NEC Low Voltage Definition
Understanding National Electrical Code voltage classifications for electrical systems
NEC Low Voltage Classification
According to the National Electrical Code (NEC), low voltage is defined as voltage that is 50 volts or less to ground.
NEC Voltage Classifications
- Low Voltage: 50V or less
- Medium Voltage: Over 50V to 1000V
- High Voltage: Over 1000V
Common Low Voltage Applications
- • Security systems (12V, 24V)
- • Fire alarm systems
- • Telecommunications equipment
- • LED lighting systems
- • Control circuits
- • Some automotive applications
Important Note
While NEC defines low voltage as 50V or less, many professionals in the electrical industry commonly refer to systems operating at 600V or less as "low voltage" in practical applications. However, the official NEC definition remains 50V or less to ground.
SwitchgearMFG Medium Voltage Expertise
While NEC low voltage systems operate at 50V or less, SwitchgearMFG specializes in medium voltage switchgear equipment, typically ranging from 1kV to 35kV. Our expertise lies in the higher voltage ranges that require specialized safety measures and robust engineering.
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