We bring clarity to your electrical infrastructure with precise, up-to-date one-line diagrams — the foundation of every safe and efficient power system. Whether you need new documentation or updates to your existing drawings, our experts deliver accurate, code-compliant diagrams that keep your operation safe, efficient, and audit-ready.
What Is a One-Line Diagram?
A one-line (single-line) diagram is a simplified, visual representation of your facility’s electrical system — showing how power flows from the source to every panel, breaker, and load.
It’s an essential tool for:
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System planning and maintenance
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Arc flash and coordination studies
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Troubleshooting and safety training
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Regulatory compliance (NFPA 70E, OSHA, NEC)
When your one-line diagram is accurate and current, your team works safer, smarter, and faster.
Our Services
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Creation of new one-line diagrams for new builds, expansions, or system documentation
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Field verification and data collection to ensure accuracy
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Updates to existing drawings after equipment changes or upgrades
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Digital conversion of old paper diagrams to CAD or PDF
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Integration with arc flash studies and labeling projects
Every project is completed by experienced electrical engineers and designers using advanced CAD software and industry best practices.
Why Choose Infra-Red?
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Accuracy you can trust — verified directly in the field
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Compliance guaranteed — NFPA 70E, NEC, OSHA standards
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Fast turnaround with clear, professional documentation
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Seamless updates that evolve with your facility
Power Systems You Can See and Understand
An up-to-date one-line diagram is more than a drawing — it’s your roadmap to a safer, more reliable electrical system.
Contact us today to schedule a site assessment or request a quote for one-line diagram updates.