Behind The HelmImagine a world where multiple touch-screens conveniently located will display information from everywhere on the vessel. Information is gathered from the engine, pumps, tanks, cameras, motors, hydraulics, winches, lights and climate control.

Solar Panel On DodgerIn a previous article, I detailed how we converted our ice box into a fridge/freezer onboard our Catalina 270. I can assure you, it is one of the best modifications we’ve made and truly classifies itself as an upgrade for both convenience and overall enjoyment.

Figure 15Should you have 120VAC devices or appliances (vacuum, expresso maker, induction elements, wired tools) you’d like to run on your vessel when away from the dock you will need an inverter. An inverter takes in DC power and synthesizes 50 or 60Hz AC power at 120 or 220V.

Figure 11When it comes to building sizable house battery banks, you will probably need more than one battery. Combining multiple batteries in series and/or parallel will allow you to construct a larger battery banks.

10 FusesFigure 10 shows many of the fuse types commonly found on a vessel and the ones I use most commonly. (but not a complete list by any means). They differ by physical size, current capacity and AIC.

Terminal OverloadMany wires on a vessel are connected via a bolted lug. ABYC standard E-11 covers normal do and don’ts.

Figure 7 CrimperThe other factor that affects wire size after the “how much current can it handle before burning up” question is, what is the voltage drop across the wire? At 120V if we lose a volt or two along the wire run it’s no big deal. At 12V if we lose a volt or two it’s a very different story.

 

WiringIn Part 1, last issue, you reviewed the fundamentals. Now that you understand some of the basic constructs of electrical work we look at getting down to the exercise of determining what wire too use and how do I connect it?

GFCI and ELCI ProtectionI’m often asked to take a look at a survey to complete repairs at the request of a boat owner’s insurance company. Over the years, I’ve noticed that there are some items that are considered much lower ‘risk’, than others when identified on a survey.

Taped ToolsThis series deals with basic DC boat wiring concepts. From various articles and posts I see, and talking with boating friends, there seems to be mystery for many when it comes to boat electrics. I don’t intend this to be a deep dive but hopefully enough to take away some of the mystery.

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