Eaton’s Cutler-Hammer assembled panelboards are designed for sequence phase connection of branch circuit devices. This allows complete flexibility of circuit arrangement (1-, 2- or 3-poles) to allow balance of the electrical load on each phase.
Sturdy, rigid chassis assembly assures accurate alignment of interior with panelboard front; prevents flexing and minimizes possibility of loosening or dam- age to current carrying parts during and after installation.
Four point in-and-out adjustment of panel interior is provided to meet critical depth dimensions on flush installations. This compensates for possible misalignment of box at installation.
Main lugs are mechanical solder-less type and approved for copper or aluminum conductors.
Panelboard Selection Factors
In selecting a panelboard, the following factors must be considered:
- Service (voltage and frequency)
- Interrupting capacity (fully or series rated)
- Ampere rating of main
- Ampere ratings of branches
- Installation environment
Enclosure Box (Can)
- Boxes are code-gauge galvanized steel except for column type panelboards which include a painted box finished in ANSI-61 light gray to match the trim.
- Standard panelboard cabinets are designed for indoor use. Alternate types are available for indoor and special purpose applications.
- All enclosures are furnished in accordance with Underwriters Laboratories, standards and include wiring gutters with proper wire bending space. Special cabinets can be provided at an additional charge.
- The box dimensions shown are inside dimensions. For outside dimensions, add 1/4-inch (6.4 mm).
- Standard panelboard boxes are supplied without knockouts (blank endwalls).
Enclosure Fronts (Trim)
- Fronts for all panelboards are made of code-gauge steel and have a high durability ANSI-61 light gray finish applied by a baked-on polyester powder coating paint system.
- The fronts for lighting and appliance branch circuit panelboards and small power distribution panelboards include a door with rounded corners and concealed hinges that allow a 130- degree door swing. A flush-type latch and lock assembly is included. All locks are keyed alike. These trims are available in both surface and flush mounted designs.
Panelboard Standards
All Cutler-Hammer panelboards are designed to meet the following applicable industry standards, except where noted:
-
Underwriters Laboratories, Inc.
- Panelboards: UL 67.
- Cabinets and boxes: UL 50.
Note: Only panelboards containing UL listed devices can be UL labeled.
- National Electrical Code
- NEMA Standards: PB 1
- Federal Specification W-P-115c
- Circuit breaker – Type I Class 1
- Fusible Switch – Type II Class 1
Panelboard Seismic Qualification
Cutler-Hammer panelboards are seismically tested, seismically qualified, and exceed requirements of the Uniform Building Code (UBC), California Code Title 24 and BOCA.
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