The Point of Fuses
Fuses are to protect wiring, correct? If that is really so then I have a question posed as an example. Suppose I have a 55 amp converter. It is connected to a bank of batteries with 4 ft of #4 wire. ~...
Forum Discussion
mena661 wrote:MEXICOWANDERER wrote:So in this case, you're saying that there could be more than 55 amps drawn on a 55 amp converter? If this is the case, then I finally understand.
What happens if the converter gets mad, and I mean really REALLY mad at you and throws a hissy fit? A direct short with 4AWG is awful, like battery exploding time. Yeah fuses are a pain but what they may protect against is infinitely worse. Remember, Kelly said Murphy was an optimist...
A group 27 battery can supply up to 5,000 amps to a solidly bolted fault. It's typical to design for a short circuit level of 65,000 amps for a 480V UPS battery pile.
Bruce
