[RE-wrenches] Combining conductors

[Larry Crutcher, Starlight Solar Power Systems]

Wrenches,

Here's a tough one for me to understand. I am installing 2 volt AGM batteries. There are two terminals for each battery polarity. I have some height limits so I need to use the minimum wire size. Here's my question: If I combine two identical conductors, what is the equivalent single conductor size? 

I found one "rule of thumb" that says doubling like conductors creates a AWG decrease of 3. Example: two #2 will be equivalent to 2/0. Is this true?

Thank you,

Larry Crutcher
Starlight Solar Power Systems





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