drawing 15 amps-Blowing 30 amp fuse

[dlynds]

I am mystified. I have a 4 cell config. drawing a total of 15 amps. Vehicle is a 2007 malibu V6. Idling cold, the units draw 15 amps, but after about 3-5 minutes, the amps spike and blow a 30 amp fuse or trip my 30 amp circuit breaker.
There are no shorts, and I have measured the draw at the circuit breaker (both sides), the relay, and at the electrolyzers.
I just upgraded my battery to a 775 amp hr from a 575.
I somehow think that I am getting a spike when the alternator kicks in, but I am not an electrician.
My wiring is 10 gauge awg.
Without a fuse or circuit breaker, I can run the unit for an hour without a problem and the amp draw creeps up to about 25 amps.
Any input on this problem would be greatly appreciated.

[Painless]

Have you attached an ammeter to determine if the amps are actually spiking that high when this happens? If so, what do you see? A sudden spike or a slow rise to that ampage?

[JonDoh]

a plate may be making contact with one another because of the gap distance. That's what was my experience.

[dlynds]

The ammeter spikes hard right, then the fuse blows. I tried each cell individually, and no problem. I also hooked up to my wifes car, and no problem.

[ridelong]

dlynds,

You might have a voltage regulator going bad.

Use a voltmeter to measure the voltage across the generator. If it goes much above 14.2 volts, the voltage regulator is probably going bad.

[JonDoh]

awww... you have a 4 cell.... what's your config??

Are there any neutral plates?

[DaneDHorstead]

Is it mummy wrapped?

Many people tend to use vinyl streatch wrap, or electrical tape to mummy wrap.

Vinyl shrinks dramaticly, when heat is applied, which can pull plate edges together, shorting cells.

[solo33]

Hi dlynds,
I still have my HHO setup on the bench. MY unit will do the same thing, Blow 30 amp fuses while the generator is only pulling 15 amps. This is while connected a 35 amp voltage/current regulated power supply. It has never happened while I was watching it. Now, I built a "Zero PWM w/foldback current regulation to stop the thermal run-a-way problems all (that I know of) HHO generators have (as they get hotter, they draw more current, which makes them get hotter). So, I'm still in the dark about the fuse blowing. I was hoping the problem would go away when installed it into my car, but I guess not! I'll be curious what you find out. Please keep us posted. Thanks.............

[atfab]

dlynds,
You may have posted your own solution, It sounds like the problem is in your fuse or circuit breaker hookup. There may be a poor connection or defective breaker.

Try putting them back in, but only one at a time , not both at the same time.

[dlynds]

Tried them individually, and still blows them.