Replies

1. 
   bobl | Mar 23, 2005 04:44pm | #1

   less voltage drop with 12ga than 14 ga

   also with an extension cord u are using a plug, more solid connections in the house.

   Voltage across something = current thru it multiplied by its resistance

   example cord has resistance of .1ohm/ft, 10 ft long resistance is 1 ohm ( i have no idea what a cords resistance is)

   push 1 amp thru it then voltage across the cord (volatge drop) 1 volt

   push 10 amps, voltage drop is 10 volts

   bobl Volo, non valeo

   Baloney detecter

   
   

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   Edited 3/23/2005 9:49 am ET by bobl

2. 
   davidmeiland | Mar 23, 2005 05:11pm | #2

   The more copper there is, the easier it is for the electrons to get to your saw. I only use a 14ga 25-foot extension cord for plugging in a 3/8" corded drill or a small sander for lightweight tasks. Anything like a skilsaw, sawzall, is going to be a 12ga cord. I have a 10ga cord for my tablesaw.

   There is a voltage drop calculator somewhere online.... anyone?

1. 
   Stuart | Mar 23, 2005 05:59pm | #3

   Here's the voltage drop calculator I use. http://www.electrician.com/vd_calculator.html You should try to keep voltage drop at 3% or less if you can.

3. 
   Manchild | Mar 23, 2005 06:01pm | #4

   You can also try to plug your 12 ga. cord into a twenty amp circuit. Get as close to the circuit breaker as you can. The receptacle for the clothes washer is a good bet. That way you shouldn't be throwing breakers either.

4. 
   jim8 | Mar 23, 2005 06:53pm | #5

   Thanks to all for your replies.  Will stick to the 12ga extension cord.