On 5/30/24 03:14, Roger Price wrote:
On Wed, 29 May 2024, David Christensen wrote:
On 5/29/24 03:36, Roger Price wrote:
On Tue, 28 May 2024, David Christensen wrote:
On 5/28/24 00:28, Roger Price wrote:
I wired my place Cat5. A lot of work, and I regretted it. I live
in the hills behind Nice, an area with a lot of lightning. The
overhead line to my place took a hit and thanks to the Cat5
conductivity I lost equipment.
How do you know that the damage your equipment suffered was due to
the Cat 5e wiring and not due to the electrical power conductors?
Electrical power to my computers comes through 30mA differential
circuit breakers to Eaton Ellipse 1600 UPS units. I had no such
protection for the telephone signal, and I saw flashes at the
telephone junction box. So I summise that the Cat5 wiring did the
damage.
Those UPS's should be able to protect telephone and Ethernet, in
addition to electrical power. Have you applied the UPS's to the
former two?
The UPS's stand next to the workstations and well away from the place
where the telephone line arrives, so I didn't use the UPS's to protect
the telephone line. My fault. Later I added a surge protector to the
copper telephone line. I am now in the process of migrating from copper
to fiber so I will need an extra UPS next the fiber terminator.
Roger
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https://www.eaton.com/sg/en-us/catalog/backup-power-ups-surge-it-power-distribution/eaton-ellipse-pro-ups.html
PS: I once had a lightning strike direct to the house. Frightening.
Although every differential circuit breaker in the house tripped, the
circuit board in the UPS melted. But even when melting, it protected
the Dell T7500. No damage to the T7500, no data lost. I took a photo of
the melt, sent it to Eaton, and they replaced the UPS.
Have you consider applying lightning protection to your house?
1. Lightning rods, down lines, ground rods, perimeter ground loop, etc..
2. Lightning arresters at the electrical, telephone, CATV, etc. service
entrance points.
David
