« Illuminations « Tips by Type

Ceiling Lamps

Standard installation is hard-wired directly in an electrical junction box (j-box), please contact us for a non-traditional installation.

Specification tips for ceiling fixtures:

  • Review sprinkler head locations.
  • Specify voltage requirements 120-volt or 277-volt system.
  • Fluorescent bulbs are used for the 277-volt single phase.
  • This system can provide an overall savings of 40% to 45% when compared with a system using separate transformers for power and lighting.
  • Incandescent bulbs cannot be used with 277-volt system.

Review installation requirements:

  • When specifying large chandeliers review door openings:
  • Before selecting the fixture, always determine the size of the doorways that the fixture will go through and note restrictions on specs. Also note size restrictions on loading docks, freight elevators, and entry to the installation area.

Consider relamping requirements—removable bottom acrylics often allow for simple future relamping.

Mounting details:

  • Check the ceiling height of the space to determine proper mounting applications. Typically, the bottom of the fixture must yield at least 8 feet above finished floor.
  • Solid rod, stem, or cable can be specified. However, use of a solid rod or stem will make field adjustment difficult if the specified ceiling height changes during construction.
  • Cable or chain is recommended when the ceiling height is unknown.

Canopy requirements:

  • Lightweight fixtures (50 lbs or less) require mounting directly to a junction box with (2) 8-32 mounting screws into finished ceiling.
  • Medium-weight fixtures require a 3/8" threaded rod secured to the above existing structure and must extend 1" below finished ceiling.
  • Heavyweight fixtures require a 1/2" threaded rod secured to the above existing structure.
  • Fixtures that span long distances require multiple threaded rods.