What did you do to your Ranger today? (Part Deux!)

[Rick W]

Oh wise (electrical stuff) ones……

Keeping in mind that I’m a pretty smart engineer and I’ve worked with all this stuff for the better part of 60 years, I have what is probably a dumb question. And yeah, yeah, I know there are no dumb questions - just dumb people.

30amp fuses. I don’t have a picture of the even smaller more modern fuses like this that I believe also come in 30 amp.

If I’m going to run a wire from here to there in the truck to power whatever, are these two fuses interchangeable because they’re both 30 A? Or does the big one somehow carry more whatever? My thinking is a 30 amp is a 30 amp is a 30 amp, independent of the physical size, when working in the same 12 V circuit.

I’m looking for the correct overall answer. Specifically, at the moment, I’m wiring in some electrical horns and also the little compressor for some air horns.

What am I missing? (I was going to ask if I was crazy, but I knew the flood that would come with that).

And while I have your attention, oh wise electrical ones, different question for my shop. if I take a 110 VAC circuit to a motor, and convert it to a 220 VAC single phase circuit, does that cut the cost of my electricity? I know it cuts the amps in half, but does it cut the electrical charge ($) for that unit in half?

 

[Snoranger]

Oh wise (electrical stuff) ones……

Keeping in mind that I’m a pretty smart engineer and I’ve worked with all this stuff for the better part of 60 years, I have what is probably a dumb question. And yeah, yeah, I know there are no dumb questions - just dumb people.

View attachment 140674

30amp fuses. I don’t have a picture of the even smaller more modern fuses like this that I believe also come in 30 amp.

If I’m going to run a wire from here to there in the truck to power whatever, are these two fuses interchangeable because they’re both 30 A? Or does the big one somehow carry more whatever? My thinking is a 30 amp is a 30 amp is a 30 amp, independent of the physical size, when working in the same 12 V circuit.

I’m looking for the correct overall answer. Specifically, at the moment, I’m wiring in some electrical horns and also the little compressor for some air horns.

What am I missing? (I was going to ask if I was crazy, but I knew the flood that would come with that).

And while I have your attention, oh wise electrical ones, different question for my shop. if I take a 110 VAC circuit to a motor, and convert it to a 220 VAC single phase circuit, does that cut the cost of my electricity? I know it cuts the amps in half, but does it cut the electrical charge ($) for that unit in half?

Yes, they will both carry 30 amps. If you were going to run it on a circuit that was constantly pulling higher amps, I would say go with the maxi fuse instead on the ATC/ATO style on the left. But if it’s just an air horns, you’ll be fine based off duty cycle.
International had an issue on the 40 amp ATC style injector driver module fuse in the DT466s. They would draw right at about 37-39 amps and overtime it would melt the fuse and holder. Turns out, the standard contacts on the fuse holder and ATC fuse couldn’t really handle the constant 35+ amps, even though it was a 40 amp fuse. The tabs would start to warm up and pull away from the fuse, making everything even hotter. Then you’d get a no start road call for a melted fuse and holder. They solved it by switching out the harness to a different alloy on the connector at the fuse. We solved it by replacing the ATC fuses with maxi fuses.

 

[ekrampitzjr]

I am familiar with “R&B“ tires, but what is EOL?

EOL = end of life.