adding the ze of sub main to become ze and zs of other boards

[r.b]

My college wants me to calculate ze or zs of other boards from my original ze reading that I took at the incomer.I know zs =ze+r1+r2 so cant I just simply measure r1+r2 of the cable that is feeding my board off the incomer by testing it.This would be then added to my ze toget my ze of my new board and also the zs off the incomer.This is the only thing im not ok with is this how it works?

 

[steptoe]

It will no longer be Ze, it will become Zs of the sub, or Zdb for the remote board.

 

[kerching]

Yep, simple as that really.

BUT you only have 1 Ze that is at the main incomer

All others are termed Zs for the subs or Zdb for the dis board as my learn'd colleague above so correctly and succintly stated............. :coat

Electrickery?....it's not rocket science you know!, It's far more tricky......

 

[Andy™]

Ze is external to the installation. you can have 1 installation feeding another, but for college stuff you wont be going into that.

so your first DB has a Ze. any others DB's have Zdb (which is Zs of the submain)

but note that Zdb is not in the definitions of 7671