Why does our 3-phase motor trip the breaker every time it starts?
A 3-phase motor trips the breaker on startup because the inrush current exceeds the breaker's instantaneous trip setting, often due to an…
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Industrial & Workplace Energy
Practical, step-by-step fixes for industrial & workplace energy problems — 63 published so far.
Why does our air compressor keep tripping the breaker when it starts up
Your air compressor likely trips the breaker on startup because its motor draws 5-7 times normal current for a few seconds, overwhelming…
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Why does our air compressor keep tripping the circuit breaker?
Your air compressor trips the breaker because it draws a massive inrush current at startup — often 5-7 times its running amps…
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why does our air compressor trip the breaker every morning at startup
Your air compressor trips the breaker at startup because the motor's inrush current — often 5-7 times normal running amps — exceeds…
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Why does our CNC machine keep tripping the 20-amp breaker?
The breaker trips because the CNC machine draws more than 20 amps during startup or heavy cuts, possibly due to motor inrush…
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Why does our CNC machine trip the 200A breaker every morning at startup
Your CNC machine likely trips the 200A breaker at startup because its motor draws 6-8 times normal current during inrush, exceeding the…
See the fixWhy does our commercial building have a high power factor surcharge on the electric bill?
A high power factor surcharge means your equipment draws more reactive power than your utility allows, usually from motors, transformers, or old…
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Why does our commercial building have high demand charges on the electric bill?
High demand charges come from short spikes in power use — usually when large motors, HVAC, or compressors start simultaneously — that…
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Why does our commercial building's demand charge keep increasing even though usage is flat?
Your demand charge rises because your peak 15‑minute power draw is creeping up, even if total kilowatt‑hours stay the same; utilities bill…
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Why does our commercial building's electricity bill spike every summer even though production hasn't increased?
Summer bill spikes usually come from HVAC systems running longer to offset higher outdoor temperatures, combined with demand charges triggered by peak…
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Why does our commercial HVAC system run constantly after business hours?
Your HVAC runs after hours because the thermostat schedule is wrong, the economizer damper is stuck open, or a faulty occupancy sensor…
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Why does our commercial HVAC system run constantly after hours and spike our demand charges?
Your HVAC likely runs after hours because the thermostat schedule is misconfigured, the economizer is stuck open, or the building automation system…
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