Hi Paul, The wire size doesnt make a lot of difference. To get an advantage (significant increase in capacitance) a second wire needs to have at least 2 feet (and preferably 3 feet) separation from o
Dear Paul, LF Group, One formula for C per unit length: C = 24/Log(4H/d) picofarads/m , H= height, m, d = diameter, m So the capacitance depends on the logarithm of the ratio of height over wire diam