ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
sparky 5
Recent Posts
Permit Snafus...AHJs and Contractors Jump in
by sparky. 04/29/17 05:59 PM
201 volt equipment?
by bigpapa. 04/29/17 12:15 AM
Schneider LC1D09
by jraef. 04/28/17 11:05 PM
Electrode boilers question
by annemarie1. 04/27/17 01:40 PM
Why cables look like they do
by LongRunner. 04/26/17 09:36 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,961 Are you busy
169,792 Re: Forum
163,008 Need opinion
Who's Online Now
0 registered members (), 51 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#99703 - 08/31/06 01:02 AM disconnecting means for Shore receptacles for ships  
ih17dka8  Offline
Junior Member
Joined: Jan 2006
Posts: 8
Seoul, South Korea
Could push button connected to shunt trip coils be the disconnecting means for shore receptacles per NEC 555.17(B)? That's kind of remote contact to trip the circuit breaker for shore receptacles(500A).

------------------------------------------
NEC 555.17(B)Location. The disconnecting means shall be readily accessible, located not more than 762 mm (30 in.) from the receptacle it controls...


2017 / 2014 NEC & Related Books and Study Guides

#99704 - 08/31/06 12:11 PM Re: disconnecting means for Shore receptacles for ships  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,069
Estero,Fl,usa
I believe the intent is that the user will be able to connect the shore tie cable without power being applied and then turn it on. How would you turn the shunt trip breaker back on ?


Greg Fretwell

#99705 - 08/31/06 01:36 PM Re: disconnecting means for Shore receptacles for ships  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,069
Estero,Fl,usa
I just went to several sources for the recomended procedures for checking shore ties and they all concur that you must turn off the power at the shore post and the breakers in the boat before you plug in the cable. Then you turn on the shore power, verify the polarity indicators in the boat read OK then turn on the boat breakers.
You could not use a shunt trip for the post and follow this procedure without taking a long walk to a location you may not be aware of. That would encourage people to handle a hot cable in a wet environment. Bad idea.


Greg Fretwell

#99706 - 09/02/06 04:05 PM Re: disconnecting means for Shore receptacles for ships  
mhulbert  Offline
Member
Joined: Oct 2004
Posts: 132
Anaheim, CA USA
What about a motor operated breaker with a remote open/close selctor switch, and indicator lights and/or meters to verify zero volts? What type of connectors are you using at 500A? Cam Lock?

Motor operated is expensive, but it might be cheaper than an extra 600A disconnect.


#99707 - 09/03/06 02:21 PM Re: disconnecting means for Shore receptacles for ships  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,069
Estero,Fl,usa
I agree that would meet the intent of the code.


Greg Fretwell


Member Spotlight
renosteinke
renosteinke
Blue Collar Country
Posts: 5,316
Joined: January 2005
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.012s Queries: 14 (0.002s) Memory: 0.7687 MB (Peak: 0.9093 MB) Zlib enabled. Server Time: 2017-04-30 03:07:52 UTC