Cable Length / Voltage Drop
Cable Length / Voltage DropCat6/RG59 max distance, 12V drop. Fast, free and secure — works in your browser. By AK Computer, Dwarka.
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How to use
- 1 Choose the cable type (Cat6 for IP or RG59 for analog).
- 2 Enter the run length and the supply voltage.
- 3 Enter the camera current draw for DC power runs.
- 4 Read the voltage drop and whether the run is within limits.
Frequently Asked Questions
What is the maximum Cat6 cable length for an IP camera?
Ethernet including PoE is rated to about 100 metres per run. Beyond that you need a PoE extender or a switch in between to keep the link stable.
Why does my 12V camera flicker on a long cable?
Long thin cable causes voltage drop, so the camera receives less than 12V. Use thicker gauge wire, a higher supply voltage, or power locally to fix it.
How far can RG59 carry an analog CCTV signal?
Quality RG59 with a proper power core typically runs well up to around 300 metres for analog, though longer runs may need a signal booster.