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I have been representing bussman fuses for almost 35 years now as a distributer. I can't begin to tell you how complex fuse sizing and co-ordinating can be.
Things as simple as having a down stream fuse blow and never taking out a larger fuse upstream can be very complex to work out.
When it comes to fusing nothing is usually simple unless the manufacturer did the engineering work for you.
Last edited by mathjak107; 09-27-2011 at 10:50 AM..
Well I found the answer to my question. The fuse has to be 10% apm than the circuit current draw, kind of what I was thinking. So technically there would be a formula to figure it out. Thanks.
If you intend to make auto repair your career, here's the same advice as in that other thread; know when to listen to others who obviously know of what they speak. It's OK to ask questions, there's a lot of knowledge here. Just don't argue with every answer you get just because you don't agree with it. You'll be amazed at what you can learn.
I asked a simple question that none of you seem to know the simple answer to. I'm not obligated to just take any answer as the right answer. I'm not saying you guys are giving me wrong information about the fuses themselves and the wires, but that's clearly not what I was asking. And I wasn't arguying, I was just saying your guys' information wasn't what I was looking for. Like I said, I found out the answer, regardless thanks for all your guys' info.
as an example If your load is 20 amp and you ran #12 wire the next standard size fuse is 25 amp and thats to big for #12 wire. in this case in order to go larger on the fuse you need to go larger on the wire to #10
I asked a simple question that none of you seem to know the simple answer to. I'm not obligated to just take any answer as the right answer. I'm not saying you guys are giving me wrong information about the fuses themselves and the wires, but that's clearly not what I was asking. And I wasn't arguying, I was just saying your guys' information wasn't what I was looking for. Like I said, I found out the answer, regardless thanks for all your guys' info.
Damn, I hope I had a better attitude way back when.
I asked a simple question that none of you seem to know the simple answer to. I'm not obligated to just take any answer as the right answer. I'm not saying you guys are giving me wrong information about the fuses themselves and the wires, but that's clearly not what I was asking. And I wasn't arguying, I was just saying your guys' information wasn't what I was looking for. Like I said, I found out the answer, regardless thanks for all your guys' info.
Lol... Seriously? I don't understand people like this, but I know enough and learned to just to ignore them the next time.
as an example If your load is 20 amp and you ran #12 wire the next standard size fuse is 25 amp and thats to big for #12 wire. in this case in order to go larger on the fuse you need to go larger on the wire to #10
The wiring isn't the problem though, you can choose the right wire with right length for the circuit. I understand that everything needs to be considered to construct the entire circuit to be built.
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