If you own an old Knob and Tube style wired home chances are it has its 3 way switches wired in a now Illegal Carter wiring system as seen in diagram below Now that EPA has rules that Incandescent bulbs can no longer be made r sold for consumer use has caused a real problem for those who have older homes.
In a carter system the Shell of the lamp socket switches polarity every time the opposite switch changes position it goes from shell being hot to shell being neutral . this constant back and forth is not tolerated by modern LED bulbs causing them to burn out faster and even possibly catch fire as i have seen some severely damaged bulbs which where on Carter Systems.
The bulbs are not meant to be powered reverse where a old incandescent bulb does not care.
Carter Circuits also do not allow dimmers to be used as well.
But once again make up a regulation and not think far enough ahead to see if there are any ramifications .
No comments:
Post a Comment