There is a term that may apply here, that is usually reserved for hazardous chemical concentrations. IDLH, meaning “Immediately Dangerous to Life or Health.” It sounds like you may well have a circumstance that warrants use of that term for an electrical installation.
One comment to add to already excellent advice. Be careful. An undesirable repercussion, depending on ownership of the air conditioners, is that the building owner may remove or demand their immediate removal from service.
[This message has been edited by Bjarney (edited 07-04-2002).]
