Cross Reference that fuse size to verify that it’s below the Maximum fuse size called out by this chart. As you can see, 5 amps is well within the 52.5 maximum fuse size threshold.
See full version: How-to Size Fuses in a DIY Camper Van Electrical System
Cross Reference that fuse size to verify that it’s below the Maximum fuse size called out by this chart. As you can see, 5 amps is well within the 52.5 maximum fuse size threshold.
Now that we know how big of wire we are going to use, we need to determine how big of a fuse we need. here
Now, double check that the 125A fuse requested by the fuse block in within the safe threshold for 1ga wire: [links]
And there you go! There are a lot of steps to this and trust me, you’ll get faster at it with practice. As always leave any questions you have in the comments below and subscribe for updates.
Oh, lookie there, Blue Sea tells us in the instructions how big of a fuse to use. [links]
Find the size of fuse by multiplying the amps required by the device (2) by 1.5.
If I’ve missed anything or left anything out, please correct me through PM, and I will correct the tables.
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Most people get caught up on fuse wire size but once you get the hang of it, it shouldn’t cause too many headaches. This is an in-depth fuse tutorial explaining everything you need to know about fuses and how to size a fuse. We’ll go into all the relevant details and what it all means so you’ll go from novice to pro in no time at all.
One common misconception about choosing the correct fuse size is that it’s dependent on the load of the circuit. Actually, the load of the circuit should have nothing to do with choosing a fuse size. The fuse size should be based on the SMALLEST wire (largest gage number) in the circuit.
For those of you who want to get right down to business, let’s not waste any more time, here’s how you’d go about calculating fuse size correctly in 3 simple steps:
Say you bought a cold cathode kit for each side of the dash (2 Transformers), 5 superflux LED’s for your vents, and a 4.7″ Flexible LED strip for your center console.
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The main function of a fuse is to protect your wiring, but in order to do so, you’ll have to get the right fuse wire size from the start, too low and it’ll blow, too high and you’ll end up doing damage to the whole circuit!
I did post the question by itself on the forum.
Re: What rating for the Fuse is needed for the accessory 12v [links]
Re: What rating for the Fuse is needed for the accessory 12v more
If you intend on running one appliance on this individual circuit, working out the total current draw should be relatively easy. more
Its worth remembering that a fuse should be the weakest point in your electrical circuit. This is because you want your fuse to blow before any damage can occur to the other parts/devices of the circuit. [links]
If you install a wire that is too small, it is likely to result in it becoming hot and potentially catching fire.
For positive power, is it generally accepted to use a wire with red insulation, and for negative, you would use black.