Lucky? Find?

[arftist]

R. Funk, Do we as blacksmiths follow all codes? I would certainly hope so. Codes are not suggestions or ideas,nor are they rules to be bent or broken,winked at etc. Do it right or do not do it. My old johnson gasser could not be run inside, so I run it outside.

[Golden_eagle]

I have an odd habit of over building stuff... It gets me in trouble sometimes.

[welder19]

Something a lot of people tend to neglect is keeping welders clean, wether it has a fan or not, once a week or so (more if your in a especially dust area) take your air hose and blow them out, the dust and such that collects inside greatly reduces the cooling which is important if you want the unit to last a long time.

welder19

[arftist]

Newbiesmith, sorry I didn't see this earlier. I have had several of these welders and they do have fans. I highly recommend that you repair the fan, copper core or not it will burn out.

[topak]

gee.,i am not aware of these electrical stuff, hope this electrical contractors could help you most.


bad link removed

[topak]

i want to know more about electrical installation works.

This link has been removed as there is no content on the page, only contact information

[mod07]

Its a commercial electrical contractor's website.

IFI is an international forum no one here will have any clue as to their qualifications. Ask local people they have worked for in the past.

Since we do not allow advertising here, the link you posted is borderline, for anything other than asking for recommendations about their work.

IFI staff

[Dodge]

My Lincoln 225 amp tombstone is over 30 years old. Can't say about the core but it does in fact have a cooling fan. I used to run it on a 220v dryer circuit (30 amp?) I have since installed a dedicated 50 amp breaker for my shop. Since I no longer have to run 120 feet of extension cable to the dryer outlet, I believe the welder actually performs better not to mention the added safety

[Joe H]

Steve, isn't it true that a circuit can be derated, per code, when it's a dedicated circuit for a low-duty cycle appliance like a welder?

I use a 10 gauge 100' extension cord with my TIG sometimes. Drawing as much as 50 amps, but in short spurts with breaks in between. The welder has a 20% duty cycle at max output, so it's only even possible to draw 50 amps for 2 minutes out of every 10. 2 minutes of arc time out of 10 doesn't sound like much, but I've NEVER had the welder shut off due to duty cycle. I've checked the cord after doing alot of welding and it has never even been warm.

[steve sells]

Yes, BUt you may have misunderstood the meaning of that term.

De-rating a circuit is done many times. But de-rating is for the total load of a panel, NOT the individual line, a breaker (fuse, etc) is there to protect the wiring from over load. An example is a 8 unit building, each unit may have a 100 amp panel, but the building set up may allow you to de-rate that to a 400 amp main panel to service the entire building, as when the units are offices, they may have 100 amp sub panels. but never need that much. it does NOT mean to use smaller wires. a 100 amp panel needs 100 amp wire, a 400 amp needs 400 amp wire. 50 amp welder plug needs a 50 amp wire and breaker, IF you have 10 gauge then its 30 amp. putting a 50 amp breaker on a 30 amp line, is removing the stated protection, and can cause you or your kid, friends, etc, to DIE.

A laundry have have 20 circuits for 30 amp dryers. While each circuit is still a 30 amp breaker, the main panel can does not need to have 600 amps. due to de-rating it can be less than a 600 amp panel, because it should never need that much. But each 30 amp line, must still be protected by a 30 amp breaker if they are wired with 10 gauge THHN wire. Just as 50 amp breakers should have at least 8 gauge THHN wiring.

Any more info and I will have to charge you