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wire gauge help

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Am in the process of putting new ends on my battery cables and need a chart to tell me in faction or decimal form what the sizes are... they sell the battery ends from 8 down to 1... and 4/0-1/0
 
Wire Gauges

First off the wire size is inversly proportional to the gauge number. This means that 2 gauge is larger than 10 gauge. When you get up to 0 size then it goes by "OT", 2/0 is 2 ot or double zero. after 4/0 it goes to MCM but you will not likely ever see cable this large, we use it for the secondarys on spot welding equipment. There is also a minor varience in size depending on the stranding of the cable, more flexible type cable is usualy just slightly larger.



#8 . 146 dia

#6 . 183 dia

#4 . 231 dia

#2 . 292 dia

#1 . 332 dia

1/0 . 372 dia

2/0 . 417 dia

3/0 . 468 dia

4/0 . 527 dia

250MCM . 574 dia

300MCM . 629 dia



Neil:D
 
&50 MCM

750 MCM is still small, we commonly use 1500 MCM dry jumpers on spot welding equipment. They are made from cable that is fine stranded much like welding cable, and the lugs are just a tubular copper sleeve and are crimped to a rectangular cross section, the bolt holes are drilled through the cable and sleeve after they are crimped. They do make them larger, only they are not so flexible, usualy it's best to go to water cooled, that gives about double the capacity. It's not very often that we actualy have to make our own jumpers, usualy we purchase them ready made for the job we are building and keep a some stocked in the stores just in case we find we need a diiferent size.



Neil:)
 
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