Echelon DM-21 Device Manager - Manual (Page 25)

Device Manager User’s Guide 3-5
To determine the total power that a power cable must carry, total the VA
requirements for all of the devices that will be drawing power from that cable,
including both modules and other devices.
To determine what gauge cable (in AWG or metric) will be required based on the
total distance of the power cabling, refer to the tables 3.1 and 3.2 for cabling
measured in AWG and in mm. If the wire gauge used is smaller than required,
improper operation of one of more modules will result. All data in these tables
assume an average wire temperature of +55°C.
Table 3.1 - Power Cabling Requirements in AWG
Load (VA)
Feet 10 15 20 25 30 40 55 75 100 130 180 200
35 22 22 22 22 22 22 22 22 22 22 22 22
40 22 22 22 22 22 22 22 22 22 22 22 20
55 22 22 22 22 22 22 22 22 22 22 20 20
65 22 22 22 22 22 22 22 22 22 20 20 18
70 22 22 22 22 22 22 22 22 22 20 18 18
75 22 22 22 22 22 22 22 22 22 20 18 18
90 22 22 22 22 22 22 22 22 20 20 18 18
100 22 22 22 22 22 22 22 22 20 18 18 16
105 22 22 22 22 22 22 22 20 20 18 18 16
115 22 22 22 22 22 22 22 20 20 18 16 16
135 22 22 22 22 22 22 22 20 18 18 16 16
145 22 22 22 22 22 22 20 20 18 18 16 16
150 22 22 22 22 22 22 20 20 18 16 16 16
155 22 22 22 22 22 22 20 20 18 16 16 14
165 22 22 22 22 22 22 20 18 18 16 16 14
185 22 22 22 22 22 22 20 18 18 16 14 14
215 22 22 22 22 22 20 20 18 16 16 14 14
230 22 22 22 22 22 20 18 18 16 16 14 14
235 22 22 22 22 22 20 18 18 16 14 14 14
250 22 22 22 22 22 20 18 18 16 14 14 12
C 22 22 22 22 20 20 18 16 16 14 14 12
295 22 22 22 22 20 20 18 16 16 14 12 12
300 22 22 22 22 20 18 18 16 16 14 12 12