Averaging or RMS meters do measure the amount of electricity present, but the GS meters have demonstrated their ability to measure the amount of harmful electricity present. Electrical current enters the body more readily at higher frequencies, and body current at those higher frequencies can be harmful. The GS meter measures currents at those higher frequencies by measuring the sum of the frequencies above 60 Hz. Electrical pollution in home and offices can be caused by internal factors. Some internal factors may include electronic equipment that distorts 60 Hz power when the dc power has created ac power. A distorted 60 Hz wave is a normal 60 Hz current polluted by high frequency voltage and currents. Some of the 60 Hz normal currents can be converted into a higher frequency when flowing back to ac conductors. Electrical pollution is not caused by the actual power itself, but what comes along with it in transfer and production. This is why it is also possible for the electricity in your home or office to be polluted by outside and near sources, like neighbors or through an internal electrical system, in an office building for instance. If you share a transformer with another office or home, their electronic devices could be producing high frequencies currents or distortion in your home through computers or other appliances. Currents from that transformer that are intended to be directed back towards the neutral may flow to your home or office instead due to overload. This is considered a downstream effect. Utility companies have not created solutions to protect customers from these downstream effects commonly produced by the shared transformers and electrical infrastructure of neighbors and office buildings. A GS meter can measure the amount of electricity flowing into your home or office that may be occurring at harmful higher frequencies. While the meter measures the amount of harmful electricity present, the Graham Stetzer filters (GS filters) can help reduce the harmful electricity that enters home or office environments. The GS filters work best when the utility has an adequate neutral conductor. This means that the conductor can handle more than the standard utility practice to meet thermal or voltage regulation. This information would have to be attained from the utility company to understand if the filters could work properly in your home or office. If the conductor can thwart inward radiation from occurring, then the filters can be a complete solution for someone trying to rid their home or office of electrical pollution and harmful high frequency currents. Filters can be a fully effective means to end the circulation of electrical pollution into homes or offices. However, there are some circumstances that can affect the functionality of the filters and let electrical pollution in. The neutral conductor must be adequate. The filters route harmful electrical pollution high frequencies to the neutral. If the filters are not working properly, it may not be the filter but the neutral. This would have to be investigated through the utility company. GS meter readings show how much the filter is working against electrical pollution in the home or office environment. If the meter readings are still showing high frequencies, it could be the neutral as previously mentioned, or several other instances. According to Stetzer Electric, the manufacturer of the filters and meters, there are three end cases when installing a filter does not decrease the filter reading. The first case would be if the meter were measuring distortion outside of the effective range of the filter. The range of the filter cannot read frequencies under 4 Hz or more than 100 Hz. This answers the question of why a non-zero meter reading would not be acceptable. Second, if the electrical locations of the meters are on different circuits in a home or office, they may be too distant for the meters. Last, local resonance can occur that affects the performance of the GS filters. Local resonance occurs when a filter enables local current oscillation between the filter and the circuit which is connected to a specific frequency. Local resonance can often be corrected simply by adding another filter. By installing the filters and meters in homes and offices, those affected by electrical pollution have seen improvement in health problems. Not everyone is affected by electrical pollution in apparent ways, but some people have attributed certain health problems to the presence of electrical pollution. Reducing the high frequency currents by use of the filters has proven effective in lessening the intensity of health problems attributed to the presence of electrical pollution. As mentioned previously, it is important that filters are installed correctly to optimize performance and results.