

NOTE: With a 2 GA wire and a heavy duty power lug the H& H dies and pink color code are selected. The chart shows that you pick the lug with BLACK markings and adjust the dies to E and A. Lets look at the settings for the 1/0 Heavy Duty Power Lug that youll see crimped later in this article. To guide you on this aspect, you can refer to the battery size section of this article above. It means, the larger your boat is and the larger its electrical load it has, the larger size of power cell it needs to keep up with its demand. We mentioned earlier that size of battery you are going to purchase would have to depend on how much power your boat needs. To be able to select the right battery for your boat and your needs, you also have to make sure that you determine the right size of battery you need. Information was referenced from: ABYC E-11: AC & DC Electrical Systems on Boats.I recommend getting yourself a clamp meter that measures DC current! This will help verify whats actually going through your cables! The most popular and reasonably priced clamp meter is this one Consider The Size Of The Power Cell You Are Going To Purchase Any exposed metal of the wire is a point where moisture can travel along the wire and get into the electronic components at the end of the wire. In the Marine industry, you MUST use adhesive lined butt connectors to prevent moisture from ruining the connection.Avoid making right angle turns on sharp edges as this will eventually cut through the wire insulation, use grommets where necessary.Audio system and lighting system incoming power should not share the same terminal blocks to help prevent a buzz sound on the speakers.Use a common ground near the battery and DO NOT connect into a long shared ground line that boats sometimes have, otherwise this can add noise to speaker systems.

This helps avoid picking up noise in your audio system. Do not run in parallel in the same bundle or conduit as low voltage signal cables such as audio input wires.A good rule of thumb is to use the next heavier gauge when possible. This changes the current drawn by the lights and can sometimes require selecting a larger wire size. A boats battery doesn’t always produce 12V, and can run as low as 10V under certain operating conditions, or up to 14V when charging.ABYC requires minimum of 16AWG on most single conductor wire runs (so even if the table or calculator says 18AWG, you should use 16AWG if running a single wire).ABYC Wire Sizer App (Available on Apple Store and Google Play).An Online Calculator (we recommend this one Link Here).Wire gauge table charts below (select the table for your system voltage).Your voltage drop requirement (Lumitec always recommends using 3%) - Voltage drop is the change in voltage along the wire due to resistance in the wire.ĭetermine the correct wire gauge by using one of several tools:.Distance of wire run (from the power source to the light AND BACK).If powering multiple lights add up the current draw per light rated for your system voltage. This will depend on system voltage, (Lumitec light current draw information for 12vDC and 24vDC is found on the light product pages on this website). The total current draw of the number of lights you are planning to power on the circuit.Your vessel’s system voltage, this is typically (12V or 24V).The higher the AWG number, the smaller the wire diameter.Typically, an installer will select the smallest wire they can for their application to save on material cost. In the U.S., wires are sized by the AWG (American Wire Gauge) system. (Distance from Battery to Light x 2 = Total Wire Run)
