Question:

Does larger gauge wire reduce voltage drop?

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Hello, I am looking to reduce voltage drop in a remote fireworks detonator and was wondering if larger gauge wire would reduce voltage drop? Thanks.

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  1. Voltage drop is caused by resistance. A larger gauge wire will offer less resistance to current than a smaller gauge wire. That is why speakers sound better for example, or why you use a larger gauge wire with a higher amp breaker in home wiring.


  2. The thicker the wire, the better the current is going to flow. the gauge number is smaller when the number increases, so gauge 4 its gonna be a half an inch thick wire while an 18 is gonna be really thin.

  3. Yes, absolutely. Table in link below shows how much.

  4. yes length and size do play a role. but too large and you will lose more because it will fill the entire wire instead of forcing it all to the firework slat.

  5. Yes For example:

    Given a 100 foot run of 120VAC single phase circuit and a 10 amp load

    20 AWG wire would have a 10.45 VAC drop

    while 1  AWG would have a .127 VAC drop

    THESE FIGURES ARE FOR DEMONSTRATION PURPOSES ONLY!

    DC circuits are even worse! I used to design battery powered emergency lighting systems and the calculations for wire sizes would drive you nuts!

  6. the voltage will be the same, the amps would drop

  7. Yes a larger wire will reduce the voltage drop. Remember that a larger ga wire has a smaller number.  A #2 wire is larger than a 12.

  8. There are 4 things that effect voltage drop.  Material, area (in circilar mills), length, and temperature.   "Material" would be copper or aluminum.  Aluminum has a higher specific resistance so there would be more voltage drop per foot than copper.  "Area"  would be the gauge of the wire.  A larger gauge would carry more current and have less voltage drop.  "Length" - resistance per foot of wire times the length. Longer wire means more resistance and more voltage drop.  "Temperature"- Higher temps can cause more resistance causing voltage drop.  So to answer your question...larger gauge would reduce voltage drop.

  9. no, it will increase it.

  10. No it won't.

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