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Tool Talk Discussion Forum

Lincoln Ranger 8 welder

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RickB

06-26-2005 02:56:41




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What size cable is appropriate for a Ranger 8 gas drive welder? Cable length will be 50'. THanks in advance, RickB




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RickB

06-26-2005 16:06:45




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 Re: Lincoln Ranger 8 welder in reply to RickB, 06-26-2005 02:56:41  
Thanks to both for reasonable, real world answers.



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T_Bone

06-27-2005 01:18:31




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 Re: Lincoln Ranger 8 welder in reply to RickB, 06-26-2005 16:06:45  
Hi Rick,

I tried replying yesterday but the system wouldn't let me post.

A Ranger 8 is about 225a maximum but at what amperage do you use for most of your welding? If your the typical welder using 1/8" electrodes, then 150a welding lead would be a good choice. It's a smaller diameter thus will let you control the electrode holder alot easier thus cause less hand fatigue yielding better welds.

If you really need the full 225a output then look at using 250a cable with for 90% of the run with using 10ft of 150a lead for the stinger. I've used this method upto 300a with good results provide the stinger gets a small cooling off period after about 10 rods are burned.

The ground can always be 250a lead to the work.

I always use Tweeco twist lock lead connectors. I start with a 1ft stub at the machine on both leads, or just long enough that the connector won't rub off dial paint when disconnected, then 10ft from the end of the ground clamp and at the end of the positive lead.

This way if you want to add 100ft of lead, your machine is alredy set-up to add lead quickly or store the lead or so someone don't use there 5 finger discount when your not looking.

Ya there expensive, about $20eh, but the typical home/small shop will only buy one set in there life time.

T_Bone

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Big Jim

06-28-2005 01:52:04




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 Re: Lincoln Ranger 8 welder in reply to T_Bone, 06-27-2005 01:18:31  
Harbor Freight has some clone Tweco connectors made in India for a couple of bucks apiece. Mate just fine with the genuine article. Might not survive in industry but should last forever in a home environment. Cheap enough you can get fancy.



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Stan Lewis

06-26-2005 14:12:54




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 Re: Lincoln Ranger 8 welder in reply to RickB, 06-26-2005 02:56:41  
Hi, RickB

What ScottP says about 50' 1 gauge cables on his Miller Bobcat is an example of real world applications being a better benchmark than formulas. 1 gauge is enough because you rarely if ever weld at the full 225 amps, and it isn't physically possible to reach the 100% duty cycle with stick electrodes.

Tables of wire gauge to current output list a 1/0 gauge cable for 100' at 200 amps, and 2/0 for 100' at 250 amps. 100' is the correct distance because you have to count the combined length of both the electrode holder cable and the ground cable.

Since a Ranger 8 is rated at 225 amps at 100% duty cycle, the conservative approach would be to go for the larger cable. But 2 50' 2/0 cables seems like overkill, not to mention expensive. If you think you'll be burning a lot of rod at 180 amps and above, 1/0 might be a reasonable compromise. Otherwise, Scott has ten years of proof that 1 gauge is enough. Your call.

All the best, Stan

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ScottP

06-26-2005 09:10:00




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 Re: Lincoln Ranger 8 welder in reply to RickB, 06-26-2005 02:56:41  
Rick
I have 1 gauge cable on my Miller Bobcat 225G.
Their near 50' long, been on there near 10 years.
Scott



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