The scenario
An industrial facility has 18 blowers each rated 2 kW, supplied from a 480V 3-phase utility. A single line diagram is needed to document the power distribution layout including protection and switching.
What is in this drawing
Read the decisions behind it.
01
Used a single MCC bus to distribute power to all blowers
02
Provided individual 15A breakers for each blower for selective protection
03
Main breaker sized at 200A to handle total load and potential inrush
Any multi-motor blower or fan system where each motor requires individual overcurrent protection and a centralized power distribution.
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