Electrical Question 12 v Battery and fish finder?
What size of a fuse is required when hooking my fish finder to my boat battery. Deep cycle battery. I,m thinking 2 amp fuse but I,m not 100% sure. Thanking you in advance for your answer’s
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December 16th, 2009 at 5:41 am
2 amps is probably sufficient and safe, unless your display uses a lot of lights, and the transmitter is very strong. The power requirements are normally listed on the back of the display housing, and indicate the size fuse required. 2 amps really isn’t much power, may have to use a 5 amp to prevent blowing the fuse under normal conditions. The unit will always draw what it wants from the battery, the fuse only sets the maximum current limit, it does not in any way force more power into the unit.