VERIDT INC · Middleton, WI 53562
8
www.veridt.com
2022
• T E C H N I C A L N O T E •
Verify Identify
Access Control Cable
Recommended Cable Type:
N
on-plenum unshielded unless specifications require plenum or
other cable type.
Cable Length
The left column is the amount of power required and the columns to its right are the maximum cable lengths for
the wire gauge listed in the top row. For example, using a reader that requires 300 mA and 18-guage power cable,
the cable can be no longer than 289 feet
Table 2
•
Power Requirements and Cable Lengths
Power Req.
24 AWG
22 AWG
20 AWG
18 AWG
16 AWG
14 AWG
12 AWG
DC 100 mA
216 feet
342 feet
594 feet
867 feet
1,379 feet
2,197 feet
3,505 feet
DC 200 mA
108 feet
171 feet
297 feet
433 feet
689 feet
1,098 feet
1,755 feet
DC 300 mA
72 feet
113 feet
198 feet
289 feet
459 feet
732 feet
1,169 feet
DC 400 mA
54 feet
85 feet
148 feet
216 feet
344 feet
549 feet
877 feet
DC 500 mA
43 feet
68 feet
119 feet
173 feet
275 feet
439 feet
701 feet
DC 750 mA
28 feet
45 feet
79 feet
115 feet
183 feet
293 feet
467 feet
DC 1000 mA
21 feet
34 feet
59 feet
86 feet
137 feet
219 feet
350 feet
Grounding
Traditional Reader/PACS controller configuration
To avoid grounding problems. The reader, power supply and panel must share a common ground. Failure to do this
may create a floating ground that could create high voltages at reader inputs thereby damaging them.
Low Voltage Power Drop
For both AC and DC low voltage; generally, the maximum acceptable voltage drop is 10%. The cable lengths in Table
2 take into consideration this voltage drop.
Figure 3 • Stealth Series Grounding—Reader to Panel, Reader & Panel to Power Supply
#121
Installation Guide
Stealth Readers
