The rules covering GFCI protection in wet/damp locations as well as for portable/temporary power applications are rather extensive and detailed. A condensed version of these rules appear below.
Manual Motor Controllers and Safety Disconnect Switches
Leviton AC Manual Motor Controllers are Listed to UL 60947-4-1 (supersedes UL 508) and provide safe, reliable ON/OFF control of individual motor loads. These devices are also listed “Suitable as Motor Disconnect”, which allows them to cut power for equipment servicing and are designed to withstand motor overloads and higher short circuit currents than conventional manual motor controllers.
Our non-fused enclosed rotary safety disconnect switches are also Listed to UL 60947-4-1 and “Suitable as Motor Disconnect”, while the fused versions are Listed to UL 98 for use in disconnecting branch circuits.
Codes & Standards
OSHA 1910, Subpart S - Electrical
1910.303(f)(4) – General
- Disconnecting means shall be capable of being locked in the open position
1910.305(j)(4) – Wiring methods, components, and equipment for general use
- A disconnecting means
- …shall be provided for each controller…located within sight of the controller location…
- …shall disconnect the motor and the controller from all ungrounded supply conductors...
- …shall plainly indicate whether it is in the open (off) or closed (on) position…
2017 NFPA 70 Article 430: Motors, Motor Circuits & Controllers
430.102(A) – Disconnecting Means Location: Controller
- An individual disconnecting means shall be provided for each controller…shall be located within sight of the controller location
430.102(B)(1) – Disconnecting Means Location: Motor
- A disconnecting means for the motor shall be located in sight from the motor location and the driven machinery location
430.103 – Disconnecting Means Operation
- The disconnecting means shall open all ungrounded supply conductors and shall be designed so that no pole can be operated independently
2018 NFPA 70E: Electrical Safety in the Workplace
Article 120.3(A) – Lockout/Tagout Equipment
- Energy isolation devices for machinery or equipment installed after January 2, 1990 shall be capable of accepting a lockout device
Leviton Solutions
These devices will help you meet the provisions specified by OSHA, NFPA 70E: The Standard for Electrical Safety in the Workplace, and NFPA 70: The National Electrical Code (NEC).
Powerswitch® Manual Motor Controllers
- 30 A, 40 A, and 60 A, 600 V ratings; single- and three-phase
- Also available in Type 1, 3R, and 4X enclosures
- Enclosures contain provisions for compliance with LOTO programs
Powerswitch® Safety Disconnect Switches
- 30 A through 100 A, 600 V ratings; single and three-phase
- Fused and unfused versions
- Available in stainless steel or non-metallic enclosures that are watertight, dust-tight, and NSF Certified
- Handle accommodates 3 padlocks to meet OSHA 1910.147 lockout/tagout requirements
