Table 1.2

Line Voltage
(V)
Electric field Strength
(V/m)
Magnetic Flux Density
(uT)
400 00011 00040
275 000600040
132 000200011
33 0003507
11 0001207
415< 11
National Radiation
Protection Board
Guidelines for Safety
10 000 - 15 0001600
Earth's Magnetic Field-40 - 50
(Source : Electricity Association Services Services Ltd, London 1996)

Table 1.2 Likely maximun electric and magnetic field strengths directly under overhead line. Note that magnetic field is dependent upon current carried

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