User's Manual

PMP320HDW2v1 3-49
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DC Cables Chapter 4: Cables
DC Cables
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Motorola recommends the use of flame - retardant, moisture and sunlight - resistant cable rated
to 75° C wet and bendable at - 25° C for the DC cable between the power supply(s) and the
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), catalog
CMM4. Examples of such cable include General Cable ( .generalcable.com
number 234580 for 12 A WG cable and catalog number 236300 for 10 A WG cable, found in
the T elecommunications Catalog.
Recommended wire size for the DC cable of the CMM4 in most systems is shown in T able 4 - 1 .
These wire sizes support up to 8 radios (30 VDC or 56 VDC radios) at up to 100 m (328 ft)
Ethernet cable length from the CMM4.
Table 4-1 Wire size for CMM4 DC cable
DC Power Cord Length W ire Gage
Up to 90 ft (3−25 m) 12 A WG (4 mm
2
)
91−145 ft (26−45 m) 10 A WG (6 mm
2
)
146−230 ft (46−70 m) 8 A WG (10 mm
2
)
F or supporting 8 PMP 54400 AP s or PTP 54200 BHs (which are 12 W 30 VDC radios), reduce
either the maximum DC cable length or the Ethernet cable length by half . F or example, if the
Ethernet cable length from CMM4 to 8 PMP 54400 AP s is 50 m (164 ft) or less, the DC lengths
in T able 4 - 1 can be used. If the Ethernet cable length from CMM4 to 8 PMP 54400 AP s is 100 m
(328 ft), then halve the lengths shown in T able 4 - 1 .
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