No Spike Fuses

[uncledj]

I was out in Zanesville, OH today helping to replace a compressor in a rooftop HVAC unit. I don't typically work out that way, but the job required a second guy to get the compressor onto the roof and set in the unit.

The guy who wrote it up for replacement forgot to order new fuses to replace the ones that'd blown when the failed compressor shorted, and, being in his stomping grounds, suggested a local supply house to get new ones.

We needed 3 but figured we'd get 6 and leave the spares there. I told the counter guy I needed 6 FRSR30 fuses. He said he only had the "no spike" style. I thought that was a bit odd. I assumed that by "no spike" he meant "fast blow" which aren't meant for motor loads, as a motor will easily draw twice it's normal amperage during startup....for a second or two....before settling down to it's normal running amp draw.

Since I'm not used to seeing fast blow fuses at the supply houses we frequent, I told him to bring them out so I could look at them....I thought he may be mistaken....and this is what he brought out....

[Hummingbird]

Well, I dont see a spike in the end. I guess he was correct but I do believe them to be just a tad longer than the disconnect will accept and I can't see how they will pass current but then I'm not an hvac mechanic.

[mraf]

Cut'em down and make em work. Just stand back.

[Flyinfool]

So make your own slow blow fuses. Just need some copper tubing cut to length.

That is actually how the maint guy at work got the fuses o the CNC machines to stop blowing.

[uncledj]

So make your own slow blow fuses. Just need some copper tubing cut to length.

That is actually how the maint guy at work got the fuses o the CNC machines to stop blowing.

Yeah, I did something like that when I was a teenager. I had a fuse that kept blowing in my 73 Vega, so I cut a 1/4" bolt and put it in the fuse holder. Car turned into a fireball in the school parking lot. Learned my lesson on that one.

[Flyinfool]

There was a Darwin award issued for a red neck that used a 22 long as a fuse in his pickup. It got hot enough to fire and got his femoral artery. Then he crashed the truck..................

[bongobobny]

Looks like sticks of dynamite or road flares...

[Hummingbird]

Looks like sticks of dynamite or road flares...

 

 

Yeah, they're fusee's - the clerk evidently mistook fuses for fusee's. I think they are called flares now but they used to be called FUSEE's

 

oooops, guess my age is showing

[RedRider]

There was a Darwin award issued for a red neck that used a 22 long as a fuse in his pickup. It got hot enough to fire and got his femoral artery. Then he crashed the truck..................

 

But his wife recovered the frogs they had gigged earlier.

 

RR