Articles: All Categories

Page 1 of 2    Total Results: 16

Pros and Cons of a Traditional Isolation Transformer

A marine isolation transformer is a versatile device that can be used to provide galvanic isolation from shore power systems, to enhance electrical safety and eliminate corrosion caused by stray currents. Some isolation transformers can also be used for raising the shore voltage to deal with voltage drop. Another common use is to adapt the vessel’s internal power system voltage to a higher or lower shore power supply. If isolation transformers are so useful why is every boat not equipped with one?

Voltage Drop in Primary Distribution

Most marine electrical systems will have a DC (direct current) system as part of their electrical design, and for most boats it may form the largest and most intrinsic part of the electrical system. With lower voltage electrical systems, those below 50V, it is of paramount importance that particular attention is paid to distribution of the power and maintaining voltage drop to a minimum.

Battery Voltage vs Battery Capacity

The best way to determine remaining battery capacity is by using a self-learning battery monitor with a percentage state of charge function (SOC). However, not every boat is equipped with that type of device nor does every boat owner have such a device in their budget. If the only means of estimating remaining battery capacity is a voltage meter, then a reasonable approximation can be made based on an accurate digital voltage measurement with a battery utilizing lead/acid chemistry.

Battery Capacity vs. Discharge Rate

There are fundamental electrical principles, many based on Ohms law, that are constantly presenting themselves in various situations. The fact that Watts is equivalent to Volt x Current is always at the forefront of most design considerations. When it comes to battery capacity the amount of current being pulled from the bank has an important consequence to the overall capacity.

The Four Stages of Charge

A charge controller or voltage regulator is an important addition to any boat that lacks one. The advantages of the existence of a voltage regulator include: longer life expectancy for the battery banks, faster and...

What is a Charge Controller and the Importance of Having One

A charge controller, charge regulator or battery regulator is a device that limits the rate at which current is added to a battery as the level of charge increases. Its main function is...

Sizing Converters

Having a 24 VDC electrical system aboard a boat has it benefits, such as smaller wire size due the lessen effect of voltage drop. Unfortunately not all loads come in 24 VDC and you will inevitably run into the need to...

Quick Tips To Ensure Your Boat's Batteries Are Healthy and Ready for the Summer

Summer is coming and the marinas are coming to life again. Many of our boats have sat through winter without being turned on, and some of you are finding that all is well, while some are finding that things aren't quite the way you left them. I want to talk about battery conditions and what should be checked and/or monitored all year round.

Cover Up!

From time to time we come across situations that scream danger! One of these situations is when we see AC outlets and AC Switchboards that haven't been covered up from behind, or the backing cover hasn't been put back on after being worked on. AC outlets with no backing cover are very dangerous for many reasons.

Mixing Battery Types in a Single Bank

You have probably heard that it is bad to mix battery types and ages in a single bank, but you may not know why. A simplified answer is that the stronger batteries will always be charging the weaker batteries. This is true, but let's take a closer look at this problem.

Page 1 of 2    Total Results: 16