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Electrical Wire and Cable

What is the formula for the computations of main wire?

The electrical loads have much to do with the design of the main wire and main switch…..

Electrical Question from Jeremias about wire and main switch sizing
Background: Jeremias,  from Cebu,Philippines

Question: What is the formula for the computations of main wire and main switch?

Additional Comments: I guess it could brings me satisfaction

Dave’s Reply:
Maligayang Pagdating my Filipino Friend, Salamat Po – Thanks for your electrical question Jeremias. How is everything in Makati City these days?  Jeremias – what is the application? The electrical loads have much to do with the design of the main wire and main switch.

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