Steps to reduce your exposure to high frequencies at home:
Have an electrician remove dimmer switches.
Eliminate sources of arcing (a source of very high frequencies):
Have an electrician inspect for and eliminate loose or poor connections;
Have the utility or a professional trim branches bumping or touching overhead wires
Electrical Distributor quote: "An external power surge, stemming from outside your home, is most commonly caused by a tree limb touching a power line...");
Have your electrician replace poorly made switches, fixtures, and appliances.
Have your utility replace split-bolt connectors with crimp-on connectors, if they have split-bolt connectors on your line. (If you have split-bolt connectors on line you own, you should have an electrician replace those as well.) Utilities have not installed split-bolt connectors in quite awhile because they have a tendency to loosen up and arc as time passes.
Have your electrician make sure the wire between the meter and your electrical box is large enough and in good shape. If it is too small, it is a bottleneck for high frequencies and a fire hazard.
Plug in high frequency filters. (Produced by Stetzer Electric email Dave at , distributed by Bio-Ag Consultants & Distributors, Wellesley, Ontario 1-800-363-5278) ( Approximately 20 are needed for the average house. They should be plugged in near sources of high frequencies, as well as, frequently used electrical appliances. (Some devices, such as hair dryers and low voltage halogen lamps, generate pollution that the capacitor will lower at the receptacle, but will not lower at the device. This is a particular concern when people are close to the device, as they are with hairdryers and desk and reading lamps.) The rest should be scattered throughout the house. If improvement occurs only slowly, more filters may be necessary. If way too few are installed initially, no difference may be observed, so it is important to put in sufficient quantity from the start.
Have a plumber install a PVC pipe between the house pipes and the water/sewer system, which has become an alternate return path for electricity.
Plug electronics into harmonic filters.
Convince your neighbors to do the same.
Walls do not stop electromagnetic fields. Be aware of this when arranging furniture. Sources of electromagnetic fields (EMF) to be aware of as you place your furniture include transformers for electronic gadgets (the box at the end of the cord), televisions, computers, electric clocks(don't put them right next to the head of your bed), and your electrical service panel and electrical meter, as well as wires feeding them. You will also want to be aware of where major wire bundles run in the walls of your house and keep the time you spend near them to a minimum. Electric blankets and heating pads should also be avoided, particularly old models. Any electronic device will have an electromagnetic field.

Other potential sources of exposure to high frequencies:
• Cell tower strobing lights that are installed without an RF Choke.
• Alternative energy systems installed without filters to clean up the waveform the inverter generates. Consult a power quality specialist.
• Work or school. A specialist should evaluate the power quality and recommend appropriate remediation measures. If that is not a possibility, the portable high frequency filters may be able to provide some relief.
• New watt-hour meters (your electrical rate meter) may include modern circuitry which generates pollution right at the meter.

What can your utilities do locally to reduce your exposure to "dirty" power?
• First and most important: enforce the section of the IEEE 519-1992 that specifies allowable distortion of current and voltage on return current. In other words, the largest polluters will have to clean up their power to certain specifications before returning it to the primary neutral. The utilities would still have to "clean" up after the individual polluters who already meet the specifications, but it would significantly reduce the overloading of the system.
• Make sure that wires at your house and your neighbor's house are connected with crimp-on connectors instead of split-bolt connectors. Split-bolt connectors can be a source of arcing and, therefore, high frequencies.
• Make sure that tree branches are trimmed so they are not touching the wires. Branches rubbing or bumping the wires can cause arcing. (With a little care trees can actually be trimmed away from wires without being mutilated.) Bare wires are more likely to arc, causing high frequencies, than insulated wires.
• Install a primary neutral wire that is 225% the size of the phase wires and/or filters on the utility side to filter the high frequencies.
• Install transformers with filters built in.
• Make sure that the wires are in good shape. In some areas the wires have overheated so much from being overloaded with high frequencies that the insulation is hanging off in shreds.
The electrical pollution considered in this report is electrostatic fields that vary rapidly in a random or noiselike pattern. When Guglielmo Marconi transmitted wireless signals from Polphu, England to St. John's, New Foundland on December 12, 1901 he used a spark transmitter that generated fields of this type. The antenna and the ground were connected to the spark gap. The wireless signals used today are much more orderly, since this is the basic way to enable multiple communication channels that share a common medium [1]. These modem signals have sinusoidal waveforms that are similar to those in the electrical distribution systems. However, there are millions of transmitters in the electrical power system that are the equivalent of Marconi's transmitter, and the power distribution wires are the antennas and grounds that couple these noiselike signals to humans. An inexpensive hand held AM radio receiver will detect these signals. Tune the receiver to the lowest frequency on the dial (about 500 kilohertz) which is below the lowest frequency broadcast station, turn up the volume, and you will hear a noise. As the receiver comes closer to a transmitter, the noise becomes louder. Try it near dimmer switches at various settings, personal computer displays and keyboards, fax machines, microwave ovens, electronic telephones, high efficiency fluorescent lamp bulbs, video tape recorders, and hand held hair dryers. The effects on humans depend on the path the currents produced by these fields takes through the humans, on the sensitivity of the individual, and on the amplitude, waveform, and duration of the fields. There is strong evidence that these currents may cause cancers, but this report is concerned with reducing the symptoms that humans can directly observe in themselves, such as poor short-term memory, chronic fatigue, depression, nausea, and rashes.
The Marconi Transmitters may be there because of the customer, or they may be there because of the utility. Some of the transmitters belonging to the customer are
· Hair dryers
· Dimmer switches
· Electronic transformers in low voltage halogen reading lamps
· Loose electrical connections
· High efficiency electronic systems
Some transmitters belonging to the utility are
· Switches controlling the power factor correction capacitors
· Tap switches on transformers for voltage regulation
· Deteriorated wires and connectors
There are transmitters which belong to other customers that are connected by the utility distribution system to your house. One such case is the strobe lights located on radio towers for aircraft warning purposes. The signals generated by these transmitters can travel considerable distances. The electric fields produced by these noise voltages between the power wires in a home can be reduced by lowering the impedance between the wires. Connecting a large capacitance between the wires has been effective in many cases in reducing the symptoms experienced by the occupants of the home. The capacitances used in these tests were about 200 microfarads across each 120 Volt circuit in the usual 240 Volt utility distribution system. In most cases these were installed at the main distribution in the home by a licensed electrician. Appendix A describes how an individual can evaluate the effectiveness of this mitigation technique on their symptoms.
[1] Sungook Hong, Wireless (from Marconi's black-box to the audion), The MIT Press, Massachusetts Institute of Technology, Cambridge, MA 02142, 2001.