State Transmission Power Line Standards

Electric Field

Magnetic Field

State

On R.O.W.*

Edge R.O.W.

On R.O.W.

Edge R.O.W.

Florida

8 kV/m^a
10 kV/m^b

2 kV/m

-

150 mG^a (max. load)
200 mG^b (max. load)
250 mG^c (max. load)

Minnesota

8 kV/m

-

-

-

Montana

7 kV/m

1 kV/m^e

-

-

New Jersey

-

3 kV/m

-

-

New York

11.8 kV/m
11.0 kV/m^f
7.0 kV/m^d

1.6 kV/m

-

200 mG (max. load)

Oregon

9 kV/m

-

-

-

*R.O.W. = right-of-way (or in the Florida standard, certain additional areas adjoining the right-of-way).
kV/m = kilovolt per meter. One kilovolt = 1,000 volts.
^a For lines of 69-230 kV.
^b For 500 kV lines.
^c For 500 kV lines on certain existing R.O.W.
^d Maximum for highway crossings.
^e May be waived by the landowner.
^f Maximum for private road crossings.

ICNIRP Guidelines for EMF Exposure

Exposure (60 Hz)

Electric field

Magnetic field

Occupational
General Public

8.3 kV/m
4.2 kV/m

4.2 G (4,200 mG)
0.833 G (833 mG)

International Commission on Non-Ionizing Radiation Protection (ICNIRP) is an organization of 15,000 scientists from 40 nations who specialize in radiation protection.
Source: ICNIRP, 1998.