Power Wire - Run Length - Leviton EZ-MAX User Manual

Control Device Loads

Power Wire - Run Length

The maximum total run length of each segment is a function of the total number of
unit loads. A run becomes too long when the voltage drop, due to wire size and run
length, increases to a point where the station does not have sufficient voltage to
operate. The maximum run length, in feet, based on the total number of unit loads is
shown below:
10 Unit Loads
20 Unit Loads
30 Unit Loads
40 Unit Loads
50 Unit Loads
60 Unit Loads
70 Unit Loads
80 Unit Loads
90 Unit Loads
100 Unit Loads
110 Unit Loads
120 Unit Loads
Z-Max Advanced Programming & Systems Design Guide
Revision A:11/2005
(2) Tables are provided, (1) @ 12VDC and (1) at 24VDC. Make sure
that you use the correct table!
14 AWG (Feet) 12 AWG (Feet)
1905
950
630
475
380
315
270
235
210
190
170
155
Wire Size vs. Length of Runs - Power Wiring @12 VDC
Power Considerations for Control Systems
10 AWG (Feet)
3000 4800
1500 2400
1000 1600
750 1200
600 960
500 800
425 685
375 600
330 530
300 480
270 435
250 400
rac00-sdg
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