PSW 505 Fuse: Fast or Slow Acting?
JohnBF
Posts: 7
An incompetent electrician sent a surge through one panel of my house. Most important stuff was on surge protectors but not the sub. The fuse is not merely blown, it exploded. I can't tell if the replacement should be fast acting or delay acting, can someone advise?
Best Answers
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Thanks, I have that spec, but Amazon shows it as available in both fast and slow blow versions. Which should it be?
Are you referring to Amazon having both fast and slow blow and you're still confused?
Most fuses are made in both fast and slow blow. In your case you need fast blow. So that is what you need to replace it with. -
Are you referring to Amazon having both fast and slow blow and you're still confused? ... In your case you need fast blow.
Exactly what I was confused by, thank you PittDog2.
Answers
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3.15A quick as listed on the back below the IEC plug
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Thanks, I have that spec, but Amazon shows it as available in both fast and slow blow versions. Which should it be?
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Apologies, bFestYboy, but I dont see the word "quick" anywhere on the back of my model or the female plug. But I don't doubt you.
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The visual que from the fuse is the tell tail. Slo-blo fuse wires are thick and typically have a white center of fiberglass or the exterior is coated in white (higher amp applications). In this case the center wire is thin and uncoated.
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FestYBoy, that's good to know. Unfortunately since the fuse glass was shattered and there were no visible fuse wires, I couldn't tell. (See my OP.)
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The visual que from the fuse is the tell tail. Slo-blo fuse wires are thick and typically have a white center of fiberglass or the exterior is coated in white (higher amp applications). In this case the center wire is thin and uncoated.
Some slo-blow fuses actually have a spring that slows the heat up then lets go when it gets to a certain temp. I always thought the center piece was ceramic to dissipate heat from the wire to slow the wire breaking. Either way slow blow are very noticeable compared to the fast blow fuses. They also say slo-blo at some point around the top -
Why do I have a feeling you are going to need more than a fuse?
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Why do I have a feeling you are going to need more than a fuse?
Pretty likely you're right. But gotta try the $6 solution just in case. The company has agreed to make everything good, and has so far covered $1,320 of furnace repair for circuit board, low volt transformer, and after hours call. The employee who messed up has not returned, may have lost his job. I understand people make mistakes, but this has been an expensive and disruptive one.
Wish me luck on the fuse, and thanks to all for the information and answers. -
No luck with the fuse, sub's dead as a doornail. I'll offer it as parts to a local electronics repair shop.
