Hello Friends,
Regarding the subject of knob and tube wiring, there may be yet another aspect that warrants our attention. In his book, “Tracing EMFs in Building Wiring and Grounding”, author Karl Riley writes:
“Effects of separation: So what kind of wiring allows magnetic fields to generate? Any wiring method which allows some or all of the neutral current to separate from its circuit and travel in other paths before joining up again. In other words, when conductors of the same circuit are physically separated. ……….. ………………………………………………………………………………………………………………
An example of separation: A former wiring method which one still sees frequently in cities with older residences, such as San Francisco and Boston, illustrates what happens when conductors are separated. Up until the 1940s it was legal to run the hot and neutral conductors along completely separate paths. This is called knob and tube wiring and when you find it you will always find high magnetic fields. The only solution is replacement with contemporary wiring.”
For an interesting and informative perspective, please see:
http://www.mikeholt.com/technical.p...pe=u&title=Power%20Quality%20Article also,
http://www.mikeholt.com/technical.php?id=grounding/unformatted/emf&type=u&title=Electro%20Magnetic%20Fields%20(EMF)
THANKS!
