Instrument and Panel Back Lighting - Page 2 - SailNet Community
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post #11 of 16 Old 05-27-2011
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Just a quick cautionary note:

Whatever size fuse you use, make sure the wire size you use can handle the current.

My own rule of thumb is to have the wire sized to handle 180% of the fuse rating.

In short, donít use 22 ga. wire with a 10 amp fuse, the wire will smoke long before the fuse pops.

Here's a sizing chart:
American Wire Gauge table and AWG Electrical Current Load Limits with skin depth frequencies
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post #12 of 16 Old 05-27-2011 Thread Starter
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I'm looking at more like a 1A fuse on 16 AWG, so the fuse is way less than the wire itself. These back panel LEDs have a tiny draw.

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post #13 of 16 Old 05-27-2011
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I have my Blue Seas panel backlight on a separate switch in one of the extra breaker positions. I have it supplied by the DC master on the panel with a 1A fuse. I do not find the light put out to be that much. Especially after sailing all day when I am beat. I just like to be able to turn things independently.
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post #14 of 16 Old 05-27-2011
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Tweegs

The smallest wire on a boat should be 16 awg.

Chris

The panel lighting is powered by the red and yellow wires on the Blue Seas panels. The yellow is ground. Run the red wire, which is 16 awg, to a switch like a Blue Seas toggle (4150) and back to the positive bus on the panel. The run should only be a few inches if the switch is beside or above the panel and doesn't require a fuse in my opinion. As shipped the panel lighting on Blue Seas panels is not fused.

Brian
Living aboard in Victoria Harbour
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post #15 of 16 Old 05-28-2011
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I put in a 1 amp a series circuit breaker in the top position of my DC panel to control the back lights...seen in the upper right position here (subsequently I managed to break the toggle off that particular breaker and it turns out Blue Sea no longer sells a 1 amp, so replaced it with a Paneltronics).

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post #16 of 16 Old 05-28-2011
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That is a good option if you have a breaker position to spare. I don't believe Chris does.

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