1. Nov 4, 2011 #1

   jeydheep

   

   I Suppose, need to choose a correct wire gauge for a lighting circuit, how to calculate it. Input load 12V Battery, load (two 100 W bulb), .Please clarify.

    

   jeydheep, Nov 4, 2011
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3. Nov 4, 2011 #2

   schip666!

   

   I googled: wire gauge current limit
   and found: http://www.cablesandconnectors.com/wiregauge.html
   
   To figure out the current (amps) divide the wattage by the voltage: 200W/12V = 16.66A
   
   Does that help?

    

   schip666!, Nov 4, 2011
4. Nov 4, 2011 #3

   Carl Pugh

   

   I would recommend that you Google "national electric code ampacity of wires".

    

   Carl Pugh, Nov 4, 2011
5. Nov 4, 2011 #4

   sophiecentaur

   

   Science Advisor

   Gold Member

   2017 Award

   btw, you need to choose the gauge of wire for just over, rather than just under the current it needs to carry. (It needs to be said)

    

   sophiecentaur, Nov 4, 2011

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