Lightning strike. - Techwatch Support Forums: Digital & Satellite TV, FTA, Cable, Computers, Mobile Phones, Apple and General Tech Forums

reddiesel · 26-02-08, 03:32 AM

Is there a way of grounding the dish, to stop any damage to equipment in case of a lightning strike ? or would that make it more liable to be struck?.

madrat · 26-02-08, 02:01 PM

I have always wondered this but apparently no one in this country take is seriously for some reason.

Analoguesat · 26-02-08, 02:27 PM

If lightning strikes the dish its still going to blow out most of your electric circuits via the coax cable to the receiver even if the dish is grounded.

If the dish is above the roofline then it may be worth grounding the dish to stop charge building up on it, but if its below the roofline its not going to make any difference whatsoever - charge will build up on the highest point of the building to some degree in any case.

madrat · 26-02-08, 02:29 PM

Ive seen systems that ground the dish and coax.

rd100 · 26-02-08, 05:46 PM

All my dishes at home and ones install at work are grounded

reddiesel · 27-02-08, 01:36 AM

Quote:

Originally Posted by rd100

All my dishes at home and ones install at work are grounded

How do you ground them RD ? To a water pipe or something like that, or to mains supply earth?.
I would have thought that if it did strike it would take the easiest path to earth and may not do so much damage.

reddiesel · 28-02-08, 01:35 AM

And rubber mounted in case of earthquakes

.

scopx · 28-02-08, 02:43 PM

If I recall correctly (which happens very seldom anymore), there was an article in an old Frank Baylin Satellite tech book stating how to install a voltage regulator chip somewhere at the dish to protect the electrical from overvoltage.
Tom

rd100 · 28-02-08, 06:01 PM

I always ground my tv aerials and all my dishes and at home and the lnb feed but do not need to ground my floor mount dishes only the lnb coax feeds as the pole on the dishes in the garden goes direct in to the ground any way,

In the USA it is the law that dishes must be grounded and companies like directv will not do a install with out it on it see page 2 of this pdf http://www.directv.com/learn/pdf/SelfInstallGuide.pdf

See the photos i have attached this is what i use at home and in work and i think if i did not use one in work i would get the sack, They just go in between the coax cable then put the earth cable in to the ground by using a grounding rod that is it, Also if your tv aerial or dish is wall mounted you need to ground the bracket as well

If you need more info just type " how to ground a satellite dish " in to google,

Also you can get hold of them here Grounding Supplies

Quote:

Originally Posted by reddiesel

How do you ground them RD ? To a water pipe or something like that, or to mains supply earth?.
I would have thought that if it did strike it would take the easiest path to earth and may not do so much damage.

reddiesel · 28-02-08, 11:30 PM

Thanks for that rd100 just what i was looking for.

26-02-08, 03:32 AM	#1 (permalink)
reddiesel Super Moderator Join Date: May 2007 Location: Beds Posts: 5,613 Thanks: 175 Thanked 949 Times in 832 Posts	Lightning strike. Is there a way of grounding the dish, to stop any damage to equipment in case of a lightning strike ? or would that make it more liable to be struck?.

26-02-08, 02:01 PM	#2 (permalink)
madrat Senior Member Join Date: Mar 2007 Location: Leicestershire Posts: 2,208 Thanks: 11 Thanked 71 Times in 61 Posts	Re: Lightning strike. I have always wondered this but apparently no one in this country take is seriously for some reason. __________________ *VIRGIN, STOP SENDING ME JUNK MAIL.*

26-02-08, 02:27 PM	#3 (permalink)
Analoguesat manic midlander retired mod Join Date: Jan 2006 Location: Scottish Borders Posts: 11,668 Thanks: 21 Thanked 1,334 Times in 985 Posts	Re: Lightning strike. If lightning strikes the dish its still going to blow out most of your electric circuits via the coax cable to the receiver even if the dish is grounded. If the dish is above the roofline then it may be worth grounding the dish to stop charge building up on it, but if its below the roofline its not going to make any difference whatsoever - charge will build up on the highest point of the building to some degree in any case. __________________ Basic forum rules for both satellite & cable: no keys no patches no offering or asking for card shares Anyone pm'ing me for details of card sharing or anything to do with hacking cable will be banned immediately Analogue forever!!

26-02-08, 02:29 PM	#4 (permalink)
madrat Senior Member Join Date: Mar 2007 Location: Leicestershire Posts: 2,208 Thanks: 11 Thanked 71 Times in 61 Posts	Re: Lightning strike. Ive seen systems that ground the dish and coax. __________________ *VIRGIN, STOP SENDING ME JUNK MAIL.*

26-02-08, 05:46 PM	#5 (permalink)
rd100 Senior Member Join Date: Jun 2007 Posts: 381 Thanks: 2 Thanked 26 Times in 22 Posts	Re: Lightning strike. All my dishes at home and ones install at work are grounded __________________ Prodelin 3.7m Prodelin 1.8m Andrew 1.2m , Vantage 221s ci Manhattan xt-f Arion HD, Orbit & showtime sub & AFN,

28-02-08, 01:35 AM	#7 (permalink)
reddiesel Super Moderator Join Date: May 2007 Location: Beds Posts: 5,613 Thanks: 175 Thanked 949 Times in 832 Posts	Re: Lightning strike. And rubber mounted in case of earthquakes .

28-02-08, 02:43 PM	#8 (permalink)
scopx Junior Member Join Date: Feb 2008 Posts: 27 Thanks: 0 Thanked 2 Times in 2 Posts	Re: Lightning strike. If I recall correctly (which happens very seldom anymore), there was an article in an old Frank Baylin Satellite tech book stating how to install a voltage regulator chip somewhere at the dish to protect the electrical from overvoltage. Tom

28-02-08, 11:30 PM	#10 (permalink)
reddiesel Super Moderator Join Date: May 2007 Location: Beds Posts: 5,613 Thanks: 175 Thanked 949 Times in 832 Posts	Re: Lightning strike. Thanks for that rd100 just what i was looking for.

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