Electrical experiment

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Dec 25, 2004 | 09:47 AM

#11

Paul Niwranski

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OK, I grabbed a handful of fuses here. I have some overlaps between styles too:

300amp ANL
150amp ANL
60amp ANL

60amp AGU
30amp AGU
15amp AGU

15amp ATC

And basically my results were that all were below the minimum resolution of my cheapo DVM which is 0.1ohms [img]graemlins/dunno.gif[/img]

Dec 26, 2004 | 12:27 PM

#12

pusnboob

50 Watt CAFz'r

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Hmph. Strange. My fuses were all the crap $1.00 AGU's bought in bulk. Perhaps all fuses aren't created equal? Interesting...definately warrants further research.

Dec 27, 2004 | 06:53 AM

#13

Sassmaster

Merry Christmass from CCA

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On a side note... I wouldn't worry aboutthe resistance of the power feed... I'd be more worried about the resistance of the frame that is acting as your ground.

Dec 29, 2004 | 11:24 PM

#14

Dave MacKinnon

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This is what I was eluding to in my article in PAS about upgrading grounds...

You can in fact measure the resistance of a cable when current is flowing through it, you simply measure the voltage drop across the cable and the current running through it...

The chassis of the average car works out to the same resistance as 4awg car audio wiring using this method.

Dec 30, 2004 | 02:18 AM

#15

Xiph0id

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Quote:

Originally posted by Dave_MacKinnon:
This is what I was eluding to in my article in PAS about upgrading grounds...

You can in fact measure the resistance of a cable when current is flowing through it, you simply measure the voltage drop across the cable and the current running through it...

The chassis of the average car works out to the same resistance as 4awg car audio wiring using this method.

I disagree with your theory and have tested it.

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Dec 30, 2004 | 11:06 AM

#16

Dave MacKinnon

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Which part of the theory??? The Resistance measuring or the ground resistance..

Dec 30, 2004 | 12:01 PM

#17

Xiph0id

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Quote:

Originally posted by Dave_MacKinnon:
Which part of the theory??? The Resistance measuring or the ground resistance..

The 4awg chassis theory.

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Dec 30, 2004 | 12:47 PM

#18

Dave MacKinnon

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It depends on the vehicle of course... Some are going to be infinitely better than others...

Dec 30, 2004 | 03:49 PM

#19

Xiph0id

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Quote:

Originally posted by Dave_MacKinnon:
It depends on the vehicle of course... Some are going to be infinitely better than others...

I think most will be far better then 4 awg.

We gained a couple of tenths of a DB from switching from 1 1/0 power and 1 1/0 ground to 2 1/0 powers and 2 1/0 grounds using the chasis.

Thats a large gain considering how much power is needed to gain .2 or .3 db

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