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When and How Should a Surge Protector Be Used on a Fixed Switch?

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Common Causes of Lightning Strikes

  • Outdoor network cables or power cables are routed overhead.
  • A switch is deployed outdoors but is not properly grounded.

Damages of Lightning Strikes
  • If power cables of a switch are routed overhead in an outdoor environment, lightning strikes may burn the power supplies.
  • If network cables of a switch are routed overhead in an outdoor environment, lightning strikes may burn interfaces of the switch.
When a switch undergoes lightning strikes, overvoltage is induced by lightning on network cables and transmitted to interior of the chassis. The surge protection measures, such as lightning rod and chassis grounding cannot prevent the damage. Therefore, surge protectors or surge protection circuits are recommended.

Surge Protector Use Precautions Take the following precautions to protect a switch from lightning:
  • Ensure that the ground cable is connected to a ground bar or a ground point on the cabinet.
  • Avoid routing cables overhead in an outdoor environment. Bury cables underground or route them in steel tubes.
  • To protect network interfaces against lightning, use 8-line surge protectors (or Huawei certified 4-line surge protectors).
  • When installing a network interface surge protector, connect the IN end to terminals and the OUT end to network interfaces of the switch.
If a fixed switch is installed in a network box, follow these instructions:
  • Connect the ground cables of the switch and surge protectors to the ground bar in the network box.
  • The maximum length of a ground cable cannot exceed 40 cm, and a length of smaller than 15 cm is recommended.
  • If the network box is located outdoors and power cables are routed aerially over a long distance (more than 300 m) to the network box, it is recommended that you install a power supply surge protector in the network box. The decoupled power cable must be at least 3 m long
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Posted on Dec 08, 2016

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Posted on Jan 02, 2017

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I have a 60' lg..flat screen..walked in house.heard lighting in a distance.my daughter turned the tv on..then it shut off..think lighting hit it..any way to fix//


Always a good idea to have a "surge protector" between the wall outlet for electrical and the appliance plugged into it. A surge protector will prevent a surge that could damage your set. $10.

Feb 16, 2015 | LG Televison & Video

Tip

Surge protector for refrigerator power


I installed a surge protector on the electrical outlet that powers my LG refrigerator as recommended by the repair tech after my first warranty repair (refrigerator fan and main board). The board that was replaced actually had a burn mark on it where one of the components had fried.
Standard computer plug strip surge protectors may not be large enough for a refrigerator load. I used a plug-in surge protector that is made for use in offices for copiers and large printers since it has the capacity to handle a refrigerator load. Make sure it is one that does not cut off power so the refrigerator will continue to operate if the protector is overloaded or fails.

on Sep 18, 2009 | LG LFX25960ST Stainless Steel French Door...

2 Answers

Had power surge. Tv was on surge protector. Now no power will come on and just makes a buzzing sound.


Have you tried plugging it in without the surge protector? I would wager that either a) the surge protector needs to be reset/turned on and off depending on the model or b) either your TV and/or surge protector have been damaged by the power surge.

Try plugging the TV straight into the outlet and see if that helps.

Oct 25, 2012 | Televison & Video

1 Answer

My desktop computer wont power on


Suggest you see if the problem is the Power On switch, or the Power Supply.

(First check to see if the receptacle in the surge protector, that the computer is plugged into, has power.
Have had a few bad surge protectors, where just THAT receptacle was bad.

"Hmmm, surge protector power on LED light is lit. Monitor, printer, and router have power, that are plugged into the surge protector.

Plugged a lamp into THAT receptacle, and found it to be bad)

To test whether the Power On switch, or the Power Supply is bad, a jumper wire is used to bypass the Power On switch.

[ The Power On switch is located inside the plastic Power On button.
This is an example of a generic ATX Power On switch, that I have found fits many computers,

http://www.directron.com/atxswitch.html ]

The jumper wire is used on the 20, or 24-pin ATX main power cable's connector.
While still plugged into the motherboard.

The jumper wire connects to the Soft Power On wire, (Green), and to any Ground wire. (Black)

Example of a 20-pin ATX main power cable, and it's respective connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

Example of a 24-pin ATX main power cable, and it's respective connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

Using the jumper (Wire) to bypass the Power On switch, turns the Power Supply on?
The problem is a bad Power On switch.

Using the jumper to bypass the Power On switch, does Not turn the Power Supply on?
The problem is a bad Power Supply.

There is a correct procedure for performing this test.
Post back in a Comment if you wish to know.

Regards,
joecoolvette

Sep 20, 2010 | Computers & Internet

1 Answer

I had a power outage a couple nights ago, which has caused my television to not turn on. It is a Toshiba model CZ27T31, which was off & plugged into a surge protector at the time the storm knocked the...


Please check if your surge protector is working properly now. There is possibility that the surge protector is blown off due to high voltage surge. Check if your surge protector has a reset switch which some of the surge protectors have. If the problem still persists then you have to call the technician to replace the safety fuse which is inside the TV. The cost will not be much. I will personally recommend that you change your TV as it has outlived its life being 10 yrs old.

Aug 10, 2010 | Toshiba Televison & Video

1 Answer

No power cannot turn on


Suggest you check the simple stuff first.

Not checking is akin to a car that won't start, and tearing apart the entire fuel system, only to find it was just out of gas.

1) Make sure the receptacle the surge protector is plugged into, has power. Surge protector Power On light should be lit.

2) Check THE receptacle in the surge protector, that the computer itself, is plugged into.
Have had a number of expense surge protectors, where just THAT receptacle was bad.

("Hmmm, surge protector Power On LED light is lit. Monitor, printer, sound system, and router plugged into the surge protector has power. Should be good to go.

NOT!
Plug a table lamp, or similar device into THAT receptacle.
Make SURE it has power)

Surge protector, and receptacle in surge protector checks out?
Bypass the Power On switch.

See if the problem is a $5 Power On switch, or the Power Supply.

(Generic ATX Power On switch that I have found fits many computers,

http://www.directron.com/atxswitch.html

{The Power On switch, is located inside the plastic Power On button assembly}

This is information about computer Power Supply's,

http://en.wikipedia.org/wiki/Computer_power_supply

This is a basic example of an SMPS, (Photo at upper right. You can click on the photo to enlarge), and info about.
(Switched-Mode Power Supply. The main type of power supply used in personal computers),

http://en.wikipedia.org/wiki/Switched-mode_power_supply

By bypassing the Power On switch, you will be able to determine if the problem is the switch, or Power Supply.

Bypassing the Power On switch turns the Power Supply on?
Bad Power On switch.

Bypassing the Power On switch does Not turn the Power Supply on?
Bad Power Supply.

A jumper wire is used on the 20, or 24-pin ATX main power cable.
The jumper wire goes to the Soft Power On, (PS_ON. Green in color), to ANY Ground wire.
(ALL Black wires are Ground wires)
A MOMENTARY contact is used.

(Example of a 24-pin ATX main power cable, and it's respective connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24 )

In order to guide you in this procedure, I need to know the computer manufacturer name, and Model Number.

On a desktop computer this will be located on the Back of the computer tower, (Next to the Windows product key), or up on the side of the tower.
Some models have it where there is a door you open in the front, and the product number, or model number is located there.

Post back in a Comment.

Aug 07, 2010 | HP Computers & Internet

1 Answer

My desktop dont come on


1) Check THE receptacle in the surge protector the computer is plugged into.

I have found more than once that One bad receptacle in the surge protector is bad.

"Hmmm, surge protector power on light is lit." "Monitor has power, amp for the speakers has power, and the router has power."
All plugged in to the same surge protector.

Tried a table lamp into the receptacle the computer was plugged into, Nothing.
Replace surge protector.

2) Bypass the Soft Power On of the Power Supply, and see if the problem is the Power On switch, or the Power Supply.

If you bypass the Soft Power On of the Power Supply, and the Power Supply comes on, the problem is a bad Power On switch.

If you bypass the Soft Power On of the Power Supply, and the Power Supply does Not come on, the problem is the Power Supply.

If you wish to know how to perform this simple test, just state so in a Comment.
(Believe upper right of your page)

Jun 17, 2010 | E-Machines eMachines Desktop PC

3 Answers

My daughters xps 200 won't start, she presses the button and nothing. She has checked the surge protector that it is pluged into and it is OK... is there a reset button is there was a power surge??


most surge protectors have some sort of on/off switch and a reset button. If there was a surge then you would need to pres the reset button to get the surge protector to function again. If there was no surge then try using the on/off switch on the surge protector to see if that helps. Also try simply unplugging the power cord from the back of the desktop while the computer is turned off. This will sometime also help.

Oct 12, 2009 | Dell XPS 200 PC Desktop

2 Answers

Does my samsung tv keeping turning itself off because of not having plugged it into a surge protector or is it more a fault with my tv


It is a fault with your power supply module actually inside the tv...take it to a local service center or if its under warranty take it back. surge protectors help prevent issues like this occuring due to damage to the power supply from surges but not having one wont cause these problems unless it has recieved a surge.....in future i would use a surge protector on all your expensive appliances, surges and power fluctuations are very common in mains power i live near the mines and we have power problems all the time!! hope this helps,ben

Aug 11, 2009 | Samsung LE40R74BDX 40 in. LCD Television

2 Answers

PROBLEM WITH MY HUB DES-10160(D-LINK)


Yes the LAN will report plugged and unplugged when the hub goes on and off.

Is this a new or used hub?
If it is used, how old is it?
Is it plugged into a good power source?
If it's plugged into a surge protector, do any other the other items plugged into the surge protector do the same power on and off?
Has it sustained any damage recently (lightening storms, power surges in the house etc).

Jul 30, 2008 | D-Link DES-1024D Express EtherNetwork...

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