Greetings.

Im doing a little project here in our marina and I was hoping you
might be able to help me.

What we are doing is trying to get an average of what the potential to
ground is in most marina's. Since you fine folks are spread out across
the country and world I figure this is the best place to get great
data.

After laying out a grid we took electrical reading on several slips in
the area. What we have found on averge is .6 volts AC and .25 volts DC
in the water. I found that most Zinc savers will not even kick in
until 1.5 volts. So we figure we are in a very safe area as far as
electrolysis.

But we wonder if our marina is hotter than most because it is an old
marina with lots of metal in the water. It been here since the 1930's.

So I asking if you could help me and ...perhaps yourself to protect
your boat with a simple project. It will require a quality volt meter.
What I ask you to do is stick one lead of your volt meter in the water
and stick the other lead in your docks electrical plugs ground plug.
Thats the round one on a 3 prong electrical plug. Please read the AC
voltage and the DC voltage and let me know what you find out. Find out
if you have a problem that will eat your shaft. zincs, props, anything
that is metal.

Thanks for your help.

Joe

There's a good article by Kevin Hughes on the subject at:
http://www.sailnet.com/collections/g...ame=Electrical

Next month, Kevin's topic, dare I say it, yes I dare! LIGHTNING PROTECTION -
BWAHAHAHAHAHAHAHA!
Scout


"Joe" wrote in message
om...
Greetings.

Im doing a little project here in our marina and I was hoping you
might be able to help me.

What we are doing is trying to get an average of what the potential to
ground is in most marina's. Since you fine folks are spread out across
the country and world I figure this is the best place to get great
data.

After laying out a grid we took electrical reading on several slips in
the area. What we have found on averge is .6 volts AC and .25 volts DC
in the water. I found that most Zinc savers will not even kick in
until 1.5 volts. So we figure we are in a very safe area as far as
electrolysis.

But we wonder if our marina is hotter than most because it is an old
marina with lots of metal in the water. It been here since the 1930's.

So I asking if you could help me and ...perhaps yourself to protect
your boat with a simple project. It will require a quality volt meter.
What I ask you to do is stick one lead of your volt meter in the water
and stick the other lead in your docks electrical plugs ground plug.
Thats the round one on a 3 prong electrical plug. Please read the AC
voltage and the DC voltage and let me know what you find out. Find out
if you have a problem that will eat your shaft. zincs, props, anything
that is metal.

Thanks for your help.

Joe

"Scout" wrote in message ...
There's a good article by Kevin Hughes on the subject at:
http://www.sailnet.com/collections/g...ame=Electrical

Next month, Kevin's topic, dare I say it, yes I dare! LIGHTNING PROTECTION -
BWAHAHAHAHAHAHAHA!
Scout


Thanks for the Link Scout,

But we allready knew all the information in the article.

What we are trying to find out is:
What is the voltage in your marina? Both AC & DC
We want to get an ideal of what is average in most marinas.

Thanks

Joe






"Joe" wrote in message
om...
Greetings.

Im doing a little project here in our marina and I was hoping you
might be able to help me.

What we are doing is trying to get an average of what the potential to
ground is in most marina's. Since you fine folks are spread out across
the country and world I figure this is the best place to get great
data.

After laying out a grid we took electrical reading on several slips in
the area. What we have found on averge is .6 volts AC and .25 volts DC
in the water. I found that most Zinc savers will not even kick in
until 1.5 volts. So we figure we are in a very safe area as far as
electrolysis.

But we wonder if our marina is hotter than most because it is an old
marina with lots of metal in the water. It been here since the 1930's.

So I asking if you could help me and ...perhaps yourself to protect
your boat with a simple project. It will require a quality volt meter.
What I ask you to do is stick one lead of your volt meter in the water
and stick the other lead in your docks electrical plugs ground plug.
Thats the round one on a 3 prong electrical plug. Please read the AC
voltage and the DC voltage and let me know what you find out. Find out
if you have a problem that will eat your shaft. zincs, props, anything
that is metal.

Thanks for your help.

Joe