After reading so many posts about fuses on the net, it seems too many people are overlooking the safety factor these fuses are made, and used for. Some people even state they are using jumpers in place of fuses. Some people state they leave the home while their system is running too. I hope they don't live in a multiple family dwellings, and are putting others at risk by doing what they choose with these protection devices.
I've also read somewhere that Liquid Fuses may be filled by them. In my opinion, if the fuses were tested before by any independent labs such as UL, they need to be tested by them again, such as UL (other testing agencies too), for any of the past testing agencies markings to still be valid. The fuse element (or burn wire) runs hot. It may be close to its melting point during a listening session. If that element is immersed in a liquid, they may not blow as fast as originally designed. A fast blow may take on qualities like a slow-blow fuse. A slow-blow can be slower yet, than its designers originally intended. I can see the liquid heating up, while cooling the element up during operation. This is why I believe they need to be tested accurately again, in my opinion.
Maybe these were retested by some independent testing agency after the modification? The equipment they use to measure the blow times can be expensive, and may not be owned by some of these after market companies. It would be nice to know if they were tested, and provide a new spec sheet too. It's common sense that when the element (burn wire) is immersed into a liquid, specs will change.
A lot of engineering goes into products, and all of the parts used in them. For the customer to change to something that may have taken years to be designed by knowledgeable people, may be more risky that they realize. Don't forget, every part used took time to design. A fuse is there to protect the product, and to prevent fires. I would make sure the fuse you use can safely protect you, and your product. Neighbors too. I wouldn't experiment with unknowns. Again, designers put fuses in them for protection.
Also, you may void any warranty on your product. It's not a manufacturer's responsibility to repair something that may have been protected by a fuse that was changed by the buyer/user, if it wasn't an exact, specified, replacement. Just because somebody else is doing some experiment and nothing has happened yet, doesn't mean it won't sometime after. Use common sense. Some people seem to be going too far, without having any knowledge about the engineering that went into these products, and possibly, the safety risk.
