In article ,
Dave Plowman (News) wrote:
In article ,
williamwright wrote:
On 06/04/2021 19:42, Rod Speed wrote:
or structural damage first.

That’s even rarer.

A strike on a building or its aerial usually causes some structural
damage.

Quite - I've seen a house burnt out after an lightening strike.

I, too, have seen that, but the house did have a thatched roof.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On 07/04/2021 04:15, Rod Speed wrote:


"williamwright" wrote in message
...
On 06/04/2021 19:42, Rod Speed wrote:
or structural damage first.

That’s even rarer.

A strike on a building or its aerial usually causes some structural
damage.

Depends on what you call structural damage. Burns, sure, but
only rarely damage that risks the integrity of the building unless
it sets fire to the building which isnt that common.

I've seen the following:
Areas of brickwork damaged or missing (many times)
Chimney pots cracked or destroyed (many times)
Lead flashing perforated or vaporised
Sections of ridge tile damaged or missing
Iron fallpipe loose on wall
Gulley cover missing presumed vaporised
Grittall window frame scorched and distorted, some of the glass broken
Hole in the drive approx 24" wide and 18" deep
Petrol mower in the shed rendered inoperable; turned out the electrics
were damaged, no other shed damage visible

Bill

On 07/04/2021 13:45, Dave Plowman (News) wrote:
In article ,
williamwright wrote:
On 06/04/2021 14:33, Dave Plowman (News) wrote:
But the story teller was very
definite about it being a TV aerial strike.

You often can't tell whether the lightning hit the aerial or the nearby
masonry. I've been to a lot of these.

But would hitting the house structure cause so much electrical damage to
it and the surrounding ones?

Typically it'll be obvious where the strike was; could be anywhere.
Nearby downleads will be melted, masthead amps burnt out. Sometimes the
aerial itself will look OK but the balun with be gone.

Bill

"williamwright" wrote in message
...
On 07/04/2021 04:15, Rod Speed wrote:


"williamwright" wrote in message
...
On 06/04/2021 19:42, Rod Speed wrote:
or structural damage first.

That’s even rarer.

A strike on a building or its aerial usually causes some structural
damage.

Depends on what you call structural damage. Burns, sure, but
only rarely damage that risks the integrity of the building unless
it sets fire to the building which isnt that common.

I've seen the following:
Areas of brickwork damaged or missing (many times)

That has to be soggy brickwork having the water explode.

Chimney pots cracked or destroyed (many times)
Lead flashing perforated or vaporised

That’s not structural damage.

Sections of ridge tile damaged or missing

Soggy again.

Iron fallpipe loose on wall

What the hell is a fallpipe ? I only get big shipping vessels with google.

Gulley cover missing presumed vaporised

Seems unlikely that only the cover is vaporised.

Grittall window frame scorched and distorted, some of the glass broken

That’s not surprising given the metal frame.

Hole in the drive approx 24" wide and 18" deep

What was the construction of the drive ?

Petrol mower in the shed rendered inoperable; turned out the electrics
were damaged, no other shed damage visible

That’s not structural, that’s just another
example of appliances etc being damaged.

On Thu, 8 Apr 2021 05:41:43 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


FLUSH the trolling senile asshole's latest troll****

Yeah, senile Rodent, keep teaching that poor twit what a sick cretin you
really are! LOL

--
"Who or What is Rod Speed?
Rod Speed is an entirely modern phenomenon. Essentially, Rod Speed
is an insecure and worthless individual who has discovered he can
enhance his own self-esteem in his own eyes by playing "the big, hard
man" on the InterNet."
https://www.pcreview.co.uk/threads/r...d-faq.2973853/

In article ,
williamwright wrote:
On 07/04/2021 13:45, Dave Plowman (News) wrote:
In article ,
williamwright wrote:
On 06/04/2021 14:33, Dave Plowman (News) wrote:
But the story teller was very
definite about it being a TV aerial strike.

You often can't tell whether the lightning hit the aerial or the nearby
masonry. I've been to a lot of these.

But would hitting the house structure cause so much electrical damage to
it and the surrounding ones?

Typically it'll be obvious where the strike was; could be anywhere.
Nearby downleads will be melted, masthead amps burnt out. Sometimes the
aerial itself will look OK but the balun with be gone.

Yes - what I'd expect. What I'm not convinced about is an aerial strike
travelling to other houses and doing severe damage there.

--
*Modulation in all things *

Dave Plowman London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" wrote in message
...
In article ,
williamwright wrote:
On 07/04/2021 13:45, Dave Plowman (News) wrote:
In article ,
williamwright wrote:
On 06/04/2021 14:33, Dave Plowman (News) wrote:
But the story teller was very
definite about it being a TV aerial strike.

You often can't tell whether the lightning hit the aerial or the
nearby
masonry. I've been to a lot of these.

But would hitting the house structure cause so much electrical damage
to
it and the surrounding ones?

Typically it'll be obvious where the strike was; could be anywhere.
Nearby downleads will be melted, masthead amps burnt out. Sometimes the
aerial itself will look OK but the balun with be gone.

Yes - what I'd expect. What I'm not convinced about is an aerial strike
travelling to other houses and doing severe damage there.

I've never been convinced that an aerial strike would take out
the entire house mains wiring unless it’s a tiny flat with very
little in the way of mains wiring, let alone other houses.

On Fri, 9 Apr 2021 03:11:11 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


Yes - what I'd expect. What I'm not convinced about is an aerial strike
travelling to other houses and doing severe damage there.

I've never been convinced that

Trust me that you successfully convinced everyone of what a sick, disgusting
senile asshole you are, senile Rodent!

--
"Who or What is Rod Speed?
Rod Speed is an entirely modern phenomenon. Essentially, Rod Speed
is an insecure and worthless individual who has discovered he can
enhance his own self-esteem in his own eyes by playing "the big, hard
man" on the InterNet."
https://www.pcreview.co.uk/threads/r...d-faq.2973853/

"Dave Plowman (News)" wrote:
Yes - I can readily see all that happening. But the story teller was very
definite about it being a TV aerial strike. And that being on a DA. Which
then jumped into the mains and destroyed all of that. And in a couple of
neighbouring houses too.

I'd have expected a major strike to have cause a fire, or structural
damage first.

IIRC, lightning strikes are not necessarily simple - the
single "strike" we tend count may well involve many related
current paths at the same time over some area, just depending
on how the event manifests. Thus the biggest and most obvious
burn mark isn't necessarily the only one.

#Paul

In article , Dave Plowman (News)
scribeth thus
On another group, I heard about a lightning strike to a house, via the TV
aerial. Aerial went to a DA. Seemed it burnt out all the house wiring and
every appliance in it. Requiring the owners to move out for months while
it was all sorted. Seems it also travelled to other houses in the street
too via the mains and caused much damage there too. Was rather surprised
to read this. I've seen a TV destroyed - but not so much extra damage.


Yes over time seem aerials and d feeders vaporised and bricks blown out
of walls it seems its the rapid heating that makes most any moisture
turn into explosive steam that mainly does that.

Had a near miss here one day bloody loud flash and bang took out the
aerial distribution amp!..

Theres a roll of Furze ally earthing tape and rods that I've been
meaning to install when i get aroundtuit!..


Good website here that will text you early warnings if you want them!...


http://www.lightningmaps.org/?lang=e...0;o=0;b=;ts=0;

--
Tony Sayer


Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

In article , Vir Campestris vir.campestris@
invalid.invalid scribeth thus
On 05/04/2021 16:34, Brian Gaff (Sofa) wrote:
I and
the dog both layed down as soon as I felt the tell tale prickling of a high
voltage, but the hot blast and the noise, no wonder I have tinnitus.

You got lucky.

Lightning kills cows because when they _aren't_ hit there can be
significant voltage between the front and back legs.

Andy

Yes step voltage gradient its called, there are vids of footballers
collapsing due to that effect. Can be a million of more volts over a
short distance!..



--
Tony Sayer


Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

On 10/04/2021 23:59, tony sayer wrote:
In article , Vir Campestris vir.campestris@
invalid.invalid scribeth thus
On 05/04/2021 16:34, Brian Gaff (Sofa) wrote:
I and
the dog both layed down as soon as I felt the tell tale prickling of a high
voltage, but the hot blast and the noise, no wonder I have tinnitus.

You got lucky.

Lightning kills cows because when they _aren't_ hit there can be
significant voltage between the front and back legs.

Andy

Yes step voltage gradient its called, there are vids of footballers
collapsing due to that effect. Can be a million of more volts over a
short distance!..



Yes. a lightning strike can be anything from a few volts induced surge
on a nearby line, to a direct GodHatesYou strike that is instantly
lethal to animal life and to most wiring.

When I lived in J'oburg, all the phones would tinkle on nearby strikes,
but a direct strike would burn the house down.

I remember cuddling a gin and tonic and watching from a balcony as a
strike hit the ground 50 meters in front of me, and a dull glow lit up
the sky where another house was burning.


--
Of what good are dead warriors? €¦ Warriors are those who desire battle
more than peace. Those who seek battle despite peace. Those who thump
their spears on the ground and talk of honor. Those who leap high the
battle dance and dream of glory €¦ The good of dead warriors, Mother, is
that they are dead.
Sheri S Tepper: The Awakeners.

In article , Martin Brown
scribeth thus
On 05/04/2021 16:15, Dave Plowman (News) wrote:
On another group, I heard about a lightning strike to a house, via the TV
aerial. Aerial went to a DA. Seemed it burnt out all the house wiring and
every appliance in it. Requiring the owners to move out for months while
it was all sorted. Seems it also travelled to other houses in the street
too via the mains and caused much damage there too. Was rather surprised
to read this. I've seen a TV destroyed - but not so much extra damage.

It seems quite unlikely. Our VH has taken the odd hit and whilst it
takes out the mains for a while the emergency lights survive OK.

A building I was in at work took a big direct hit that found its way
into the internal telephone network deafening the lady on the
switchboard who was unconsolable afterwards (as in it took about a day
to recover her hearing) .

Vapourised the phone cabling in the trunking leaving nasty black marks
on the wall. We felt very aggrieved that the strike hit our apex rather
than the much higher supergrid pylon 100m away. Capricious stuff is
lightning. It was one of those big industrial sheds with a metal roof.

Well look up the "rolling ball" method of assessing a strike likelihood
they very often come in from the side as thats to the strike, discharge
rather! is coming from so the side of a church or building is a better
path to ground than that pylon or mast that you might think was the
better target!...



Induced currents blew out some of the more delicate parts of the
mainframe interface boards whilst the surge suppressors saved themselves
by allowing other more delicate (ie. expensive) components to fry.

Once the damage was assessed we were back on mains power fairly quickly.
Emergency diesel generator cut in for critical systems as the mains went
down. Smelly noisy thing but at least it worked on the day! Internal
phone system was down for most of a week - complete rewire needed.

I have had modems killed by close lightning strikes but that is about
it. You can't rule it out but it must be very unlikely. Most times the
UPS or emergency backup power maintains full operation.

You would have to be very unlucky for it to damage mains wiring but if
it does then the huge currents involved can be very destructive.


--
Tony Sayer


Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

In article , Rod Speed
scribeth thus
Dave Plowman (News) wrote

On another group, I heard about a lightning strike to a house, via the TV
aerial. Aerial went to a DA. Seemed it burnt out all the house wiring and
every appliance in it. Requiring the owners to move out for months while
it was all sorted. Seems it also travelled to other houses in the street
too via the mains and caused much damage there too. Was rather surprised
to read this. I've seen a TV destroyed - but not so much extra damage.

Bet that story is utterly mangled. Cant see how a lightning
strike can take out all the house wiring unless its a very simple
and small house wiring in which case it cant take months to
fix unless there is a severe labor shortage in that area etc.


It can and does in a direct full on strike it causes the wiring to act
like a fuse and expand, more like explode!, and it will blow the plaster
off the walls which can take a lot of time to put right seeing it might
have done other damage like a possible fire!...

--
Tony Sayer


Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

In article , Dave Plowman (News)
scribeth thus
In article ,
williamwright wrote:
On 06/04/2021 14:33, Dave Plowman (News) wrote:
But the story teller was very
definite about it being a TV aerial strike.

You often can't tell whether the lightning hit the aerial or the nearby
masonry. I've been to a lot of these.

But would hitting the house structure cause so much electrical damage to
it and the surrounding ones?


Yes it can if the discharge e current is strong enough and where the
wiring may be on overheads..
--
Tony Sayer


Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

"tony sayer" wrote in message
...
In article , Rod Speed
scribeth thus
Dave Plowman (News) wrote

On another group, I heard about a lightning strike to a house, via the
TV
aerial. Aerial went to a DA. Seemed it burnt out all the house wiring
and
every appliance in it. Requiring the owners to move out for months while
it was all sorted. Seems it also travelled to other houses in the street
too via the mains and caused much damage there too. Was rather surprised
to read this. I've seen a TV destroyed - but not so much extra damage.

Bet that story is utterly mangled. Cant see how a lightning
strike can take out all the house wiring unless its a very simple
and small house wiring in which case it cant take months to
fix unless there is a severe labor shortage in that area etc.


It can and does in a direct full on strike it causes the wiring to act
like a fuse and expand, more like explode!, and it will blow the plaster
off the walls which can take a lot of time to put right seeing it might
have done other damage like a possible fire!...

I didnt doubt that effect happens, my problem is with the
WHOLE HOUSE WIRING claim which is as I said very unlikely
unless its a very simple and very small house in which case
it cant take months to fix unless there is a severe labor
shortage in that area etc.

On Thu, 15 Apr 2021 05:51:08 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH the trolling senile asshole's latest troll**** unread

On 06/04/2021 19:42, Rod Speed wrote:


I'd have expected a major strike to have cause a fire,

That’s actually quite rare except when it strikes a tree.

or structural damage first.

That’s even rarer.

Nearest I have been to one was to a house whose garden backed on to
ours, less than 100 metres away. I was standing by our back door at the
time and the effectively simultaneous flash and bang certainly made me
jump. That took out some of the chimney brickwork and a good proportion
of the tiles on one side of the roof. (I recognise that these are not
particularly securely attached).