Seeing that Mr. Neeser has entered the fray I have a question for him or anyone else. I had a 750 va control transformer (208-120) with 2 fuseholders on primary side . One on each leg of 208volt. Sticker by fuseholder said to use Littelfuse FLQ-6 fuses. One of the fuses blew for whatever reason, Went to supply house to get some but the only had Bussman type FNQ-6 They said they were equal to FLQ. So put one in and all seemed fine. I now have 1 FLQ-6 and 1 FNQ-6 fuse in (BTW this was in Trane chiller) chiller ran about 30 hrs. and FNQ blew again. Replaced, ran another 30 hrs and blew again. Seemed like an intermitent problem on control circuit. To make short story long, replaced fuseholder, 2 trips by Trane rep ( who said to replace transformer which we did , no difference.) many blown fuses and pulled out hairs. In all this time we never blew the Littelfuse FLQ . Bussman FNQ-6 would blow nearly everytime we would power up transformer. Got more fuses, this time we got Littelfuse FLQ-6 fuses. Guess what ,fuse never blew again. Product literature suggests these two fuses are identical, Both made for high inrush current of transformers. Whats the difference? Bad batch of fuses or ?
Glenn
Charter member CQA
(convoluted questioners of america)
