Circuit Breaker - SailNet Community
 3Likes
Reply
 
LinkBack Thread Tools
post #1 of 16 Old 03-23-2014 Thread Starter
Banned
 
nccouple's Avatar
 
Join Date: Jun 2011
Location: North Carolina
Posts: 325
Thanks: 5
Thanked 9 Times in 9 Posts
Rep Power: 6
 
Circuit Breaker

I'm replacing some wiring and the circuit breaker for my shore power 115 outlets. I found the breaker I need at West Marine but they offer any where from a 5 amp to a 50 amp. Not sure witch one I need. I'm guessing the 30 amp but not sure. I just purchased the boat so I'm unfamiliar with it, also several hours away from it so I cant just go look. Its a Watkins 29 if that helps. Thanks

oursailingadventures.com
nccouple is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 16 Old 03-23-2014
Senior Member
 
Join Date: Oct 2009
Location: Virginia
Posts: 1,407
Thanks: 4
Thanked 30 Times in 29 Posts
Rep Power: 8
 
Re: Circuit Breaker

most likely it's 30 amps, but I'd make sure before doing anything.

Catalina 34
chuck53 is online now  
Quote Quick Reply Share with Facebook
post #3 of 16 Old 03-23-2014
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,761
Thanks: 0
Thanked 109 Times in 100 Posts
Rep Power: 10
   
Re: Circuit Breaker

I doubt it is anything but 30 amps. Make sure it is a double pole breaker that breaks both hot and neutral wires.

Like this: C-Series White Toggle Circuit Breaker - Double Pole 30 Amp - Blue Sea Systems

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #4 of 16 Old 03-24-2014
Senior Member
 
TakeFive's Avatar
 
Join Date: Oct 2009
Location: Swarthmore, PA
Posts: 3,650
Thanks: 12
Thanked 96 Times in 85 Posts
Rep Power: 8
 
Re: Circuit Breaker

You have just one breaker for the whole boat? If so, I would think carefully about allowing all 30 amps to go to AC outlet.

Check the gauge and other specs of the smallest wire in your system. Then do some searching online for what amps it will carry safely. If your outlet is connected with 14 AWG, I would make the breaker 15 amps or less. If you have a panel that splits the current among multiple circuits, you might do 30 amps for the whole boat (master breaker), but then split that into multiple circuits that match the gauge of the wire and rating of the outlets.

I believe that "standard" AC outlets are 15 amp maximum. 20 amp outlets have a "T-shape" hot slot that accommodates the special plugs that 20 amp appliances require.

DISCLAIMER: I am not an electrician. Verify anything I say with a qualified source. (Free Internet advice may be worth less than you pay for it.)
L124C and jraymer like this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2001 Catalina 34MkII Breakin' Away (at Rock Hall Landing Marina)
PO of 1998 Catalina 250WK Take Five (new owners relocated to Baltimore's Inner Harbor)
1991 15' Trophy (Lake Wallenpaupack)
1985 14' Phantom (Lake Wallenpaupack)

Last edited by TakeFive; 03-24-2014 at 12:44 AM.
TakeFive is offline  
Quote Quick Reply Share with Facebook
post #5 of 16 Old 03-24-2014
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,761
Thanks: 0
Thanked 109 Times in 100 Posts
Rep Power: 10
   
Re: Circuit Breaker

A proper shore power panel for 30 amp service has a double pole breaker (30 amp) as a main breaker with other breakers for each circuit, usually 15 amps, each wired with 14 gauge wire. The wire from the shore connection to the panel is 10 gauge wire. The panel includes reverse polarity indicator lights. This is a good example of a proper panel.



Many older boats came with just a single double breaker of 30 amps and that should be corrected so any individual circuit cannot draw more than the current it is rated for, typically 15 amps. I would think any good surveyor would consider this a requirement.
jraymer likes this.

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #6 of 16 Old 03-24-2014 Thread Starter
Banned
 
nccouple's Avatar
 
Join Date: Jun 2011
Location: North Carolina
Posts: 325
Thanks: 5
Thanked 9 Times in 9 Posts
Rep Power: 6
 
Re: Circuit Breaker

Ok I think I was about to screw up. I was getting ready to order the 30 amp. This breaker only controls the 115 shore power outlets. Maybe I should wait till my next trip down and pull it and then order.
Attached Thumbnails
IMG_4246[1].jpg  

oursailingadventures.com
nccouple is offline  
Quote Quick Reply Share with Facebook
post #7 of 16 Old 03-24-2014
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,761
Thanks: 0
Thanked 109 Times in 100 Posts
Rep Power: 10
   
Re: Circuit Breaker

Quote:
Originally Posted by nccouple View Post
Ok I think I was about to screw up. I was getting ready to order the 30 amp. This breaker only controls the 115 shore power outlets. Maybe I should wait till my next trip down and pull it and then order.
For an individual circuit you want a 15 amp breaker. Blue Seas model # 7210 or similar.

A-Series White Toggle Circuit Breaker - Single Pole 15A - Blue Sea Systems

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #8 of 16 Old 03-25-2014
Dirt Free
 
boatpoker's Avatar
 
Join Date: Jul 2008
Location: Toronto
Posts: 1,418
Thanks: 19
Thanked 51 Times in 48 Posts
Rep Power: 9
 
Re: Circuit Breaker

You have two circuit breakers but no 30amp main ????
Is the polarity indicator wired across both circuits ?

Be the man Sharon thinks I am - wg
I can do that
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- wg
Be the master of your own disaster - wg
If you're not laughing, you're not doing it right. - wg
if you can live with the consequences, go for it. - wg
I yam what I yam an' thats all that I yam. - Popeye
boatpoker is online now  
Quote Quick Reply Share with Facebook
post #9 of 16 Old 03-25-2014
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,761
Thanks: 0
Thanked 109 Times in 100 Posts
Rep Power: 10
   
Re: Circuit Breaker

Quote:
Originally Posted by boatpoker View Post
You have two circuit breakers but no 30amp main ????
Is the polarity indicator wired across both circuits ?
I'm assuming the double pole main is above the reverse polarity light. There certainly has to be one.

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #10 of 16 Old 03-25-2014
Dirt Free
 
boatpoker's Avatar
 
Join Date: Jul 2008
Location: Toronto
Posts: 1,418
Thanks: 19
Thanked 51 Times in 48 Posts
Rep Power: 9
 
Re: Circuit Breaker

Quote:
Originally Posted by mitiempo View Post
I'm assuming the double pole main is above the reverse polarity light. There certainly has to be one.
I'd hope so but in my experience I wouldn't bet on it
Attached Thumbnails
AC fuse 3  Fun.jpg  

Be the man Sharon thinks I am - wg
I can do that
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- wg
Be the master of your own disaster - wg
If you're not laughing, you're not doing it right. - wg
if you can live with the consequences, go for it. - wg
I yam what I yam an' thats all that I yam. - Popeye
boatpoker is online now  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Anyone have any feedback on this? - circuit breaker wiring design, relays, dump load Bene505 Electrical Systems 13 04-22-2011 11:45 PM
Need circuit breaker panel inshallamiami Gear & Maintenance 10 03-25-2008 04:13 PM
Circuit Breaker drynoc Gear & Maintenance 8 11-14-2007 10:15 AM
Circuit Breaker Replacement Tom Wood Gear and Maintenance Articles 0 02-05-2002 08:00 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome