Body
Warren!
-------- Forwarded Message --------
Subject: Re: [EVGRAY] Solar panel neutral spike
Date: Fri, 21 Sep 2018 08:27:14 -0500
From: Norman Wootan <[email protected]>
To: Jon Gentry <[email protected]>
Jon, I think you will grasp the reality from Warren's experience with
his neutral potential ferrocement hull boat with the sea water,
preventing the lightning from striking, the proposal for lightning
mitigating bouys dropped into ocean will need some thinking as to
"potential gradient" in-order for lightning to even hit cables on
balloons. Think about this!
https://en.wikipedia.org/wiki/Earth_potential_rise
On 9/20/2018 11:05 AM, Jon Gentry wrote:
> I'll read for meaning later. But right now I'm freaking out about two
> six and a half story metal masts on a ferro-concrete boat. Wow! JG
> ------------------------------------------------------------------------
> *From:* Norman Wootan <[email protected]>
> *Sent:* Thursday, September 20, 2018 6:43 AM
> *To:* Jon Gentry
> *Subject:* Fwd: Re: [EVGRAY] Solar panel neutral spike
>
> Jon, I'm trying to find a certain area in the US that has no lightning
> activity due to the natural potential in the area that mitigates
> lightning. Be interesting to test the Theory of grounding bouyes down
> in South America! See:
> https://www.livescience.com/54666-most-lightning-prone-place-in-the-world.html
>
> https://en.wikipedia.org/wiki/Earth_potential_rise
>
> http://igs.nigc.ir/STANDS/BOOK/LIGHTNING-PROTECTION-A.PDF Jon! A good
> example of "Air Termination"!
>
>
>
> -------- Forwarded Message --------
> Subject: Re: [EVGRAY] Solar panel neutral spike
> Date: Mon, 27 Aug 2018 08:36:06 +0000 (UTC)
> From: Warren Keillor [email protected]
> <mailto:[email protected]> [EVGRAY]
> <[email protected]> <mailto:[email protected]>
> Reply-To: [email protected] <mailto:[email protected]>
> To: [email protected] <mailto:[email protected]>
> <[email protected]> <mailto:[email protected]>
>
>
>
> James
>
> You don't go looking for interesting weather when in a boat. You do
> your best to avoid it.
> But just like politics, or other large features of the landscape,
> sometimes it just happens. We do our best as we see it, using our best
> survival skills.
> A fhunderstorm that has lighning hitting very close to you, for hours
> at a time, with no break in the sound, the hair on your arms standing
> out straight in the charged atmosphere, is not a situation one chooses
> to be in, but being on the water, like being in a spacecraft, is a
> bubble of reality, you live in, or not.
> And yes, twin waterspouts between the Guadalope and the Saints, each
> appearing out of a black cloud that seemed a mile up traveling West,
> one right after the other, coming out of what seemed like the same
> place in the sky. It may have been the high masses of both Island
> groups and the narrow channel between them after the broad Atlantic.
> We cut the interval between them by chance, on our way to the Saints.
> Cheers Warren
> Sent from Yahoo Mail on Android
> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature>
>
> On Sun, 26 Aug 2018 at 6:31 PM, James Glinski [email protected]
> <mailto:[email protected]> [EVGRAY]
> <[email protected]> <mailto:[email protected]> wrote:
>
> Have you tried it on a water spout yet ? 😁
>
> On Aug 26, 2018 2:25 AM, "Warren Keillor
> [email protected]
> <mailto:[email protected]> [EVGRAY]"
> <[email protected] <mailto:[email protected]>> wrote:
>
> Mick
> I have been running my schooner's electrical system using PV
> panels on a 12 volt system charging golf cart batteries. It
> seems to be trouble free, so far. The batteries have been
> always fully charged.
> Thete are two metal masts rising up six and a half stories
> from the deck. The half inch stainless steel rigging conducts
> to ground via the ferro cement hull which seems to be always
> at the same potential as the water, when I have measured it.
> I have been in some very frightening lightning storms in the
> Gulf Stream, and the East Coast of the US, being the tallest
> structure on the horizon.
> I have heard that there is a sixty degree cone of protection
> afforded such installations around vessels.
> My experience, scary as it was, seemed to bear this out.
> Lighning repeatedly struck the water on all sides around the
> boat for hours on end with deafening noise and hissing trails
> of bubbles, like snakes on the water, at the point of impact.
> Somehow in these storms, I had no electronics, or electrical
> damage..
> I would not bet on it always working, but it worked for me.
> Cheers Warren
> Sent from Yahoo Mail on Android
> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature>
>
> On Sat, 25 Aug 2018 at 8:26 PM, Mick [email protected]
> <mailto:[email protected]> [EVGRAY]
> <[email protected] <mailto:[email protected]>>
> wrote:
>
> Staying at a friends who had PV solar installed. When they
> were away
> they came back and found a power strip melted that went to
> a treadmill
> and a few of the ceiling fan controllers burned out. Began
> to check the
> circuit and found the ground wire from the Sunny Boy
> inverter cut at the
> sheath inside the service panel. The solar panels are
> about 100 yards
> from the house and grounded to the concrete sunk racks, I
> really think
> there should be a dedicated grounding rod also, but the
> grounding wire
> inside the feed to the pair of breakers just cut not
> bonded to the
> panel. I am pretty sure this is against code besides
> being a hazard.
> Likely a lightening strike nearby pushed a nice big pulse
> through the
> neutral wire and reflected off the inductive loads.
>
> I am furious at this kind of stupidity but before I give
> hell to the
> installer I want to make sure my thinking is correct.
> Perhaps Dave can
> give his two cents if for any reason the inverter should
> be floated like
> this instead of bonded to the panel.
>
> There seems to be a controversy on the topic:
>
> https://www.solarpaneltalk. com/forum/solar-panels-for-
> home/solar-panel-system- equipment/16949-grounding-
> code-690-47-c-3- implementation-with-sma-
> sunnyboy-tl-us-22
> <https://www.solarpaneltalk.com/forum/solar-panels-for-home/solar-panel-system-equipment/16949-grounding-code-690-47-c-3-implementation-with-sma-sunnyboy-tl-us-22>
>
>