Writing the Enclosure Specification

Specifying Manufacturer

Specifying catalog numbers ensure certain features are maintained, or at least illustrated, for those quoting and supplying the product. This also establishes the quality grade from one of the manufacturers being named that could be transferred through to other pre-qualified manufacturers who you deem of equal stature.

Acceptable Manufacturers are:
  1. Hammond Manufacturing 
2. ... 
3. ...

Generic Description Templates

1. Commercial NEMA Type 1 Enclosures - Junction Boxes, Pull Boxes, Splitter Boxes and Troughs

Junction, pull and switch boxes for general purpose, indoor commercial use:

  • Must carry CSA, UL or cUL label and meet NEMA/EEMAC classification
  • Formed and spot welded from 12, 14 or 16 gauge steel
  • Screw cover or hinged cover
  • Finished in ASA 61 gray powder coating

Splitter boxes and troughs for indoor distribution of up to 600 amp service:

  • Must carry CSA, UL or cUL label and meet NEMA/EEMAC classification
  • Accommodates either 3 or 4 wires
  • Formed and spot welded from 14 or 16 gauge steel, including factory installed splitter blocks
  • Finished in ASA 61 gray powder coating

2. Commercial Outdoor NEMA Type 3R - Enclosures

General purpose outdoor enclosures are intended for surface mounting and will be of the following minimum standard:

  • Must carry CSA, UL or cUL label and meet NEMA/EEMAC Type 4X classification (as required)
  • Formed and welded from 12, 14 or 16 gauge steel (preferably galvanized steel)
  • Finished in ASA 61 powder coating

3. Industrial NEMA Type 12, 4, 4X - Enclosures and Cabinets

Mild Steel Construction

Enclosures are intended for surface mounting and will be of the following minimum standard:

  • Must carry CSA, UL or cUL label and meet NEMA/EEMAC Type 12 or 4 classification (as required)
  • General construction shall be of sheet steel with all welds to be continuously finished smooth, free of all burrs, scale and imperfections
  • Shall be stiffened to prevent any deformation or bowing during installation and after components are mounted
  • All doors are to be formed flush fitting with all welds ground smooth
  • Latching as specified with seamless, permanent gasket installed
  • Supply print pocket for documentation
  • Internal mounting panel

Stainless Steel Construction

Enclosures are intended for surface mounting and will be of the following minimum standard:

  • Must carry CSA, UL or cUL label and meet NEMA/EEMAC Type 4X classification (as required)
  • Unless otherwise specified material to be type 304 or 316 with a brushed finish, depending on application, with all hardware of the same or higher grade
  • General construction shall be of sheet steel with all welds to be continuously finished smooth, free of all burrs, scale and imperfections
  • Shall be stiffened to prevent any deformation or bowing during installation and after components are mounted
  • All doors are to be formed flush fitting with all welds ground smooth
  • Latching as specified with seamless, permanent gasket installed
  • Supply print pocket for documentation
  • Internal mounting panel

Fiberglass Re-inforced Polyester Construction

Enclosures are intended for surface mounting and will be of the following minimum standard:

  • Must carry CSA, UL or cUL label and meet NEMA/EEMAC Type 4X classification (as required)
  • Manufactured of fiberglass-reinforced polyester with all stainless steel hardware and padlocking provision
  • Internal mounting panels will be supported by reinforced fittings