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Jack Sparrow View Drop Down
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    Posted: 22 Jun 10 at 11:38pm
Originally posted by timg

Originally posted by Jack Sparrow

It's leakage then... as it wasn't a static one off bolt, it was a tingle, when you put your hand on / very close to the mast.

dude....after careful consideration since this afternoon's post.....for goodness sake (seriously mate) move the boat and keep the child away.

I am nervous for you.

Timg



I have sent an email to the clubs office manager to see if we can get to the bottom of it. Thanks for the concern.
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Posts: 2965 		Post Options Post Options   Quote Jack Sparrow Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 11:35pm
Originally posted by YerTiz1851

You'd better move it quick. Two years in the making and you nearly blow it
up in the dinghy park. Maybe the Banshee Ambulance is equipped with one
of those 'heart starting machines' and Cookie didn't tell you???

TTFN



It has been the most unlucky build experience, and the way it has been going I can well imagine when I get down to the club to move the boat all that will be left is a pile of black dust. Oh and Bishop Skinner left me an answer machine message asking me to ring them about my insurance, so it probably isn't insured or some other bonkers situation will arise. I'm getting quite scarred to sail it just in case we sail into the middle of the remaking of JAWS 15 "pay back time" and the special effects man mistakes us for the new ORCA and sends in the shark!
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 10:40pm

Originally posted by Jack Sparrow

It's leakage then... as it wasn't a static one off bolt, it was a tingle, when you put your hand on / very close to the mast.

dude....after careful consideration since this afternoon's post.....for goodness sake (seriously mate) move the boat and keep the child away.

I am nervous for you.

Timg
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alstorer View Drop Down
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Posts: 2899 		Post Options Post Options   Quote alstorer Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 9:42pm
close to the pylon should be "safer" than midway between pylons, surely? Cables are further away from the ground...
-_
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Posts: 15 		Post Options Post Options   Quote YerTiz1851 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 9:02pm
You'd better move it quick. Two years in the making and you nearly blow it
up in the dinghy park. Maybe the Banshee Ambulance is equipped with one
of those 'heart starting machines' and Cookie didn't tell you???

TTFN

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Jack Sparrow View Drop Down
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Posts: 2965 		Post Options Post Options   Quote Jack Sparrow Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 5:23pm
It's leakage then... as it wasn't a static one off bolt, it was a tingle, when you put your hand on / very close to the mast.
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NickA View Drop Down
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Posts: 784 		Post Options Post Options   Quote NickA Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 5:12pm
All kinds of meteorological stuff affects the field
strength around power lines. Pollen I've not heard of as
a cause, but humidity certainly.

I agree that the sailing club need to call in the
electricity distribution people. They may not be aware
that tall conducting objects are being stored under their
high voltage power lines!

... and it's not "around the base of" the pylons that's
the worry - it's the field at mast top height.

PS: if it's "static" (accumulated charge) it will hurt
briefly - like touching a car door when wearing a shell
suit (like you do!) - you could probably live with that
(the shock, not the shell suit, obviously). More
worrying if it's leakage - wherein you get a continuous
tingle for as long as you hold the mast.
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Posts: 2143 		Post Options Post Options   Quote getafix Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 4:05pm
on a serious note, I would imagine Burghfield's club manager should be able to ask (aka force) the electricity company to check static around the base of the pylons is within safe limits on H&SE grounds and advise on whether or not certain/any boats can be stored there (if it is BSC, sounds like it)
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Posts: 2965 		Post Options Post Options   Quote Jack Sparrow Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 2:22pm
it hurt all right. Both me and my son. The boat is carbon also. Interesting a RS200 guy had had shocks on the same day. The weekend had a heavy pollen count so maybe high static charge? I don't know.
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Posts: 784 		Post Options Post Options   Quote NickA Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 10 at 2:17pm
Speaking as a bona fide electrical engineer .....

There will be an electric field around the wires on the
pylons. Your mast will attain the same voltage as the
voltage in the field at the top of your mast.

Normally it will be OK as the boat will insulate the mast
from the ground (unless it's a metal boat!) and no
current will flow. BUT, when you touch it, especially
standing on the ground with (salty!!) wet feet, you
complete the circuit and current goes through you and the
mast.

I don't think earthing the mast is a great idea - there
might always be a (tiny) current flowing and, more to the
point, it will turn the mast into a lightening conductor
too.

Whatever your problem, it would be worse with an
aluminium mast, they conduct much better.

But don't worry about the mast, worry about you! Chances
are, the current is very small, cause as soon as you
touch the mast the voltage will collapse. But if it
hurts, it's not good.

Get a new parking space!!!
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