wire jumpers in PCB design

[purvis]

Hello all,
I am designing/retrofitting a circuit board and I need to find out how many wire jumpers can be used on a circuit board of a certain size and the maximum length. For instance, a 4"x7" board has X# of jumpers or so many jumpers per square inch or whatever the statndard dictates. Any assistance would be greatly appreciated. Thank You.

[Tom]

I imagine you are referring to a UL specification that only allows a certain number of jumpers per square inch. I do not believe there is a limit.

[purvis]

Thanks for the info