Electric and Communication room drawing shows HVAC chill water piping and FCU in Electric room and Communication room. Please advise me about the installation, if the pipes are through room and may be running above the control panels.
Based on your information, NFPA-70 (NEC 2011) 110-26 spaces about electrical equipment. Section 110-26 (I) subsection (b) foreign systems, the areas above the dedicated space required by 110-26 (E) (1) (a) shall be permitted to contain foreign systems, provided protection is installed to avoid damage to the electrical equipment from condensation, leaks or breaks in such foreign systems.
Hope this helps...
I have had this issue on some projects if you can not get the services moved out of the space, couple of options:
1. If you catch this issue during design or before the pipes are installed put the chilled water pipes or any pipe carrying liquids (water, roof drains, sanitary, etc) pipes inside a continuous pipe that runs through the electrical or communication rooms so if there is a leak the water drains outside the room to a drain outside the room.
2. If the pipes are installed before you catch this issue install a solid bottom and solid sided trough under the pipe with a drain outside the room and a water detection sensor in the trough tied to an alarm system that is monitored.
3.Try to keep any valves, sewer pipe clean outs or system drains for the pipes out of the electrical or communication rooms at all costs.
If you choose (or are forced) to use a trough under the pipe, make sure that the trough drain is not hard piped into the building drains. Make sure that there is an air gap in the drain piping so that a drain backup can't flow all the way back to the trough.
(The voice of a bad experience!)
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