The main AC breaker on my Mk II is labeled "30 Amp Dual."
So, my question is, "dual" what?
(From the outside the breaker *looks* like it is single pole (only one rocker), but I haven't yet cracked it open to double-check)
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David
s/v Portmanteau
Hull #2133 -- 2003 MKII
Seattle, WA
It just means that it breaks both the hot and neutral in a fault..... Under ABYC your main breaker is required to break both hot (black) and neutral (white) whith a fault...
-Maine Sail
https://www.marinehowto.com/
Ok, follow-up: if it breaks both the hot and the neutral, then it's a two-pole breaker, right? But unlike every other two-pole breaker I've ever seen, it only has one toggle.
If it is a single-toggle, two-pole breaker, where can I find a replacement? Nobody at the local chandlerly seems to have heard of such a thing.
David
s/v Portmanteau
Hull #2133 -- 2003 MKII
Seattle, WA
[B][URL="http://www.pacergroup.net/ItemForm.aspx?Item=EG66-1-30BK"]Single toggle 30A double pole breaker[/URL][/B]
-Maine Sail
https://www.marinehowto.com/
How critical is full distribution panel for the 2nd shore power connection, especially if I only want to wire my outlets?
I'm thinking:
Shore power --> galvanic isolator (ground only) --> 30 AMP dual-pole master approx. 1 foot from the shore inlet w/ELCI (e.g. [url]http://bluesea.com/products/8100[/url]) --> 25 amp breaker in the cabin --> all (or a subset of) AC outlets.
The 25-amp breaker at the panel will mean that the load on the outlets maxes out at 84% of rated capacity for the shore power cable.
If I were to do this configuration, would the 25-amp breaker need to be dual pole as well, or is the dual-pole breaker at the inlet sufficient?
If this works, could I physically mount the 25-amp breaker on the existing distribution panel? This would be good because I'm running out of space around the nav station...
David
s/v Portmanteau
Hull #2133 -- 2003 MKII
Seattle, WA
David,
One problem with your latest design is that most 120V outlets, and the wiring leading up to them, are designed for 15A, and not 25A. If you have a new line coming in from the dock to a 30A breaker, you should really have a pair of 15A breakers after it, feeding the outlets, and not a 25A.
Tom Sokoloski
C36/375IA Past Commodore
Noank, CT
[QUOTE=TomSoko;15548]David,
One problem with your latest design is that most 120V outlets, and the wiring leading up to them, are designed for 15A, and not 25A. If you have a new line coming in from the dock to a 30A breaker, you should really have a pair of 15A breakers after it, feeding the outlets, and not a 25A.[/QUOTE]
Got it. So I could remedy the problem with two 15A breakers (say, port and starboard) rather than one 30 amp breaker, but at the same time be pretty cognizant
The question still is can I wire one 30A breaker near the inlet and then use two 15A breakers at the panel, without a second master breaker at the panel for my 2nd connection?
David
s/v Portmanteau
Hull #2133 -- 2003 MKII
Seattle, WA
[QUOTE=FlyMeAway;15547]How critical is full distribution panel for the 2nd shore power connection, especially if I only want to wire my outlets?
I'm thinking:
Shore power --> galvanic isolator (ground only) --> 30 AMP dual-pole master approx. 1 foot from the shore inlet w/ELCI (e.g. [url]http://bluesea.com/products/8100[/url]) --> 25 amp breaker in the cabin --> all (or a subset of) AC outlets.
The 25-amp breaker at the panel will mean that the load on the outlets maxes out at 84% of rated capacity for the shore power cable.
If I were to do this configuration, would the 25-amp breaker need to be dual pole as well, or is the dual-pole breaker at the inlet sufficient?
If this works, could I physically mount the 25-amp breaker on the existing distribution panel? This would be good because I'm running out of space around the nav station...[/QUOTE]
Outlets are ether 15A rated or 20A rated. 15A rated outlets get 14GA wire and 20A rated outlets get 12GA. If you have 15A outlets &14GA wire you should not size the breaker beyond 15A. It is not kosher to share the same AC dist panel for two separate AC feeds..
This is a very simple AC panel..
[B][URL="http://bluesea.com/category/106/87/products/8029"]Blue Sea 8029[/URL][/B]
-Maine Sail
https://www.marinehowto.com/
[QUOTE=Maine Sail;15550]Outlets are ether 15A rated or 20A rated. 15A rated outlets get 14GA wire and 20A rated outlets get 12GA. If you have 15A outlets &14GA wire you should not size the breaker beyond 15A. It is not kosher to share the same AC dist panel for two separate AC feeds..
This is a very simple AC panel..
[B][URL="http://bluesea.com/category/106/87/products/8029"]Blue Sea 8029[/URL][/B][/QUOTE]
Yeah I've seen that panel -- it would only add an effective 15A to the boat, though, right? I'd need two separate circuits at 15A each to get to the full 30A.
Do I need the 30A breaker at the distribution panel or can I wire a 30A breaker near the inlet and then run that to two 15A breakers in the salon?
My outlets are 15A rated.
David
s/v Portmanteau
Hull #2133 -- 2003 MKII
Seattle, WA