Hazardous voltage or energy may be present on power terminals. Always replace cover when terminals are
not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement 1086
Warning
The grounding architecture of this product is DC-isolated (DC-I).
Note
Equipment That You Need
• Ratcheting torque screwdriver with a number-2 Phillips head that exerts up to 15 pound-force inches
(lbf-in.) of pressure.
• Panduit crimping tool with optional controlled-cycle mechanism (model CT-720, CT-920, CT-920CH,
CT-930, or CT-940CH).
• Wire-stripping tools.
• 12-gauge copper ground wire (insulated or not) for the single-hole ground connection.
• 8-gauge copper ground wire (insulated or not) for the dual-hole ground connection.
• Dual-hole ground lug and two screws (included in the DC power supply accessory kit) and single-hole
ground lug and screw (included in the switch accessory kit). The dual-hole lug is required for the grounding
of the switch in a NEBS installation where the DC supply is the only NEBS compliant power supply
option.
• Four leads of 14-gauge copper wire.
• Four fork-type terminals from the DC power supply accessory kit. The terminals must be the proper size
for M3 screws in a Dinkle DT-35-B25-style terminal block.
Grounding the Switch
Follow these steps to install either a single-hole ground lug or a dual-hole ground lug on the switch. Make
sure to follow any grounding requirements at your site.
Before you begin
Follow the grounding procedures at your site and observe these warnings:
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence
of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician
if you are uncertain that suitable grounding is available. Statement 1024
Warning
When installing or replacing the unit, the ground connection must always be made first and disconnected last.
Statement 1046
Warning
Catalyst 3850 Switch Hardware Installation Guide
OL-26779-0576
Power Supply Installation
Equipment That You Need
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