Section 02 · Algebraic Circuits & Conduit
The Electrician
Pick a lab below. Every calculator obeys real NEC rules — ampacity, derating, continuous-load limits, and voltage-drop targets.
Ohm's Law & Power Wheel
V = I × R • P = I × V
Every circuit obeys Ohm's Law. NEC §210.20(A) requires continuous loads stay ≤ 80% of breaker rating.
Solve for:
Breaker:
Voltage
120.0 V
Current
10.00 A
Resistance
12.00 Ω
Power
1200.0 W
Load vs 20A breaker50%
80% continuous limit = 16A
Safe load