The Leviton load center enclosures, including models LP2xx, LP3xx, and LP4xx, are designed for the installation and distribution of electrical power. These enclosures are intended for use by qualified electricians and require adherence to specific safety instructions and installation procedures. The documentation emphasizes the importance of disconnecting power before any work is performed and highlights compatibility with both 120/240V and 120/208V systems. Installation options include surface mounting and flush mounting between studs, with provisions for both alignment and secure attachment to walls.
Safety Precautions
Prior to installation, removal, or servicing of Leviton load center equipment, it is imperative to turn off the power supply and confirm that the power is indeed off. This precaution is repeatedly emphasized in the provided documentation as a critical safety measure to avoid fire, shock, or death. The equipment must be installed and serviced exclusively by a qualified electrician. All doors and covers must be replaced before power is reconnected to the equipment. Installation and use must comply with all applicable electrical codes and regulations.
Enclosure Knockout Removal
Before commencing installation, it is necessary to consult local electrical codes to determine the appropriate knockout requirements. Knockouts (A) are designed for removal to accommodate wiring. The process involves striking the center of the knockout, then using pliers to grip and bend the retaining rings (B) until they disconnect from the enclosure. This allows for the passage of electrical conductors.
Mounting Options
Leviton load centers offer flexibility in mounting configurations. The enclosures can be inverted for bottom feed applications. Two primary mounting methods are detailed: surface mounting and flush mounting.
Surface Mounting
Surface mounting utilizes keyholes (C) located at the top and bottom of the enclosure to aid in alignment and leveling. Temporary screws or nails (not provided) can be used in these keyholes during the alignment process. Four precut mounting holes (D) are available on the back of the enclosure for secure attachment to the wall using screws or nails (also not provided). Once the enclosure is aligned and leveled, the temporary fasteners used in the keyholes should be removed.
Flush Mounting
Flush mounting is designed for installation between wall studs. Four mounting slots (E) are precut on the sides of the enclosure to facilitate this type of installation. Foil tape (F) on the side of the enclosure must be pierced with a mounting screw or nail to allow for attachment. When using ½ inch sheetrock, alignment can be achieved by aligning the embossed (1/2) line on the enclosure with the sheetrock edge.
Load Center Features and Components
Leviton load centers are compatible with Leviton Surge Protective Breakers, which can be installed in any breaker location to provide whole-panel surge protection and overcurrent protection. These breakers also offer a visual indication of their protection status. The documentation references a 30-space Paint Shield feature and a 2-pole breaker with an "N" designation to indicate the neutral wire connection point.
Panel Schedules and Documentation
Leviton provides panel schedules for its load centers. A standard panel schedule ships with each load center. Alternate panel schedules are included with window doors/covers. Additional panel schedules, compatible with various indoor panel sizes and door types, are available for purchase in bulk packs or as downloadable .PDF files from the Leviton website. A temporary circuit directory is supplied on the Paint Shield.
Wiring Considerations
Neutral wires must be terminated at the circuit breaker for all smart and safety breakers (AF, GF, EP, Dual). However, terminating neutral wires at the circuit breaker is also recommended as the preferred method for all circuits. For 2-pole breakers rated at 60A or lower, the neutral wire must be connected.
Warranty Information
Leviton offers a limited product warranty. Details regarding the warranty can be found on the Leviton website (www.leviton.com) or by calling 1-800-323-8920.
Technical Assistance
Technical assistance is available at 1-800-824-3005 (USA) or 1-800-405-5320 (Canada). The Leviton website (www.leviton.com) also provides resources and support.
Patents
Leviton notes that patents covering its products may be found on its website at Leviton.com/patents.
Conclusion
The Leviton load center enclosures provide a means for safe and reliable electrical power distribution. Proper installation, adhering to the provided safety guidelines and local electrical codes, is crucial. The documentation highlights the importance of qualified electricians performing the installation and servicing of these devices. The availability of various mounting options and features like surge protection breakers contribute to the versatility of these load centers.