Patrick,
1. Neither of us have any idea whether my licensed PE did (or did not do) any
calculations. Since it's his job to know and he's done it for decades, I trust
his opinion. However, to satisfy you, I'm willing to pass my PE's contact
information to you (off list) so you can ask him if he did any calculations.
Please don't tell him I referred you.
2. 2/0 is a safer bet than smaller gauge wire. Since the potential loss is
great, I'd rather err on the large side. And again, it is a ONE TIME
investment. Unlike many penny-wise and pound foolish hams, when my butt is on
the line, I have no issues with spending more as long as the pocketbook allows.
Compared to the overall cost of installing a used TX472 + F12 C-4XL, the cost
of 2/0 wire was less than tiny.
vy 73,
Bryan WA7PRC
Date: Tue, 03 Feb 2015 07:58:06 -0600
From: Patrick Greenlee
Subject: Re: [TowerTalk] [Bulk] Antenna to Shack Ground Connection
It is unlikely that he did calculations to arrive at his 2/0 statement.
More likely it is a "stock" prescription that works with all interested
parties and likely serves its intended purpose. Frequently practitioners
of a discipline give stock answers to stock problems. Do not assume
your specific case got special custom treatment. That is unlikely.
Patrick NJ5G
On 2/3/2015 3:14 AM, Bryan WA7PRC via TowerTalk wrote:
> When I erected my tower, my PE (a ham who was recommended by TT people) wrote:
>
> "Each tower leg shall be bonded to one ground electrode minimum using 2/0 or
> equivalent wire">
> I presume he knows of what he writes. Since it's a one-time investment and I
> didn't want to PO my PE> (and also not pass my county's final inspection), I
> just did what he wrote.>
> vy 73,> Bryan WA7PRC
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|