When we bought her, she did not have a genset, she did not have an inverter-charger, and she was fit with two inappropriate battery banks. This diagram shows Sanctuary as she is today. Sanctuary’s energy flow diagram is shown in Figure 1. A simple block diagram of a boat electrical platform can show the relationships among the various components of the boat’s AC (and DC) electrical systems. Viewing the shore power AC system of a boat as a residential sub-panel in a single family residence is simple and technically accurate, but the AC electrical system of a typical cruising boat is more than just shore power. CONTINUE CPR UNTIL THE VICTIM REVIVES, UNTIL EMS ARRIVES TO RELIEVE YOU, OR UNTIL YOU ARE PHYSICALLY UNABLE TO CONTINUE!.CPR is often successful in reviving or saving electrocution victims who are otherwise healthy at the time of the accident. After power is removed, and with access to the victim, assess victim and initiate CPR as appropriate.After power is removed and the victim’s airway is secured above water, if help has not arrived, call 911 again! Two 911 calls are better than none.After power is removed, raise the face of an unconscious victim out of the water.If the victim is in the water, KILL POWER TO THE ENTIRE DOCK.REMOVE THE POWER SOURCE FROM THE VICTIM BY DISCONNECTING THE ELECTRIC POWER at the pedestal.SCREAM FOR HELP! ATTRACT ATTENTION! Point at the first person who’s attention you get and instruct them to “call 911 for an electrocution!”.Avoid becoming a victim yourself! DO NOT TOUCH THE VICTIM, METAL MACHINERY OR NEARBY METAL OBJECTS IF POWER IS STILL PRESENT!.STAY CALM! You can not save someone else if you panic!.Remember, since the victim is not breathing, you’ll have 5 minutes or less to accomplish items 3 – 10, below: If you are present and witness an electric shock or electrocution, in any locale around boats or water, there are several things that need to be done immediately. Obviously, electric shock can be a life threatening emergency. Even very small electric currents, under the right circumstances, can result in electrocution. Well, then, LEAVE IT ALONE until you learn more! ElectrocutionĮlectrocution is a biological insult arising from an electric shock that paralyzes either the respiratory or cardiac functions of the body, or both.
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If you are not sure you know how to use the tools you do have… If you are not sure you have the right tools for a job… If you are not comfortable with electrical safety procedures… If you are not sure of what you’re doing… The large batteries found on boats can produce explosive gasses and store enough energy to start a large, damaging fire.ĪLWAYS WEAR SAFETY GLASSES while working around electricity! Anyone working in noisy environments, with running engines or other loud machinery, MUST WEAR HEARING PROTECTION. This is especially true of inverter-chargers.
Even de-energized electrical circuits can retain enough stored energy to create a life-threatening hazard. Virtually all electricity can be dangerous to property and life.
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The goal of this article is to help readers understand AC electrical concepts and topics to be able to discuss questions, concerns, symptoms and options with marine-certified, professional electrical technicians. This introductory Part 2 article will answer some questions, and will undoubtedly raise others.
On boats, shore power is only one component of a typical AC system “platform,” which can also include a mix of onboard generator(s), inverter(s) and in some cases, shore power transformer(s).
This article focuses on the overall AC electric “platform” aboard cruising boats. In the same way, boats are subordinate to the shore power AC electrical infrastructure of a terrestrial facility. In the NEC architecture of terrestrial AC building systems, sub-panels are subordinate to the main service entrance panel of the building. The Part 1 article concluded by showing that the AC shore power system on boats is equivalent to a sub-panel in a terrestrial building. The shore power system is the “host system,” and boats attach as “appliances.” An understanding of residential AC power systems is foundational to an understanding of AC power systems on boats. The AC Electricity Fundamentals – Part 1 article precedes this article and discusses 1) the concepts, terminology, components and layout of National Power Grid generating equipment, 2) delivery of AC power into residential neighborhoods, and 3) the configuration of AC electrical systems within a residential building, all at an introductory level. Boats attach to marina shore power systems. Added content: Shore Power Transformers July 22, 2019Īdded content: DC Electric Circuit “Wire” Naming and Identification Octo
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