Battery switches should be ignition proof, and approved by UL, ABYC, and others. You should not have to worry about a hydrogen explosion, but if you are still concerned, make sure that the locker is well vented, perhaps both at the top and the bottom. Hydrogen, being lighter than air will vent at the top, but the lower vent will facilitate the air flow.
On my boat, a 27 year old C&C 41, CB, I have 3 batteries installed in the lower part of a hanging locker. The battery switch is located near the middle of the same locker. It does have a separate cover over the terminals, just to prevent any metal objects from shorting to the terminals, but this cover is by no means gas tight. Never had a problem. Just my .02 $ Don Wagner C&C 41 CB Der Baron Hull # 93 1986 ----- Original Message ----- From: Richard H. Bernstein To: cnc-list@cnc-list.com Sent: Saturday, April 27, 2013 4:38 PM Subject: Stus-List third battery We are planning to install a refrigeration unit, hence the need for more juice. But, the question is--where did you find space for the extra battery? There's a space forward of the locker under the quarter birth--right under the seat for the nav table. But that's where the battery selector switch is, and I thought it is not advisable to put a battery to close to a potential source of spark because of the possibility of hydrogen gas. I'm probably going to use part of that space for the charger, also. Richard Bernstein LUNA 1984 C&C 35 Lake Champlain, Vermont One my 35 MKII, I made room for two 6 volt golf cart batteries (house supply) and 1 group 24 deep cycle battery that I use as a starting battery. All told with those 3, I should have somewhere around 300 amp hours of power, using the house bank first of course and then I need to do a motor cruise to get things back up. I run an adler barbour refrigeration unit and I have pressurized hot and cold and regular incandescent 12 V lighting, stereo and electric marine toilet, so far so good for me.next is an anchor windlass which will take a lot of instantaneous power but I intend to install a battery forward with charging from the engine alternator to do that.less low gage conductor wire required that way I think, but I am sure Rich will set me right on that Not sure if you have the space, the 6V cart batteries I got are rather tall Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS _____ From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Richard H. Bernstein Sent: April 27, 2013 4:42 PM To: cnc-list@cnc-list.com Subject: Stus-List third battery I would like to install a third battery on Luna to give more power on the house side. I am curious where others with C&C 35's have put it. There doesn't seem to be room for another under the starboard quarter berth where the others are. Any advice?? Richard Bernstein LUNA 1984 C&C 35 Lake Champlain, Vermont Richard Bernstein LUNA 1984 C&C 35 Lake Champlain, Vermont ------------------------------------------------------------------------------ _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
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