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ContinuousWave: Small Boat Electrical
Boat Electrical Lecture Series
|Author||Topic: Boat Electrical Lecture Series|
posted 01-17-2013 11:11 AM ET (US)
A series of three lectures on boat electrical topics is available on recorded presentations. The first lecture discusses the lead-acid battery and its three common types: flooded cell, gel cell, and AGM. This lecture also discusses an engine starting battery compared to deep-cycle house battery, battery physical size and storage capacity, and battery energy rating.
The second lecture discusses electrical cables and making crimp connections.
The third lecture discusses boat electrical wiring, different wire types, and wire ratings. It also discusses basic electrical concepts of voltage and current, and presents Ohm's law. Selection of wire gauge using pre-computed tables is also shown.
The three lectures require about a half-hour to view. These may be useful for someone who prefers to learn in a lecture style. The lectures also present many items being discussed so that they can be seen, including cutaway examples, particularly with the lead-acid storage batteries.
posted 01-20-2013 09:06 AM ET (US)
This was good, basic, information on batteries and electricity. [The lecturer] talks about the ability to mount AGM batteries in any position, even upside down. Even though I am sure he is right, it is hard to break the feeling that batteries should be right-side up. I did not realize I should use yellow for negative in a 12-Volt circuit. I don't have any boats with shore power circuits but good to know anyway. Thanks for sharing these links
posted 05-16-2013 04:16 PM ET (US)
The fourth lecture in this series has been published. You can watch it on
The lecture covers wire end terminal connectors. The lecturer makes specific mention of wire nuts. He says: "In the marine environment wire nuts have no use at all. The American Boat and Yacht Council and the U.S. Coast Guard actually prohibit the use of wire nuts."
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