Before You Install MWS1000
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• For DC-power-equipped appliances, you must provide an external certified, dedicated circuit breaker rated
at a minimum of 20 A for each DC power supply.
• For DC-power-equipped appliances, you must supply four DC power cables that meet your local code
requirements.
• You must provide a good earth ground for the rack.
• On DC-power-equipped models, you must supply a ground cable for the power supply. We recommend
using a ground cable identified according to local standards to ground the appliance.
• You must use only copper grounding conductors.
• For a ground wire attaching directly to the rack, we recommend using the following ground lug: Panduit P/N
LCDX8-10A-L, #8 AWG, #10 stud, 0.625-inch spacing.
• To ensure a reliable low-resistance ground bond, you must provide and use star washers and thread-
forming screws with paint-piercing washers to secure the ground wire to the rack frame, and to secure the
appliance chassis to the rack.
• If you connect the ground wire to a ground rail in the rack or to any other grounding facility provided by the
site, you must use the appropriate fasteners to ensure a reliable ground bond. When the ground wire is
attached with bolts or to studs, locking washers can help ensure the ground wire does not come loose.
