Electrical Wiring in the Home/comparing wires
QUESTION: Hello Greg,
I'm comparing two extension cords for 120v and 15amp or less, which of these two wires is thicker (less resistance)?
a wire composed of three separate gauge 14 cables (includes ground)
a gauge 10 wire with ground?
My doubt comes from not knowing how thick are the cables that compose the gauge 10 wire
ANSWER: If you took three 14 awg wires and connected them together at each end you create about an 8 awg, in affect.
The actual sizes are:
14 awg = 0.064084 inches
10 awg = 0.10189 inches
You cannot simply add up two 14 awg in inches to come up with the correct figure.
So, two 14 awg DOES NOT equal (0.064084 + 0.064084) 0.128168 inches
Hope that helps.
[an error occurred while processing this directive]---------- FOLLOW-UP ----------
QUESTION: Dear Greg,
Thank you for your quick response. If I'm understanding your explanation right, the cable composed of three 14 awg wires would be aproximately like an 8 awg wire,and therefore it's thicker than the 10 awg cable... Did I get the idea?
Thank you in advance,
I am not talking about thickness.
In the electrical world we talk about resistance, impedance and ampacity.
A rope is thicker, but has a really high resistance so we do not speak of "thickness".
So, if all three wires are 14 awg and tied properly together they would look like and act like an 8 awg wire to the electrons.
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