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fire prevention
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  1. Lighting Design
    In our project we need to have fire rated enclosures for downlights. This did not pose a problem inside, but we also have four outside bay windows. For structural support we sistered on to the existing ceiling joists, which meant we could no longer fit the standard fire enclosures between the...
  2. Canadian Electrical Forum
    I'm doing some light fixture replacements in a small commercial building. The wiring is old and surface mounted,(plus has no viable ground conductor), so I am putting in some NMD 90 above the plaster ceiling. The situation is that there are at least four separate businesses that share a common...
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