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HomeSecurityAlarm SystemsElectrical Signature of Water Damage

Electrical Signature of Water Damage

If water had got into the wiring of an alarm or access control system how would it show itself and how should we go about troubleshooting for it?

A: Water damage to wiring is much more common that you’d think. As water penetrates the sheath what you’re going to get first is noise on the wire indicating high frequency leakage between the conductors. Water conducts electricity a whole lot better than PVC, remember.

You’ll also get greater impedance (this may not be measurable, even on an oscilloscope) and the level of isolation will fall. As the copper corrodes you’ll get increasing resistance and a lot more noise. In the end you’ll get false alarms as electrical signal drops below the circuits designed thresholds.

We’d recommend using a gel-filled cable for wet runs. If you need to re-install the job as a result of water damage, invest in this cable type – it won’t let you down.

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SEN News
SEN Newshttps://sen.news
Security & Electronics Networks - Leading the Security Industry with News and Latest Events. Providing information and pre-release updates on the latest tech and bringing it all to you daily. SEN News has been in print for over 20 years and has grown strong as a worldwide resource in digital media.

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