Quick provari question.

[edyle]

I'm using a brand new efest 18350 with a kayfun at 1.4 ohm's. The end cap gets a tad warm. Is this normal? I'm I'm a trial run of sorts with it, I've got it on the classifieds but I'm debating on a future provari purchase., I have not owned it for more than a few days, and beforehand never gave a vv only device much thought.

I'm also wondering if a fuse is necessary. I know it's protected by the on board chips, but considering I have 7 mechs in heavy rotation, the fuse was second nature.

Thanks everybody

Sent from my XT1028

Sounds like you put a fuse in your provari????

Sounds to me like the fuse is what's getting warm.

 

[edyle]

I have to disagree. That is IF the fuse is just a fuse. Fuses don't have resistance, or they shouldn't have any resistance. The just break if the amp limit is surpassed.

A fuse has a resistance; that's how they work; that is how they get hot enough for them to melt if the current is too high.

 

[Alter]

I've been using both AW and Efest batts in our Provari's and never has anything got hot or even warm.
I don't like using 350's for regular use cause they do get hot and heat up the switches in some of my mechs, my k100 is the best example of the switch getting uncomfortable warm while I was using 350's. I have no issues when using 500's or 650's but that was with 1.4 ohm coils. That battery is going to get warm if your pushing its limits with your build and IMO 350 batteries are more when you know your going to stealth vape and take a small PV. I don't have a vapefuse but use kicks so didn't have any use for a fuse.
I build 6 wrap 30 gauge 1.4ohm coils in my protanks, so with lower ohm coils and thats low enough to put a good strain on 350 batts and heat them up some.

 

[DaveP]

A fuse has a resistance; that's how they work; that is how they get hot enough for them to melt if the current is too high.

While the fuse may show some low level of resistance on higher VOM ranges, it's not the resistance that makes it blow. The fuse element is made of a low resistance metal designed to melt at a designated level of current flow. It's designed to only be able to withstand a certain amount of current flow before it melts and opens. Checking a fuse is just a matter of putting the VOM on an Rx1 range and checking for continuity vs open. They get hot because the element can't take the volume of electrons flowing through the wire and creating their own heat due to friction.

 

[edyle]

While the fuse may show some low level of resistance on higher VOM ranges, it's not the resistance that makes it blow. The fuse element is made of a low resistance metal designed to melt at a designated level of current flow. It's designed to only be able to withstand a certain amount of current flow before it melts and opens. Checking a fuse is just a matter of putting the VOM on an Rx1 range and checking for continuity vs open. They get hot because the element can't take the volume of electrons flowing through the wire and creating their own heat due to friction.

1: a low resistance metal. - you don't think it's lower than copper ? Right?
A fuse is usually made of very thin gauge wire so that the wire gets hot (due to the resistance of the wire).
It can't be high resistance; obviously you want a wire that does not interfere too much, but it does work by resistance.

2: They get hot because the element can't take the volume of electrons flowing through the wire and creating their own heat due to friction

Yeah;;; that's like the ... definition of what electrical resistance is.

 

[Shootist]

A fuse has a resistance; that's how they work; that is how they get hot enough for them to melt if the current is too high.

Right, My bad. But the resistance is so low that it should not cause a heat buildup. At least not enough to make the PV bottom cap to heat.

 

[Underwhelmed]

OP has "Moved On", but hopefully he got the info/help he needed first.