Grounding conductor metal ship's hull
- Thread starter bobe11
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frizbeedog
Senior Member
- Location
- Oregon
The NEC does not cover installations in ships.
90.2 (B)(1)
2008
Someone here may know.
90.2 (B)(1)
2008
Someone here may know.
Last edited:
cadpoint
Senior Member
- Location
- Durham, NC
The American Bureau of Shipping, the ABS and the US Coast Guard, run the rules of the the Road for US flags ship.
Now people sumbit there drawings and details (world wide) to the ABS similar to UL (in the Broad sense) to over-see and QA the design for insurance coverage and the award of letters, that attest to its worthness, etc...
Now the US flag ship (non military) has to go through both the Coast Guard to assure Life safety sytems, personal, etc. and relay on the ABS to pick up the the heavy technical side with Big ship, and it goes by Tonnage of displacement, 200ft plus. Small ships, tug and barges are more of the Coast guards flip to the Heavy Technical side.
Sometimes they combine as to the nature of the ship might get both heavily involved.
www.eagle.org ABS
www.uscg.mil USCG
http://www.google.com/search?hl=en&q=electrical+grounding+a+ship&start=10&sa=N
Note: the first is of Canada's desire to bond everything on a ship w/ exceptions, the second is the electrical talk by the IEEE on the navy's Electric Gun...
Now people sumbit there drawings and details (world wide) to the ABS similar to UL (in the Broad sense) to over-see and QA the design for insurance coverage and the award of letters, that attest to its worthness, etc...
Now the US flag ship (non military) has to go through both the Coast Guard to assure Life safety sytems, personal, etc. and relay on the ABS to pick up the the heavy technical side with Big ship, and it goes by Tonnage of displacement, 200ft plus. Small ships, tug and barges are more of the Coast guards flip to the Heavy Technical side.
Sometimes they combine as to the nature of the ship might get both heavily involved.
www.eagle.org ABS
www.uscg.mil USCG
http://www.google.com/search?hl=en&q=electrical+grounding+a+ship&start=10&sa=N
Note: the first is of Canada's desire to bond everything on a ship w/ exceptions, the second is the electrical talk by the IEEE on the navy's Electric Gun...
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weressl
Esteemed Member
bobe11 said:
Could be. If we consider counduit to be an accepted reliable path, what argument could there be for a contigous metallic structure?
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
I can't imagine a better EGC than such a metal body. Cars and trucks have been using the chassis and/or body as a circuit conductor for decades with no problems.bobe11 said:
flashlight
Senior Member
- Location
- NY, NY
- Occupation
- Electrician, semi-retired
I wired a 35 ft. sailboat as a side project some years ago. I had to do a large amount of reading to get up to speed on it, not sure how much I retain.
But I do remember that it is very bad practice to allow metal parts of the boat serve as a path for any kind of voltage. Stray voltage on boats, and concommitantly in marinas, is a huge problem. Besides shock hazards, it results in premature and often startlingly fast corrosion of metal parts, as an anode/cathode situation is set up, as in a battery.
(Edit--this being said, I was working on a fiberglass boat, not sure how you would avoid it on a metal hull)
(Also, if you think some topics or practices are controversial on this forum, you should study boat wiring a little bit ! Some things which you would think would be basic practice don't seem to be agreed upon at all (such as whether to bond or isolate metal through-hull parts on a fiberglass boat, or the protocol for lightning protection.)
There is a set of standards put out by the American Boat and Yacht Council
(ABYC), not sure of the universality of its acceptance.
But I do remember that it is very bad practice to allow metal parts of the boat serve as a path for any kind of voltage. Stray voltage on boats, and concommitantly in marinas, is a huge problem. Besides shock hazards, it results in premature and often startlingly fast corrosion of metal parts, as an anode/cathode situation is set up, as in a battery.
(Edit--this being said, I was working on a fiberglass boat, not sure how you would avoid it on a metal hull)
(Also, if you think some topics or practices are controversial on this forum, you should study boat wiring a little bit ! Some things which you would think would be basic practice don't seem to be agreed upon at all (such as whether to bond or isolate metal through-hull parts on a fiberglass boat, or the protocol for lightning protection.)
There is a set of standards put out by the American Boat and Yacht Council
(ABYC), not sure of the universality of its acceptance.
Last edited:
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