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Post by inhabor on Jun 18, 2019 0:59:38 GMT
I installed a Renogy DC to DC battery charger to charge my lithium phosphate batteries. The manual recommended to install a 40 amps braker between the charger and the car battery. The problem that I'm having is that after a few minutes of using the charger it trips the braker. Any idea why. The distance between the battery and the charger is less tha than three feets and the wires are #2 gauge.
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Post by Admin on Jun 18, 2019 15:44:57 GMT
I installed a Renogy DC to DC battery charger to charge my lithium phosphate batteries. The manual recommended to install a 40 amps braker between the charger and the car battery. The problem that I'm having is that after a few minutes of using the charger it trips the braker. Any idea why. The distance between the battery and the charger is less tha than three feets and the wires are #2 gauge. We would recommend to use a slightly higher fuse. The output of the 40A DC to DC Charger will be 40A, so the 40A will pop. -Renogy Team |
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Post by inhabor on Jun 18, 2019 21:11:14 GMT
I installed a Renogy DC to DC battery charger to charge my lithium phosphate batteries. The manual recommended to install a 40 amps braker between the charger and the car battery. The problem that I'm having is that after a few minutes of using the charger it trips the braker. Any idea why. The distance between the battery and the charger is less tha than three feets and the wires are #2 gauge. We would recommend to use a slightly higher fuse. The output of the 40A DC to DC Charger will be 40A, so the 40A will pop. -Renogy Team How much higher? It has to be a fuse not a braker? By the way this thing is awesome when it works. |
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Post by tattoo on Jun 18, 2019 21:28:30 GMT
How much higher? It has to be a fuse not a braker? By the way this thing is awesome when it works. Fuse, breaker they do the same thing...... One you can reset the other you throw away......
Go with a 50a...........
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Post by Admin on Jun 18, 2019 21:43:00 GMT
We would recommend to use a slightly higher fuse. The output of the 40A DC to DC Charger will be 40A, so the 40A will pop. -Renogy Team How much higher? It has to be a fuse not a braker? By the way this thing is awesome when it works. 45A or 50A would suffice just fine. -Renogy Team |
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Post by inhabor on Jun 18, 2019 22:13:28 GMT
Thanks guys
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Post by Rouel on Jun 23, 2019 15:52:36 GMT
I would think it would depend on the quality of the circuit breaker, and other factors, like how close to amps your system is performing. Had a similar issue, 40 Amp circuit breaker, current gradually increasing to 25 Amp over 2 hrs, after about 40 min at 25 Amp, would get hot and trip. As you can see, 25 Amps is pretty far from 40 Amps. Went to 50 Amp breaker, same thing, heat can trip breakers. If heat was tripping your breaker, a small fan blowing on it can help to reduce heating and stop tripping the breaker. That worked for me, but I didn't like that solution. So used two 30 Amp fuses in Parallel.
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Post by inhabor on Jun 24, 2019 0:24:39 GMT
I replaced the 40 amps braker for a 50 and is working fine so far.
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Post by tattoo on Jun 24, 2019 0:50:48 GMT
I replaced the 40 amps braker for a 50 and is working fine so far. You should be just fine....... |
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Post by tattoo on Jun 24, 2019 0:54:45 GMT
As you can see, 25 Amps is pretty far from 40 Amps. Went to 50 Amp breaker, same thing, heat can trip breakers. If heat was tripping your breaker, a small fan blowing on it can help to reduce heating and stop tripping the breaker. That worked for me. If the heat is tripping your breakers you need to find a new cooler place for your solar system... It's putting stress on everything else you can count on it.... |
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Post by Rouel on Jul 4, 2019 16:28:01 GMT
As you can see, 25 Amps is pretty far from 40 Amps. Went to 50 Amp breaker, same thing, heat can trip breakers. If heat was tripping your breaker, a small fan blowing on it can help to reduce heating and stop tripping the breaker. That worked for me. If the heat is tripping your breakers you need to find a new cooler place for your solar system... It's putting stress on everything else you can count on it.... Tattoo thanks fur your response. The breaker is in an ambient temperature environment, away from heart sources. The wires away from the breaker are cool to the touch. I suspect it's the quality of the breakers, they heated up. Not all 40A and 50A circuit breakers are created equal. OP appears to be happy, that is good !! |
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