From: peterwieck33@gmail.com   
      
   Charles:   
      
   One more try. And I will try not to be snarky. This is a discussion group with   
   a focus on problem-solving with an electronics emphasis. It is also, perforce,   
   done at at distance. Often the initiator of a discussion is not only on   
   another continent, but    
   also subject to different codes, a different environment, and often very   
   different basic systems. Given that this venue is also frequented by those   
   passing as, or attempting to pass as human, with all the associated foibles,   
   peculiarities, assumptions    
   and backgrounds (good, bad and indifferent), there will be the occasional   
   outlier when it comes to advice given.    
      
   Generally, >I< attempt to:   
   a) understand the question.   
   b) understand the asker's purpose for the question.   
   c) attempt to clarify my understanding if not immediately clear.   
      
   Note, I write ONLY for myself. I do not write HOLY WRIT, although I try to be   
   reasonably apt in my advice. And in most aspects of things discussed here,   
   there are many who are vastly more experienced than I.    
      
   With all that in mind, only then will I offer advice, and only then to the   
   extent that it is (in my experience/opinion) useful. I was not being snarky at   
   all when I wrote:  "... that this venue exists to provide overly complex   
   solutions to simple    
   problems after extensive discussions of picayune and irrelevant issues."  That   
   is one of the side-effects of Usenet - that there are those who feel it   
   necessary to not only address the nits, but pick at them as well.    
      
   >>So. Let's start with the OP:   I have an whole house fan and I want to put a   
   fire shutoff device above   
   >>it that would in-line wire power to the fan but I do not know what they   
   >>are called or where to find them.   
      
   At the present moment, I work in a 600,000 s.f. (557,740 s.m.) medical   
   research facility that is 100% fresh air throughout. So, whereas there no true   
   return-air fans, but exhaust fans. Each one of them (14 in total) has an   
   in-duct smoke detector that    
   will shut it off should it trip. It will _ALSO_ shut off the associated   
   air-handler. The system as a whole moves 46,200,000 c.f. (1,308,238 c.m.) of   
   air per hour (7 changes, on average). Altogether, even if a 50-year-old   
   system, pretty sophisticated and    
   within current codes. So, yes, I understand the wish behind the OP's request.   
   And even though this is a BIG system, I have worked with smaller systems as   
   well. And installed any number of related systems either as an owner, or   
   holding the tools for    
   another owner. So, I tried to give a relatable, simple, and directed answer.    
      
   I am as good as the next guy at vituperation. And at least as snarky. I admit,   
   even, to enjoying the wordplay when the opportunity presents. In your case,   
   however, you are putting yourself in harm's way - however sincerely - by   
   flying off on tangents and    
   not 'stopping'  while on those flights. Nobody here minds extraneous   
   discussions, but with the expectation that, somehow, they are a natural   
   outflow of the thread, a thread of their own, or similar. But when one sees   
   upwards of several dozens of posts    
   comingling fly-poop with pepper and discussing the grain-size of same, hence   
   the "... venue exists...." line.    
      
   Nor does anyone mind inquiring about old posts. On occasion, I have updated my   
   own reporting long-term results of a procedure, as that may be relevant to   
   some.   
      
   It is "Aim. Ready. FIRE!".  Not "FIRE!, Ready, Aim.   
      
   Peter Wieck   
   Melrose Park, PA    
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)