20 feet.
resistance (R) inductance(L) capacitance(C) shunt conductance(G)
Wen the length of overhead transmission line is less than 80 km with an operating voltage up to 20kv it is considered as short transmission lines Due to smaller lengths and low operating voltage the charging current is low so the effect of capacitance of short transmission lines is extremely small and therefore can be neglected as in case of distribution lines and only R L is to be taken into account while analyzing short transmission lines
connection of the ground of all the transmission lines and used as a communication cable between protection devices
Yes. It should not be used where there is any danger to electrical leakage. Definitely not on 110/220 VAC lines.
Conductance is ignored in short circuit studies because the inductance of the line is the dominant value. Conductance may not be ignored in stability studies.
Overhead distribution lines are made of aluminium not wood.
20 feet.
Well by not allowing boats not near coast lines
Overhead electrical lines are usually made of aluminum, and some have a steel strand added which is used to give the conductor more strength (not to carry current).
You may have neglected to copy something else that goes with the question, as there are no "above lines".
resistance (R) inductance(L) capacitance(C) shunt conductance(G)
Contour lines enable us to see changes in elevation using an overhead map
Overhead power lines are insulated from ground, typically using strings of glass or ceramic insulators. The wire itself is bare, though - it does not have insulation on it. There are many different types of overhead power line, but I'm not aware of any that actually have insulation.
Overhead wires do not require insulation, and it is easier to plant poles than dig miles of trenches.
powerlines mounted on pylons, see Overhead power line. For lines carrying information, see Overhead cable. An overhead line or overhead wire is used to transmit electrical energy to trains, trolleybuses
Guido Semenza has written: 'Graphical determination of sags and stresses for overhead line construction' -- subject(s): Overhead electric lines