Hi semicolonsutra (?)
The American Boat & Yacht Council, ABYC, was created in 1954 as a non-profit organization to develop safety standards for the design, construction, equipage, repair and maintenance of boats. The mission of ABYC is to improve boating safety and reduce the number of injuries and fatalities.
ABYC E-11, AC and DC Electrical Systems on Boats, is limited to the design, construction and installation of direct current systems that operate at a potential of 50V or less and alternating current electrical systems operating at frequencies of 50 or 60 Hz and less than 300 V ("extra low voltage").
In 2009, they published TE-30 - Electric Propulsion Systems. This Technical Information Report is a compilation of the key safety requirements of commonly used national and international standards related to voltages and frequencies in excess of those covered by E-11, as well as recommendations for the design, construction, and installation of electrical systems and components used in high voltage electric propulsion systems.
This technical information report addresses AC and DC electrical systems used on boat's alternating current (AC) systems operating at more than 300 VAC, but less than 1000 VAC, and direct current (DC) systems operating at more than 50 VDC but less than 1000 VDC, including battery banks, motors, and controllers for the purpose of propulsion.
Even if your boat is operating at 48V nominal, like many of the converted sailing auxiliaries in this group including mine, following the guidelines listed in TE-30 just makes sense.
Do search of this Yahoo group for "TE-30" and you will find a number of threads since 2009 discussing safe grounding, including your specific question.
Members have made more than 24,000 posts about electric boats (usually) over the last 14 years. This is a great resource if you choose to use it. If you read up on the previous discussions and still have questions, come back here and ask for clarification.
Fair winds,
Eric
1964 Bermuda 30 ketch, 5.5kW Propulsion Marine drive, 8kWh lithium batteries
Marina del Rey, CA
--- In electricboats@yahoogroups.com, semicolonsutra <no_reply@...> wrote:
>
> Can anyone give me pointers on how to properly ground my DC electric system on my electric powered boat? Previously the negative ground wire went to a Perkins engine and now I have a ME0913 from Thunderstruck and not really sure or competent as of yet as to how to properly ground it or if this indeed is possible. Any tips or references, or pictures would be appreciated.
>
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