line transmission impedances 1

[reinforcedsoil]

Could somebody help me to find positive and zero sequence impedances for 27.6 KV, vertical with 5’ conductor spacing, 556 AAC OH lines per KM

 

[davidbeach]

There are many good references in faq238-1287 that will provide information as to how to calculate the impedance. This site is not a source for free engineering; if you don't know how to calculate impedance why don't you ask the electrical engineer on the project?