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Even these cartridge fuses have 2 types - those with renewable fuse links and those one-time non-renewable types. The only advantage of renewable type - they are more economical because cartridge can be reused. However, more precautions are needed with regards to cleanliness of contacts, securing of cap bolts, and choice of current rating of link.
Whenever a fuse blows, it means there is already a big fault in circuit. Electricians must be especially careful during this time and take necessary precautions. The fuses blow up for safety. Don't cause another blow up!
Until next time...
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