Sag of Transmission Line Calculator (Same Height Supports)

Sag of Transmission Line Calculator

Calculate the sag of a transmission line with supports at the same height.

Using the formula:
\[ S = \sqrt{\frac{L \,(L_c - L)}{8}} \] where \(L\) is the horizontal span and \(L_c\) is the cable length.

* Enter span (m) and cable length (m); cable length must be greater than span.

Step 1: Enter Parameters

Horizontal Span, \( L \) (m):

Example: 200 m

Cable Length, \( L_c \) (m):

Example: 210 m (must be greater than span)