"Groovy" flat fuses VS non-groovy
I recently needed to replace a 40amp DC flat fuse between my RV battery and inverter, and had the hardest time trying to insert the spare fuse that the original owner had provided. Upon (very) close ...
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So you notice those big grooves on the left one and not the right... I stopped by the local NAPA parts dealer to ask, he had some with grooves and some without but didn't know the difference. I also messaged Littelfuse, maybe they will enlighten us. "That's what I like about standards, there are so many of them!"
