The screw in slow blow fuse. Fuses part 4

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A description of the time delay screw in fuse that uses an adaptor to eliminate use of the wrong fuse in a circuit. How it works. This video is part of the pilot gas furnace playlist.
This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If you have suggestions or comments they are welcome.
If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Know your limits.

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Опубликовано:

10 май 2012

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Комментарии : 50

@grayfurnaceman 10 лет назад

Every fuse has a different depth of threads, depending on the amp rating of the fuse. If the depth is not right, too long or too short, it will not make contact. Hope this helps. GFM

@TUXXREVIEWS 10 лет назад

Nice video swing fuse types

@mainelyelectric 10 лет назад

I also heard that the threads are different taper as well. not sure if I'm right.

@grayfurnaceman 11 лет назад

Mostly antique. I always heard them called fusible panels. Hope this helps. GFM

@bramabull111 2 года назад

Hey, Can you swap a tc15d for a td15d when using a air conditioner? I dont know much about these things but the box has a tc in it and im reading td are meant for air cons

@ZachVanHarrisJR 4 года назад

*Thanks*

@chetosbaby1 4 года назад

i have an old circuit box in my apartment & it uses these kinds of plastic screw fuses.recently my water heater went out no hot water.theres these kind if fuses and the ones that look like bullets

@grayfurnaceman 4 года назад

If you want to test these fuses, you will need a meter to check continuity or you can just replace the fuses to see if the W/H works. GFM

@alonzoboyd8636 29 дней назад

@grayfurnaceman how can u tell if there blown, jus bought a new dryer cuz I thought my old one was done n plugged it in and bam same thing

@DougPowell01 4 года назад

The lamp style base is called an "Edison" base. This Type S fuse is called a "rejection" base. The rejection socket rejects the Edison base. Simple.

@DavidBerquist334 10 лет назад

My parents have them 8 threw 15 fit in adaptor 20 and 30 are same sizi only three is difrent to prevent mixing my parents have 100 amp splitbuss wads worth 8 fuse stats 4 pullouts

@gregorybritton6695 3 года назад

@lionheart3569 Год назад

@grayfurnaceman, Hi Buddy, Hope you're doing well. I had a question. Can I use a 20 amp fuse in a 15 amp socket? Sometimes my 15 amp fuse blows when the power goes out & then comes back on a few minutes later. That circuit is running the window ac, my big screen tv & ceiling fan. I would like to know if I use a 20 amp fuse would that cause a fire or melt the wire or something like that or would it be ok to replace it with a 20 amp fuse & if the load is too much it will blow just like the 15amp fuse? Thanks & I await your reply.

@jeremygeiger5134 Год назад

Not the poster, but I'm an electrician. Short answer, no. If your circuit is overloaded, or within the overload range of 80% to 100% of the max rating, then that's why you're having trouble with that circuit tripping. You should probably figure out a way to separate at least one of the loads you mentioned off the circuit, maybe by running a heavy duty extension cable or moving the location of the AC or TV. If you can get a licensed, insured, bonded Electrician to change the fuse/adapter and sign off (taking responsibility should you have a fire) then that's on them. You should definitely not change it yourself though.

@alonzoboyd8636 29 дней назад

@@jeremygeiger5134how can I tell if my old round fuses are blown? Bought a new dryer because other one wasn't coming on to only plug it in to not work as well ughhh

@joetiller1031 7 лет назад

I got them in my box, mine is fusestat brand, you cant screw a 30 in a 20 ect. the threads are different.

@grayfurnaceman 7 лет назад

First, replace the panel. Just had to get that in. We stopped installing these panels in the 1960s. One of the attempts made to increase safety with these panels was to install adaptors to stop you from using too large a fuse. Not only are the threads different, the depth of the fuse is different. GFM

@terrarichards6924 7 лет назад

My fuse is not blown how some of my light will not come on

@sarahmarlow3495 4 года назад

@@terrarichards6924 that is happening to me right now. Did u figure out the reason?

@grayfurnaceman 12 лет назад

vid

@scannermaster11 11 лет назад

what is that kind of panel called

@DavidBerquist334 4 года назад

I seen 6 1/4 amp fuse what would it be used for is it for heat tape circuit

@grayfurnaceman 4 года назад

Most of those fuses were used for motor circuits. GFM

@lindalund1517 2 года назад

I have this act Same one, I need it for my furnace.., can’t seem to find a replacement. Any information would be greatly appreciated. Mine says BUSS 6 1/4 amps fustat.

@DavidBerquist334 2 года назад

@@lindalund1517 I got them in a true value hardware or maybe a electric supply store can order try ebay

@DavidBerquist334 2 года назад

@@lindalund1517 they are on eBay type in 6 1/4 amp fuse Stat about 7.00 dollars

@kjmullinz 11 месяцев назад

Does that plastic on top of the fuse bulb come off? ... I'm not sure if I'm supposed to remove it or not.

@grayfurnaceman 11 месяцев назад

It should not come off. GFM

@williampennjr.4448 5 лет назад

Are breaker fuses like that too, different lengths?

@grayfurnaceman7640 5 лет назад

Breakers are not fusible. No element melts. They work on magnetism or heat or both. GFM

@williampennjr.4448 5 лет назад

@@grayfurnaceman7640 I said breaker fuses, not breakers.

@grayfurnaceman7640 5 лет назад

@@williampennjr.4448 I have no idea what a "breaker fuse" is. GFM

@williampennjr.4448 5 лет назад

@@grayfurnaceman7640 just like the name implies. It screws in like a fuse but acts like a breaker.

@grayfurnaceman 5 лет назад

@@williampennjr.4448Oh yeah, I remember them. The are heat operated bimetal discs. A heating element warms the disc and it pops open if the draw is too high. I am not sure if they are listed by UL. GFM

@andystitt3887 2 года назад

Where are the videos on slow blow fuses?

@grayfurnaceman 2 года назад

The link is broken for the rest of the videos. I will fix it it tonight. Give it a try tomorrow. GFM

@jameswestii454 2 года назад

So can these screw in fuses be used today for a Ductless unit that needs 15amps (220v)?

@grayfurnaceman 2 года назад

Yes, if the manufacturer approves. GFM

@lionheart3569 Год назад

@grayfurnaceman Год назад

@@lionheart3569 That's a no. You could overheat the wires or components. Now lets look at why it blows. When the power goes off while the A/C compressor is operating, then comes back on less than 5 minutes later, the compressor pressures have not equalized and the compressor draws excessively high amperage. That means the fuse will blow. To solve this, you can either un plug the A/C and wait the 5 minutes or you can install a slow blow fuse. GFM

@lionheart3569 Год назад

@@grayfurnaceman , Thanks for your reply. I really appreciate it. I have a SL 15 amp time delay fuse in there which is what's supposed to be in there. Is that what you mean when you say to install a "Slow Blow Fuse"?

@grayfurnaceman Год назад

@@lionheart3569 It is a slow blow medium duty. You can try a type T fuse that is a heavier duty motor load fuse. GFM

@eddieloius4592 3 года назад

I thought for Motor , you need a delay type fuse? 0:01

@grayfurnaceman 3 года назад

That is correct. GFM

@athenaocasio8091 Год назад

What is a time delay fuse?

@DennisGMVM1 3 месяца назад

Is there a tool to help unscrew this fuse ?

@grayfurnaceman 3 месяца назад

Not that I know of. If it is stuck, you may need to replace the disconnect or, if it is a main panel, replace the panel. Most of these are very old and may not be viable anymore. GFM

@DennisGMVM1 3 месяца назад

@@grayfurnaceman thank you