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2017/11
WIRE DISTANCE CHARTS
WIRE DISTANCE CAPACITY
The distance capability of wire is dependent on its ability to deliver DC power, and separately, to deliver high-frequency
data signals.
The graph below shows maximum power delivery when using a 55V power supply. If you are not delivering power to
your camera (or other remote device), then this graph does not apply. Figure 5 shows the maximum network data rate.
A Distance Calculator can be found at www.nvtphybridge.com.
PoE devices require a minimum of 43V to operate. With a 55V supply, we have 13V of allowable voltage drop on the
wire.
The voltage will dip in proportion to the remote (camera) load. The graph below shows what distances are supported for
various loads and wire types.
●
The voltage will dip in proportion to the remote (camera) load. The graph below shows what distances are
supported for various loads and wire types.
●
Start with the Powered Device (camera) wattage at the left. Sometimes PoE devices are listed as to their PoE
Class rather than wattage. If this is the case, use the colored classes instead.
●
Now read over to the right until you find your kind of wire. Then look up (feet) or down (meters) to find your
maximum wire distance. If your wire is not among the examples, simply measure its total resistance and find
that value on the right side of the graph. The maximum supported wattage is on the left.
Figure 5 - Data Distance Chart
Wire Distance
3.0 W
0 W
4.0 W
5.0 W
6.0 W
8.0 W
10 W
12 W
15 W
18 W
20 W
25 W
30 W
40 W
50 W
2.0 W
2.5 W
24
38
23
21
19
16
14
12
11
9
7
6
4
3
28
30
m
40
m
50
m
60
m
80
m
100
m
12
0
m
15
0
m
18
0
m
200
m
250
m
300
m
400
m
500
m
600
m
800
m
1,000
m
1,
200
m
1,
500
m
1,
800
m
2,000
m
98 ft
131 ft
164 ft 197 ft
262 ft
328 ft 397 ft
492 ft 590 ft 656 ft 820 ft 984 ft
1,312 ft
1,640 ft 1,968 ft
2,624 ft
3,280 ft 3,936 ft
4,920 ft 5,904 ft 6,560 ft
2,500
m
3,000
m
4,000
m
5,000
m
8,200 ft 9,840 ft
13,120 ft
16,400 ft
1
1
P E
C
P
C
C
PoE Class 1
2
P E
C
2
P
C
PoE Class 2
3
3
E
C
Po C
C
3
P
PoE Class 3
P E
C
4
Class
o
PoE Class 4
h
P
w r
H
H
i
ig
h
h
High
h
P
Power
Power
P we
Total Wire Resistance
Camera Wattage
NV-EC1701U Power Data Distance
6
4
4
P
r
8
/
/
//
2
22
2
2
o
P
P
P
P
r
r
C
G
1
1
PP
r
Data Limited
Cat6
4P
r
18/2
or
Cat5
4P
r
Cat6
23
AW
G 1
Pr
Cat5
24
AW
G 1
Pr
Data Limited
Complete Installation Guide
Model NV-EC1701U
EoC Ethernet over Coax Transceiver
with PoE, PoE+, or High Power PoE
