voltage drop related

[dannyrzk]

Good morning,
What does it mean when code use the following expression: The maximum total voltage drop when combining both the branch circuit and feeder shouldn't exceed 5%?


Thanks

 

[Carultch]

Good morning,
What does it mean when code use the following expression: The maximum total voltage drop when combining both the branch circuit and feeder shouldn't exceed 5%?


Thanks

Let A be the voltage drop on the branch circuit. From panelboard to load.
Let B be the voltage drop on the feeder circuit. From service point to panelboard.


A itself is limited to 3%. B itself is limited to 3%. However, the combination, A+B, is not limited to 6%, but instead to 5%.

 

[dannyrzk]

Let A be the voltage drop on the branch circuit. From panelboard to load.
Let B be the voltage drop on the feeder circuit. From service point to panelboard.


A itself is limited to 3%. B itself is limited to 3%. However, the combination, A+B, is not limited to 6%, but instead to 5%.

THANK YOU SO MUCH!

 

[iwire]

THANK YOU SO MUCH!

Keep in mind these are not NEC requirements. Just NEC suggestions

 

[dannyrzk]

Keep in mind these are not NEC requirements. Just NEC suggestions

That is true,but sometimes you'll find someone who would like to use it as a requirement. Good point. Thanks

 

[iwire]

That is true,but sometimes you'll find someone who would like to use it as a requirement. Good point. Thanks

As long as that person is paying for the work they can do that.

 

[dannyrzk]

As long as that person is paying for the work they can do that.

AGREE:lol: