What is Sag
"is sag a necessity or evil" Discuss.
- The straight distance between the two poles gives the shortest distance. Therefore to minimize the length of conductor, one may stretch the conductor to make it straight.
- However if the conductor is stretched too much, beyond its safe value, then conductor may break due to excessive tension.
- It is very important that conductors are under safe tension. In order to permit safe tension in the conductors, they are not fully stretched but are allowed to have some dip.
- Thus the difference in level points of supports and lowest point on the conductor is called sag.
- In Figure A and B are two supports and conductor is placed in between two supports the distance S shows the 'sag'.
Tags:
Electrical