What Does a Blown Fuse Look Like - Troubleshooting - Bad Fuse vs Good Fuse 

Sometimes I’m funny. :-) Sometimes... thanks for watching!

Some schools have found me! :-D Thanks for watching!

Thanks!

With glass fuses, usually the inside of the glass will be smoky and the wire that runs through it will be severed or completely burnt away. I have come across bad ones though that look perfectly fine, but when you measure them with the meter they test bad. They can be sneaky like that. I had to rewatch the video because I was sure I showed the glass one. I guess not, other than the animation at the beginning. 🫤 Sorry.

Size doesn’t matter, typically. Although with some bigger fuses, I have found bad ones that weren’t completely blown, but they read higher resistance. Bigger fuses especially should read very low resistance when they are good. Anything above a 5 to 10 ohms, I would replace it. I’ve seen a big fuse fail to open and interrupt the circuit like it’s supposed to. It exploded and blew the cabinet door open. That was a 100 amp fuse.

Flukes are great. The one I use is older than me! Lol

I love them old meters. they are so cool how they work to. like the needle is attached to a shaft like a bolt and ot goes through a tube that is wraped with wire for induction .....it's crazy how them old meters work. great video... I like the humor shots.. shows you pl;aned it out. I need to plan better i just go in and wing it and end throwing most of it away. good luck with your channel . you ever see that funny electrician guy .... he's like from Iran or somewhere over there ... he knows his stuff but he's allways melting stuff and getting shocked ...he's funny

Yeah, I’ve seen him! Lol He is inspirational! I got to repair an old Huntron bench top meter from the early 80’s at work awhile back. It was pretty neat. We don’t get to repair stuff at the board level much anymore, but that older stuff can still be repaired at the board level!

A couple things I’d look at first: Sometimes when a breaker trips, it won’t actually kick back to the middle position. If you haven’t yet, I’d try flipping it fully to the off position and then back on. It will feel a little loose compared to a fully engaged breaker if this is what happened. Second, I’d measure the outlet where your stove is plugged in with a non-contact voltage detector or meter (If you aren’t comfortable doing this, get help from a professional). If you have the correct power there, then it’s likely something with your stove. It could be a blown fuse within your stove; or possibly damage to the control board if you had a power surge. Also, if you have an electric stove, it likely has a 240V plug. You’ll want to make sure you have proper voltage on two of the three or four receptacle slots. If you have a gas stove, it will probably have a normal 120V plug. It should still be on its own dedicated circuit, but I’d still check to make sure a GFCI outlet nearby hasn’t tripped.

Rt