[TowerTalk] Lightning..easy fix

[Jim Lux]

On 7/11/13 12:13 PM, Stan Labinsky Jr. wrote:
> re: ## 1 - Actually, Jim, this brings up a question germane to my 100 A
> panel ca. the 60's.  The surge shunts, the fused MOVs, connect to the
> line side of the main disconnect breakers, correct?  If so, how do you
> "double tap" the leads to them?  Apparently a really big deal, if the
> lugs are not designed / approved for multiple lead connections, you fail
> inspection.  Or, do you find a load side on the buses and connect there?
> I ask cause that would be a smart retrofit here.
>

These days, utility supplied transient suppression on the power line is 
often installed on the meter socket: they pull the meter, put a TVSS on 
the meter socket, then reinstall the meter.



> re: ## 2 - Not in my telco's demark box, nothing alarmed, but there are
> some sort of arrestors there.  But, after complaining to the telco about
> a broken clamp on their ground rod, I put one of my own there... for my
> own protection. /-(

That's not unusual. I've never seen an alarmed telco TVSS in a 
residential application.  For myself, since I got fiber to the home, 
it's a non-issue.

>
> Also, my "grounding" connection courtesy of the power company, well is
> the old tie it to the copper pipe.  My well does use copper out to the
> wellhead, but the down pipes are black plastic... (-( hmmm.
>
> I'm planning to make connection to the service cable just below the
> outdoor meter panel in a manner similar to that used to bond antenna
> cables to the base of the tower.  Just have to fabricate an aluminum
> version of the coupler like the ones from PolyPhaser, the neutral/ground
> is in aluminum, so I cannot use something in copper from a commercial
> source.


If you go to the local electrical supply place, they probably have some 
sort of device made to do this.

>
> Stan
>
> -----Original Message----- From: Jim Thomson
> Sent: Thursday, July 11, 2013 11:20 AM
> To: towertalk at contesting.com
> Subject: [TowerTalk] Lightning..easy fix
>
> Date: Thu, 11 Jul 2013 08:59:49 -0400
> From: "Stan Labinsky Jr." <K2STN at frontier.com>
> To: <towertalk at contesting.com>
> Subject: Re: [TowerTalk] TowerTalk Digest, Vol 127, Issue 27
> Message-ID: <675C4E0FEA3E4830A5F14788F2E82F75 at stancommHP>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
>
> ## 1  standard procedure is to use HUGE fused MOV’s  right at the
> entrance panel.
> They are wired from L1  to neutral and also L2 to neutral.   These are
> typ 130-140 v
> rated.  That way, you have 2 x series movs across the 240 line..and a
> mov from’each hot leg to neutral.
> Neutral and ground are bonded  together in main 200A panel.
>
> ## 2  Insurance companies like factory mutual will  insist that telco’s
> in both canada and the usa
> use em.   They are also  alarmed.   On 3 phase setups, 3 MOV’s
> used....and also wired
> hot to neutral.    Ground rods  used around the perimeter of a building.
> The usual brand of entrance panel mov protection that is used is JOSLYN.
> Also used
> at all cell and microwave sites.
>
> Jim   VE7RF
>
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