[R-390] Building Standards

[Craig C. Heaton]

This is the device used by the company I've retired from to test the
grounding grids under hydrogen plants, works real well, ain't cheap. Wishing
I could borrow one today.

http://www.aemc.com/products/html/moreinfo.asp?id=50105&dbname=products




73's
wd8kdg
Craig


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-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of Tisha Hayes
Sent: Tuesday, August 04, 2009 10:17 AM
To: r-390 at mailman.qth.net
Subject: Re: [R-390] Building Standards

What I use is a James G. Biddle Co. Series 4, Earth Tester with a MEGGER
trademark. It is at least 60 years old and has the C1, P1, P2, C2
connections on the side and two slide switches that can attach C1/P1 or
C2/P2.

It "could" be used to test insulation but it is first and foremost a earth
tester.

There is a steel plate on the bottom with instructions that show the closing
of switch C1/P1 and tying C1 to the ground rod. Then putting a test rod 50'
away and attaching that to P2, then a second test rod 50' further away and
attaching that to C2.

I have access to an insulation tester (through work) but it is really only
of value for finding problems with motors that have high resistance leakage
from water intrusion.

I loaned the Series 4 to work only once. It came back with two of the rubber
feet torn off and a Coke spilled on the meter face. Now if work needs to
borrow any of my test gear I charge them $50/day and put it on my expenses.
They had a fit until I told them to go to Testmart and look at renting the
same gear.
-- 
Ms. Tisha Hayes

----------------
"I will not recant the truth. I am corn, not chaff; I will not be blown away
with the wind or burst by the flail. I will survive both."
-Walter Milne, 1558
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