There are ABYC approved boxes with vents? Never knew! Joel
On Wed, Jan 25, 2017 at 10:07 PM, Frederick G Street via CnC-List < cnc-list@cnc-list.com> wrote: > ABYC doesn’t get any more specific than the verbiage below. The amount of > out-gassing is usually pretty small, unless your charger is overcharging > the batteries; but hydrogen sulfide gas can be corrosive, so I’d tend to > keep it away from the diesel if you can. The vents on the tops of the > ABYC/Coast Guard-approved Blue Sea battery boxes are pretty small; it > doesn’t take much. > > — Fred > > Fred Street -- Minneapolis > S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^( > > On Jan 25, 2017, at 8:07 PM, Paul Hood via CnC-List <cnc-list@cnc-list.com> > wrote: > > "Venting in battery compartment to release hydrogen". I have 3 batteries > under the aft berth port side but no vent. How necessary is this and would > a vent to the engine compartment be otherwise sufficient? > > Paul Hood > '81 C&C34 'Refuge' > Georgian Bay > > _________________ > Date: Wed, 25 Jan 2017 19:45:31 -0600 > From: Frederick G Street <f...@postaudio.net> > To: cnc-list@cnc-list.com > Subject: Re: Stus-List 35 MK I battery locations > Message-ID: <51ed7387-01ca-419d-9c57-008eb705d...@postaudio.net> > Content-Type: text/plain; charset="utf-8" > > Here are most of the requirements: > > ABYC Standard E-10.6. Storage Batteries - Installation > > Batteries shall be secured against shifting. > > Each installed battery shall not move more than one (1) inch in any > direction when a pulling force of ninety (90) pounds > > or twice the battery weight, whichever is less, is applied through the > > center of gravity of the battery as follows: > > > (1) Vertically for a duration of one (1) minute > > (2) Horizontally and parallel to the boat?s center line for a duration of > > one (1) minute fore and one (1) minute aft. > > > (3) Horizontally and perpendicular to the boat?s center line for a > duration of one (1) minute to starboard and one (1) > > minute to port. > > To prevent accidental contact of the ungrounded battery terminal to > > ground, each battery shall be protected so that metallic objects cannot > come > into contact with the ungrounded battery terminal. This may be accomplished > by means such as: > > > (1) Covering the ungrounded battery terminal with a boot or > nonconductive shield, > > (2) Installing the battery in a covered battery box, or > > (3) Installing the battery in a compartment specially designed only for > > the battery(ies). > > > Each metallic fuel line and fuel system component within twelve (12) > > inches and above the horizontal plane of the battery top surface as > installed shall be shielded with dielectric material to protect against > accidental short-circuiting. > > > NOTES: 1. Terminal insulation or battery covers do not comply with this > > requirement since during installation or removal of a battery, these > protective devices are usually removed in order to connect the cables. > > > 2. Any nonconductive material maybe used for shielding as long as it is > > durable enough to withstand accidental contact by a tool or the battery > terminals during servicing, installation or removal. > > > Each battery shall not be installed directly above or below a fuel tank, > > fuel filter, or fitting in a fuel line. > > > NOTE: This does not prohibit a battery from being installed directly above > > or below an uninterrupted fuel line; however, if this fuel line is within > the twelve (12) inch envelope of the top surface of the battery it shall be > shielded dielectrically as required in ABYC E-10.6.d. > > > A vent system or other means shall be provided to permit the discharge > > from the boat of hydrogen gas released by the battery. Battery boxes whose > cover forms a pocket over the battery shall be vented. > > > NOTE: These provisions also apply to installations of sealed batteries. > > If the mounting surface or components of the boat in the immediate > vicinity of the battery location are of a material attacked by > > electrolyte, a mounting means shall be provided that is made of a material > that is not damaged by electrolyte. > > > Fasteners for the attachment of battery boxes or trays shall be isolated > > from areas intended to collect spilled electrolyte. > > > > > I don?t see it here, but the box also needs to be able to contain all of > the > electrolyte contained in the batteries housed in the box, if the cases > crack. > > ? Fred > > Fred Street -- Minneapolis > S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^( > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > > -- Joel 301 541 8551
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
