devices may be requiredon
the power feeds where branch circuit electromagnetic characteristics areunknown.
Note – For moreinformation about grounding the server, refer to the Sun Fire V120,
Netra 120, and Netra T1 Servers: Safety and Compliance Guide (part number: 816-3211).
M5 grounding
studs