Performance of a mod

[YUzazaMY]

Are the wire and switch use in a mod effect the performance?
If I use a small wire and a tactile switch in 3.7V mod and PT 5V mod, Does it reduce or increase the mod and PT performance?
What is the basic thing that I need to follow, to get all the amp from the battery to the atty, so I can get the full performance from the mod?

May be this is a stupid question, but it is really important for me as a newbies that want to learn.

 

[TomCatt]

Larger wire will give better performance, since it can carry more current. With switches, it's not a matter of effecting performance as much as it is how much current the switch can handle before it fails. Tactile switches usually have a 0.5A or less rating. Continued use of higher currents (PVs use ~1.5A and HIGHER) with a tactile switch will result in it failing. Switches used for PVs should be at least 3A, unless using a MOSFET to limit the current.