Question on fuse for A/C compressor

[kd4ulw]

You said earlier that 25 amp fuses were rated for that instead of 20, now the term 30 amp fuses are being thrown around. Don’t know if that was meant to be a 30 amp breaker but don’t put 30 amp fuses in there use the 25 A if it blows again.

 

[Neb]

You said earlier that 25 amp fuses were rated for that instead of 20, now the term 30 amp fuses are being thrown around. Don’t know if that was meant to be a 30 amp breaker but don’t put 30 amp fuses in there use the 25 A if it blows again.

Agreed.

The 30 A breaker protects the wires. The 25A fuse to protect the AC.

Sea story

I worked with a guy that trouble shot fuses blowing by putting larger and larger fuses in until he found something that smoked. He didn't last long with that company.

Ben

 

[Haertig]

I worked with a guy that trouble shot fuses blowing by putting larger and larger fuses in until he found something that smoked. He didn't last long with that company.

Reminds me of one of my first projects fresh out of college with my EE degree. I had designed a central office simulator to test out phone systems with and one of the op amp circuits was a little noisy. I was busy calculating away additional negative feedback, filters, and things we were taught to correct that. Then my mentor engineer just said, "hang a capacitor on the output, just grab one out of that drawer over there". That helped but it still wasn't perfect. So he said, "get a bigger capacitor".

So much for my electrical engineering training...