How many watts in a volt or vice-versa?

[voipio]

There's a useful webpage, from a respected organisation, concerned with devices that may interfere with pacemakers:

http://www.heart.org/HEARTORG/Condi...erfere-with-Pacemakers_UCM_302013_Article.jsp

It gives quite long lists of electrical goods and devices which are likely and unlikely to interfere with pacemakers. You will need to click on the "Devices with Risk" and "Devices with little or no risk" headings to toggle the two lists.

Amongst other things, the article mentions:
"If you suspect interference with your pacemaker, simply move away or turn off the equipment. Your pacemaker won't be permanently damaged and will resume its normal activity."

In relation to arc welding equipments:
"Power-generating equipment, arc welding equipment and powerful magnets: Such as found in some medical devices, heavy equipment or motors can inhibit pulse generators.
If you work closely with or near such equipment, be aware of the risk that your pacemaker may not work properly in those conditions. Follow your healthcare provider's instructions about being around such equipment."

 

[Robotstar5]

I worked in a factory that did lots of welding, the only warning notices for IED (implanted electronic devices) were on a medium frequency spot welder and a "shaker" test rig that used an electromagnet the size of a dustbin.

 

[awemawson]

The magnetic field is proportional to the 'ampere turns' in a conductor, not just the current alone. So if your earth or welding cable is coiled the field strength will increase in proportion to the number of turns in the coil. However the input cable to the welder will not follow this rule, as the live and neutral magnetic fields cancel each other out as they are close together in one cable.

 

[Hank]

Very helpful Rikrobson, thanks so much and thank you all that answered my query.

 

[Hank]

Thanks to all

Thank you everyone that responded to my query. Most were very helpful.