Voltage Drop

March 5th, 2010 by admin Leave a reply »

Measure the distance from the transformer to the very first fixture on each run. You do this to calculate the voltage loss. Use this formula:

Cable Voltage Drop = (Wire Run length x Total watts on the run/ Constant) x 2

12/2 wire cable has a constant of 7500

10/2 wire cable has a constant of 11920

8/2 wire cable has a constant of 18960

These guidelines are used for illustration purposes and manufacturer Installation & Instruction Manuals should be used for actual installation.

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