longer wires must be a smaller wire gauge number in order to carry the same current as shorter wires?

Question

true or false

Answer 1

Wire Gage definitions given by the previous answerers are fine.The Current carrying capacity of insulated electric wires are rated as a function of area of cross section and conductor metal such as copper or Aluminium. A safe thumb rule for electric wire is @ 5 amp per sq.mm copper section and 2 amp per sq.mm of Al conductors. Choice of bigger section will reduce the (IR) volt drop and have a reduced line loss(IxIxR) wattage.

Answer 2

that depends on how much longer the wire needs to be, and how much current the wire is carrying. for something like a stereo head unit, 18 gauge wire up to about 25' or so is fine as the current draw is low. however if you are powering an amp, then 8 gauge is the minimum you need depending on the current draw, and how far the amp is from the power source.

Answer 3

That is true. The smaller number wires are thicker and can carry more amps. Good luck.

Answer 4

TRUE
A smaller gauge number is actually a larger diameter wire, capable of carrying higher current.
A longer run should use a larger gauge (smaller number) to avoid overheating.

Answer 5

depends on molecular struckture

Answer 6

TRUE