Subject: What is the optimal relative humidity of a room containing electronics?

I work with many rooms full of electronic equipment, some with 
High Voltage.  I am concerned that we may not have the humidity 
level at an appropriate level.  If it's too low, it may cause 
undue electro-static shock and damage equipment or personnel.  
If it's too high, it may cause undue corrosion to the 
equipment.  I need to find a range to operate in, and more 
importantly than that, something to refer everyone else to as 
THE standard.  I also wondered if the static danger humidity 
level might vary with temperature.

Re: What is the optimal relative humidity of a room containing electronics?