Marco held up his phone, the calculator still glowing on the screen. "Because this thing doesn't guess. It uses Kirchhoff’s laws. It knows the resistance of copper at 75°C. It knows that if I go smaller, I lose 12 volts and the roaster thinks it's dying."
The screen didn't blink. It just answered. Voltage drop: 2.8% Maximum capacity: 70 Amps Upgrade to 2 AWG for 1% drop. Marco let out a low whistle. Number 4. That was three steps up from the #10 in the wall. It was thick as his pinky finger. Expensive. Heavy. electrical cable thickness calculator
He opened the webpage. It was a plain, no-nonsense tool: three white boxes and a blue button. Marco held up his phone, the calculator still
It listed the formula: .
He crawled out of the crawlspace, dust in his hair. It knows the resistance of copper at 75°C
Marco wiped grease on his jeans and pulled out his phone. No signal. He’d cached it earlier.