From: rcres@XXnewsguy.com   
      
   "J.B. Wood"  wrote in message   
   news:m4vnvn$fhl$1@ra.nrl.navy.mil...   
   > On 11/24/2014 10:04 AM, Rich. wrote:   
   >>   
   >> "J.B. Wood"  wrote in message   
   >> news:m4vect$fcc$1@ra.nrl.navy.mil...   
   >>> Hello, all, and a fuse question for a practicing electrician (or   
   >>> anyone in the know):   
   >>>   
   >>> Assuming a residential branch circuit is fused for 125 volts, 30 amps   
   >>> and the fuse box accepts the rejection base ("S") fuse, how   
   >>> interchangeable are the 30 amp "D" dual element time delay (has the   
   >>> spring loading) and the 30 amp "SL" time delay types?  Thanks for your   
   >>> time and comment. Sincerely,   
   >>> --   
   >>> J. B. Wood             e-mail: arl_123234@hotmail.com   
   >>   
   >>   
   >> The fuses themselves are identical in their operation. The only   
   >> difference is the Type D screws into the standard Edison base fuse   
   >> holder, while the SL fuse needs the base adapter screwed into the Edison   
   >> base first, then the fuse screws into the adapter.   
   >>   
   > Hello, and many thanks for the prompt reply.  Unless I'm mistaken, the   
   > types of plug fuses that I referred to have identical footprints; i.e.,   
   > they are both rejection base types.  Either one could presumably be   
   > screwed into the 30-amp rejection receptacle in the fuse box. (There is a   
   > type D TC fuse with an Edison base but that's not the one I meant)   
   >   
   > So the question seems to be the difference between having or not having   
   > the "dual" time delay capability.  Sincerely,   
   >   
   > --   
   > J. B. Wood             e-mail: arl_123234@hotmail.com   
      
   Time delay fuses with the spring blow faster than dual element fuses. Is   
   that what you're looking to find out?   
      
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