flemdog186
Member
- Location
- Washington, DC
Greetings Forum, I have a high-rise building that I am evaluating. In 2007 half the building was renovated and the big electrical distribution was changed from conduit/wire to buss duct. Apparently because it was a renovation and the designers/contractors didn't want to rip out existing utilities, some of the new busway was installed under lots of sprinkler, plumbing, sanitary, telephone, etc. Needless to say, some of the buss duct is now failing. My question is: Was it code compliant to install this 1000 amp, 480 volt, buss duct and not have clearances as described in NEC 2005 110.26.A.3 Height Of Working Space? 110.26 starts off with:II. 600 Volts, Nominal, or Less
110.26.A.3 Height Of Working Space
"Sufficient access and working space shall be provided and maintained about all electric equipment to permit ready and safe operation and maintenance of such equipment. Enclosures housing electrical apparatus that are controlled by a lock(s) shall be considered accessible to qualified persons."
- the buss duct is top access and in many cases there is only a one foot below parallel pipes or ceiling. Any Thoughts?
110.26.A.3 Height Of Working Space
"Sufficient access and working space shall be provided and maintained about all electric equipment to permit ready and safe operation and maintenance of such equipment. Enclosures housing electrical apparatus that are controlled by a lock(s) shall be considered accessible to qualified persons."
- the buss duct is top access and in many cases there is only a one foot below parallel pipes or ceiling. Any Thoughts?