Editorial approach
Articles separate established engineering principles from site-specific judgment, cite primary or authoritative sources where practical, state safety boundaries, and avoid presenting general information as a substitute for qualified engineering work.
Coverage
- Power systems
- High and low voltage
- Transformers
- Protection and control
- Motors and automation
- Renewables and storage
- Safety and standards
Latest from MAX

What Is an Arc Flash Study, and Why Do You Need One Now?
An arc flash study—more precisely, an incident energy analysis—models an electrical system to estimate the thermal energy a worker could receive at a defined working distance and to…

CT and VT Selection Best Practices
Current transformer (CT) and voltage transformer (VT) selection begins with the connected function: revenue metering, indication, protection, control, disturbance recording, or a combination. From there, match system voltage…

Selecting the Proper VFD
The proper variable frequency drive (VFD) is selected by matching the complete application—not simply the motor’s power rating. Start with the load’s torque–speed profile and operating cycle, then…

Troubleshooting Voltage Sags and Swells
Voltage sags and swells are best troubleshot as timed system events, not as isolated voltage readings. First verify that an event occurred with a suitable power-quality instrument. Then…
