Lightning Protection FREE cabling and networking Helpdesk
 Question by Toti Lopez posted 07 Jun 2005
 Lightning Protection
Is it possible to ground CAT5 cable without the use of a surge protector for lightming protection?

 Answer by Dmitri Abaimov posted 09 Jun 2005
Dear Toti,

The short answer is No.

You DO NOT ground the pairs of a CAT5e (CAT6) cable, they are supposed to be disconnected from the ground plane at all times. You have to use specialized high-frequency lightning arrest devices to protect your outside network connections. Note that in this case you may or may not be able to use these cables for phones as they are designed for passing frequencies much higher that those that phones operate at. Check with the lightning protector manual before you plan using it for both voice and data at the same time.

Dmitri Abaimov, RCDD

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