EMF radiation from inverter?

[Sunking]

Back to the original OP worries about EMF. Unfortunately people are paranoid and our government makes it worse. Our Government lumps all of energy into the EMF title which is nonsense. EMF = Electromagnetic Fields. or Electric Magnetic Force. Both means the exact same thing. EMF occurs at power frequencies of 0 Hz (DC) to 300 Hz. Our stupid fear mongering government keeps the public in the dark and calls all energy and radiation EMF from DC to Gamma Radiation. The only distinction they make is Non-Ionizing radiation which is considered harmless to humans from DC up to visible light, and Ionizing radiation which is hazardous to humans from Ultraviolet light to Gamma rays.

EMF from power lines or power sources is magnetic just like any magnet produces. It does not radiate from the source like radio, light, X-Rays and Gamma Rays. The Magnetic Field produce are only evident if you are very close to the source and decay very quickly with distance.

The strongest EMF fields produced in public are those from High Voltage Transmission lines from the Generating Plant to the Cities. At the distance of 1 foot produce 90 Milligause of a magnetic field. 90 Milligause is not enough to do any harm with long tern exposure. At a distance of 200 feet the magnetic field from high voltage power lines decays into back ground noise level of 2 milligause levels which is caused by Earths magnetic fields.

Many studies have be done on EMF. After 30 years there is no evidence EMF is harmful. Test are still ongoing using Electric Power Companies Lineman who are constantly exposed to high EMF. In 30 years that group has no higher rate of cancer or illness than any other group.

Back to our Government and the two most paranoid agencies there are, OSHA, and the Employment Prevention Agency (EPA). Take a look at their guidelines on EMF exposure. Go ahead and look, there are none. Neither agency has any requirements or guidelines. What they do say is: If you have concerns about EMF is to stay 1 arm length away form appliances and electrical power equipment. Beyond that distance the EMF fields decay to background noise.

SK says if you are concerned about EMF, Wear a Tin Foil Hat so the rest of us know to stay away from you.

Hell you can buy bracelets, necklaces and ankle bracelets made from magnets to use the healing power from magnets. Magnets are strong EMF sources. Are you scared of a magnet? Do you play with them?. Do you use them to stick things on your refrigerator?

[DanKegel]

thanks for the explanation.

My granddad's brother's house had a party line. I remember picking up the phone in ~1978 and hearing the other house. That's the only time I've ever run into one.

[Sunking]

thanks for the explanation.

My granddad's brother's house had a party line. I remember picking up the phone in ~1978 and hearing the other house. That's the only time I've ever run into one.

Was standard practice from the early 1900's to the end of the 70's. Phone companies just did not have that much copper buried and strung up. Plus the technology did not allow for every one to have a private channel and had to share. But it is not completely gone yet. Even in the USA there are still some Party Lines out there. Example Indian Reservations, Hill Billies in AR, NC, and TN and other remote rural area stil use them where copper facilities do not exist. Erricson and Nokia (formely Alcatel Lucent) the two switch manufactures left still support Party Lines in their Subscriber Line Equipment.

In Central and South America Party Lines are still common. But here in the USA land line phone companies are a dead end biz and will soon be 8-Track tapes and Buggie Whips.

Catch is you have to have a special phone with Frequency Selective Ringer. In the old days before deregulation you could only buy a phone from the phone company who would wire and configure the phone for you.

[inetdog]

It has to do with the Operator old switch board cross-connect cable just like you phono Jack you plug into your cell phone for ear buds. Tip for the end of the plug electrical contact, followed by and insulator, and then Ring electrical connections completing the return circuit.

And the third electrical connection, used some of the time inside the switchboard or CO, was the remaining part of the plug, called the sleeve.