In a sinusoidal resistive-load exercise, two 120 Vloads share a neutral and are mistakenly connected to the same leg of a 120/240 Vsplit-phase supply. One draws 8 Aand the other 10 A. Ignoring other loads, what neutral current results?
- A2 A
- 18 A
- C0 A
- D10 A
Where to look it up
Explicit exercise assumptions; not a universal code requirement.
Why B is correct
The two stated currents are in phase, so they add in the shared return:8 +10 =18 A. This can overload a neutral not sized for that current. The 2 A difference would apply to these idealized loads on opposite legs; it is not a universal rule for arbitrary multiphase or nonlinear loads.