hf noise

[normht]

Planning to buy a early 90s miller dialarc hf and play with it in my garage at home.Should I or my neighbors have a problem with interference on tv's, computers,phones from welding with the hf turned on? Thanks

[zapster]

Planning to buy a early 90s miller dialarc hf and play with it in my garage at home.Should I or my neighbors have a problem with interference on tv's, computers,phones from welding with the hf turned on? Thanks


they just might...and you'll be the first to know about it..:laugh:

...zap!

[TIGBOY]

My Step Brtoher Has A Lincoln Tig 355 And His Neighbor Is About 25 Foot From Where It Sits Guy Complains All The Time That His Computer Is Acting Funny And Changing Screen Colors.has No Idea Why Tho.

[pulser]

Some of Miller's owners manuals includes info on how to correctly ground your welding equipment to avoid HF transmission.
Here is one.
http://www.millerwelds.com/om/o2803c.pdf

[normht]

Thanks guys.I thought I might have a problrm.I'll ground the unit and keep my garage door closed.

[awright]

It's generally not considered highly effective to close the shop door to prevent HF radiation. If it's just a metal garage door on a non-metallic house, closing the door won't make any difference other than to rearrange the radiation pattern of the interference.

Having your supply wires in EMT or rigid conduit or, less effectively, in armored cable, is effective, as is a good ground very close to the welder.

I would do the above and just go for it. I've been doing it that way in a concrete garage that is partially recessed into the hillside with no problems for several decades, and my nearest neighbor is only about 30 feet away. Come to think of it, being partially underground may be helpful. I can't get any cell phone reception in the garage, much to the annoyance of my wife.

awright

[normht]

Awright.The welder will be about 5' from and fed from my outside main dist. panel.I have a driven ground under the panel.Feeder thru the wall is in rigid pipe.I hope that doe's the trick.

[awright]

Sounds good for now. I'd go ahead and see if you get any complaints. If you do, it is your responsibility to bring it under control by FCC regulations, but I doubt you will have problems. Let us know if you do.

awright
(Not an electrical engineer.)

[Tailshaft56]

One thing to keep in mind is to make sure the points are adjusted correctly. You also want to set the HF intensity at the minimum required for reliable arc starts. Setting the HF higher only increases the odds of HF interference.