gfi before surge protector?

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  #1  
Old 07-05-15, 07:40 PM
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gfi before surge protector?

We live in an area that had a lot of thunderstorms and lightening. I loose a modem/router a year. I want to up grade my electronics but if we can't keep a router alive how are we going to protect a large tv with all the peripheral devices that go along with it?
So, I presume the best way to go is a whole house surge protector on the electrical supply and on the incoming phone line. Then add quality surge protectors before the devices.
Do gets my question tonight. Would a gfi help at all? With a good surge protector,? ( thinking of one model that claims to protect to 46000? jeuls) or am I complicating the whole thing?
Any suggestions?
 
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Old 07-06-15, 02:27 AM
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A GFCI (ground fault circuit interrupter) is for personnel (people) protection, not for power line surges. Whole house surge protectors properly installed, are the first line of defense and additional point-of-use surge protectors are often a very good idea. Look for surge arrestors that have the highest joule ratings. All incoming wires; power, copper telephone, cable TV and the like need to have surge protection at the point of entry.
 
  #3  
Old 07-06-15, 10:50 AM
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I took a direct strike 3 weeks ago. My modem not only blew out, but took out some head end equipment too. It was on a UPS (that survived), the underground RG6 was bonded to the service entrance GEC, I had 3 ground rods and a whole house surge protector.
The difficulty in cable modem protection is keeping high surge currents from leaving the unit via the coax shield. For telephone modems, similar issue is keeping high common mode currents off the twisted pair feed. Fiber systems are much better here. Good luck!
 
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