|  | 8.2 | Planning Structured Cabling: Wiring Closet Specifications
| 8.2.5 | Temperature and humidity
The wiring closet should include sufficient HVAC to maintain a room temperature of approximately 21° C, when all LAN equipment is in full operation. There should be no water or steam pipes running through or above the room, with the exception of a sprinkler system, which may be required by local fire codes. Relative humidity should be maintained at a level between 30%-50%. Failure to adhere to these particular specifications could result in serious corrosion of the copper wires that are contained within the UTP and STP. Such corrosion would deter efficient functioning of the network.
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