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Commercial Case Studies

Office buildings, data centers, retail facilities, and commercial HVAC systems

Commercial buildings require reliable power distribution with minimal voltage drop to ensure equipment operates efficiently. Data centers have the most stringent requirements, often targeting less than 2% total voltage drop. HVAC systems, lighting, and critical loads all benefit from proper voltage drop engineering. These case studies show how commercial projects achieve optimal power quality.

data center powercommercial HVACoffice building electricalPDU designcritical powerretail electrical
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2 case studies in this category
CommercialTechnology

Data Center: Critical Power Distribution

Designing redundant power feeds for data center racks with stringent voltage tolerance requirements.

200
Racks
< 2%
Target Drop
1.8%
Achieved
Challenge

New data center build required power distribution to 200 racks with maximum 2% voltage drop to ensure stable operation of sensitive IT equipment.

Solution

Implemented 480V/277V distribution with PDUs at each row. Sized feeders for 1.5% drop maximum, used parallel 500 kcmil aluminum for main feeders.

Result

All rack positions receive voltage within 1.8% of nominal. Zero downtime related to power quality issues.

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CommercialHVAC

Office Building: HVAC System Upgrade

Retrofitting power feeds to new high-efficiency rooftop units in an existing commercial building.

6.2%
Before
1.1%
After
4 RTU
Units
Challenge

Replacing aging HVAC units with larger, more efficient models. Existing 8 AWG feeders inadequate for new 40A loads over 300ft runs.

Solution

Evaluated options: pull new 4 AWG conductors vs. installing sub-panel on roof. Sub-panel solution chosen for cost and voltage drop benefits.

Result

New rooftop sub-panel reduced effective run to 50ft. Voltage drop from 6.2% to 1.1%. Improved compressor efficiency and lifespan.

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Explore Other Categories

Residential

Home electrical projects including EV chargers, detached structures, and long circuit runs

1 case study

Industrial

Manufacturing facilities, motor feeders, and heavy industrial equipment

1 case study

Renewable Energy

Solar PV systems, wind installations, and battery storage projects

1 case study

Agricultural

Farm irrigation systems, remote pump stations, and agricultural equipment

1 case study

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