ncc74656 Posted February 15, 2019 Report Share Posted February 15, 2019 how does grounding to the frame actually work? i started looking into electrical and i may be in one of those 'too deep' moments. steel has like 5-10% the electrical conductivity as copper right? so if we are talking about the frame being a busbar then it stands to reason that the frame would need to be crazy thick to support the current transfer that a 0ga copper wire can handle. so what is happening? is there just such a large pool of electrons in the frame that this some how changes the math? with this thinking the new aluminum body vehicles would be far better in terms of electrics when installing amps then, no? nothing, gutted Link to comment Share on other sites More sharing options...
Broke_Audio_Addict Posted February 15, 2019 Report Share Posted February 15, 2019 Test it, let us know. That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals. Link to comment Share on other sites More sharing options...
Joshdashef Posted February 15, 2019 Report Share Posted February 15, 2019 Your hoggin the blunt man 😂 There probably is a sound reason why it works but I’ve heard mixed things. 1 You should ground to your frame! or 2 You should have ground runs and power runs all the way to your alternator or battery either way it works but as a matter of efficiency what is better? Idk but grounding to the frame seems a whole lot more cost effective once you do the big three. SMD Tool Map (2022): https://www.stevemeadedesigns.com/board/topic/220267-smd-tool-map-2022/ My Port Size Calculator (in progress): https://www.stevemeadedesigns.com/board/topic/217087-port-size-calculator-in-progress/ Common Port Walls for a Slot Port: https://www.stevemeadedesigns.com/board/topic/217076-common-port-walls-why-it-matters-to-your-box/?tab=comments#comment-3240313 Link to comment Share on other sites More sharing options...
DiBo Posted February 15, 2019 Report Share Posted February 15, 2019 40 minutes ago, ncc74656 said: how does grounding to the frame actually work? i started looking into electrical and i may be in one of those 'too deep' moments. steel has like 5-10% the electrical conductivity as copper right? so if we are talking about the frame being a busbar then it stands to reason that the frame would need to be crazy thick to support the current transfer that a 0ga copper wire can handle. so what is happening? is there just such a large pool of electrons in the frame that this some how changes the math? with this thinking the new aluminum body vehicles would be far better in terms of electrics when installing amps then, no? Vehicles with a true frame have good ground capabilities. That's all I know. Keep it simple... Frames are thick and there's a lot of material to handle a lot of ground current. In my lowrider days we'd ground 10-16 batteries rt to the frame and run our batteries in series to so I know frames can handle a lot of juice. Link to comment Share on other sites More sharing options...
slowfkncar Posted February 15, 2019 Report Share Posted February 15, 2019 350lb dense carbon steel > 20lb of 0 gauge copper. Link to comment Share on other sites More sharing options...
k58.cross Posted February 15, 2019 Report Share Posted February 15, 2019 Yeah the sheer amount of metal is the thing. The reason a wire has a current limit is because it will heat up. The chassis or frame of your car is a big heat sink and thus should be able to handle TONS of current. But the real question is how much power is lost due to the lower conductivity of the metal and mating surfaces. Some stuff I read says the chassis or frame resistance overall is pretty small. Resistance is what dissipates power because it creates a voltage drop. Electrical power dissipates in the form of heat~~~ Link to comment Share on other sites More sharing options...
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