Jimmie D. wrote"
"One way to determine the low frequency effectiveness of a ground is to
connect the hot side of the power mains to the ground through a fuse and
see how big of a fuse you can blow."

Replace the fuse with*a light bulb. If a high-wattage light bulb burns
brightly, the earth connection is good at the power frequency.

Best regards, Richard Harrison, KB5WZI

(Richard Harrison) wrote in news:16641-470666E0-
:

....
Replace the fuse with*a light bulb. If a high-wattage light bulb burns
brightly, the earth connection is good at the power frequency.

Yet another calibrated screw driver approach. The undefined quantities
"high-wattage" and "burns brightly" characterise the accuracy of the
method.

There are simple and safe methods for passing a known or measurable current
through a ground system and measuring the ground system potential rise
above the general mass of earth... a bit of Googling will turn up far
better methods that some of those described in this thread.

Owen

Richard Harrison wrote:
Jimmie D. wrote"
"One way to determine the low frequency effectiveness of a ground is to
connect the hot side of the power mains to the ground through a fuse and
see how big of a fuse you can blow."

Replace the fuse with a light bulb. If a high-wattage light bulb burns
brightly, the earth connection is good at the power frequency.

Best regards, Richard Harrison, KB5WZI

Tried that, I couldnt discern the difference between a 10 ohm ground
and a 25 ohm ground. The "blown fuse method" really works well and is
no where as dangerous as people make it to be. I Have a little deal
made up out of PVC pipe with a fuse holder and neon indicator to let
me know whether the fuse blew or not.

Please tell me, how is this any more dangerous that troubleshooting
under the chassis of a tube receiver.

Jimmie

On Sat, 06 Oct 2007 05:53:51 -0700, JIMMIE
wrote:

Please tell me, how is this any more dangerous that troubleshooting
under the chassis of a tube receiver.

You are holding one conductor, and standing on the other.