The scenario
A 120V AC household branch supplies three identical 60W incandescent bulbs, each modeled as a 240Ω resistor in parallel across line and neutral.
What is in this drawing
Read the decisions behind it.
01
Model each bulb as a 240Ω resistor (P=V^2/R)
02
Place all three resistors in parallel across the same live bus and neutral
03
Include a 15A fuse on the live feed for overcurrent protection
Reuse for any parallel resistive load grouping where multiple identical loads share a common voltage source.
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