i would stick to original gauge. larger gauges create much more resistance for the flow of electricity... meaning less efficiency and power.
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"so persuasively did they talk; and yet there is hardly a word of truth in what they have said."
Plato, Apology
"On life's journey faith is nourishment, virtuous deeds are a shelter, wisdom is the light by day and right mindfulness is the protection by night. If a man lives a pure life, nothing can destroy him."
Buddha