Forum Discussion
wa8yxm
Jun 09, 2013Explorer III
aruba5er wrote:
In all my years as an electrician, I preferred fuses. They are cheaper to buy and they will carry the load until they blow. Unlike a CB will degrade as it is loaded to full current. Each time it trips it gets a little weaker. Then it heats up internaly and starts tripping sooner and sooner. And you can get fast acting fuses or medium blowing fuses. or slow fuses. And like the poster ahead of me said. what happens if it resets when you are not around.
At one time... The code required fuses for some 120 volt and higher installations. I do not know if that is still the case but I once ask my boss why they had fuses AND circuit breakers. That was his answer.
In this case you are protecting electronics. In theory that fuse should never blow (Though I might have used a slightly larger fuse (perhaps 45-50 amp) but the self-resetting breaker ....
Well should something go wrong inside the inverter. that breaker will make it go wronger, and wronger, and wronger, and .. Bad things may happen. (Well worse things).
Oh, that time was like 45 years ago where I lived.
One other thing.. You need not worry about the fuse blowing, after all Murphy's Law for Electronics says that a $140.00 dollar transistor will blow in order to protect a $1.40 fuse.
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