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M10i DC Power Cable and Lug Specifications


You must provide two 14-AWG (2.08 mm2) single-strand-count wire cables for each power supply.


Before router installation begins, a licensed electrician must attach a cable lug to the DC power cables that you supply. The terminal fork lugs, 14-AWG (2.08 mm2), are provided in the accessories box for the DC power cables.


For field-wiring connections, use copper conductors only.

Figure 1 shows how to attach the power cables. The DC power cables insert into the field-wiring terminals located on each power supply—the input terminal is labeled -48V and the return terminal is labeled RTN.

Figure 1: DC Power Cable Connections
DC Power Cable Connections

DC power cables must not block access to router components or drape where people could trip on them.

The DC power supplies in slots P/S 0 and P/S 1 must be powered by dedicated power feeds derived from feed A, and the DC power supplies in slots P/S 2 and P/S 3 must be powered by dedicated power feeds derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system. Most sites distribute DC power through a main conduit that leads to frame-mounted DC power distribution panels, one of which might be located at the top of the rack that houses the router. A pair of cables (one input and one return) connects the field-wiring terminals to the power distribution panel.