Installing underground conduit on tidal beach

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paul said:
By the NEC you are correct, however the Washington Administrative Code includes this situation.

WAC 296-46B-555

Special occupancies ? Marinas and boatyards.
(1) For the purposes of NEC 555.1, the scope of work includes private, noncommercial docking facilities.

(2) For the purposes of NEC 555.5, transformer terminations must be located a minimum of twelve inches above the deck of a dock (datum plane requirements do not apply for this section).

(3) For the purposes of NEC 555.7, adjacent means within sight.

(4) For the purposes of NEC 555.9, all electrical connections must be installed a minimum of twelve inches above the deck of a pier unless the connections are approved for wet locations (datum plane requirements do not apply for this section).

(5) For the purposes of NEC 555.10, all enclosures must be corrosion resistant. All gasketed enclosures must be arranged with a weep hole to discharge condensation.

(6) For the purposes of NEC 555.11, gasketed enclosures are only required for wet locations.

(7) For the purposes of NEC 555.13, the following wiring methods are allowed:

(a) All wiring installed in a damp or wet location must be suitable for wet locations.

(b) Extra-hard usage portable power cables rated not less than 75?C, 600 volts, listed for wet locations and sunlight resistance and having an outer jacket rated for the environment are permitted. Portable power cables are permitted as a permanent wiring method under or within docks and piers or where provided with physical protection. The requirements of NEC 555.13 (B)(4)(b) do not apply.

(c) Overhead wiring must be installed at the perimeter of areas where boats are moored, stored, moved, or serviced to avoid possible contact with masts and other parts of boats.

(d) For the purposes of NEC 555.13 (B)(5), the wiring methods of Chapter 3 NEC will be permitted.

(8) For the purposes of NEC 555.19, receptacles must be mounted not less than twelve inches above the deck surface of the pier or dock (datum plane requirements do not apply for this section). Shore power receptacles that provide shore power for boats must be rated not less than 20 amperes and must be single outlet type and must be of the locking and grounding type or pin and sleeve type.

(9) For the purposes of NEC 555.21 (B)(1), delete exception No. 1 and No. 2 and replace with:

Dock, pier, or wharf sections that do not support fuel dispensers and may abut a section(s) that supports a fuel dispenser(s) are permitted to be unclassified where documented air space between the sections is provided and where flammable liquids or vapors cannot travel to these sections. See NEC 500.4(A) for documentation requirements.
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Thanks Paul. I'm familiar with WAC rules as well, and I still can't find anything about beaches. I'll keep y'all posted.
 
buzzbar said:
Thanks Paul. I'm familiar with WAC rules as well, and I still can't find anything about beaches. I'll keep y'all posted.
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I gave up 555 as a WAG but it apears to be referenced, I can say that I have benefitted from the post. If we all new everything we would not need this forum.
 
I live near the coast and residential/industry does this all the time in/on the Gulf of Mexico,it's bays,bayous adjoining river properties,establishments etc.............

I guess I missed what the problem is thought to be and I'm not being demeaning in any manner unless it is to myself.

dick
 
For those that are interested, I talked to my AHJ this morning, and he said there is nothing in the NEC or WAC rules that would prevent me from running a PVC conduit in a trench on a beach. He DID say that the Corp of Engineers might have a problem with it though. They don't like it when the beach is disrupted.

Thanks to all that have helped. I appreciate it.

Andrew
 
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