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Jonathan Gracey
Jonathan Gracey
Jonathan Gracey
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@williammolina1007
@williammolina1007 5 дней назад
Thanks. Good job
@sudh304kapoor
@sudh304kapoor Месяц назад
Thanks for explaining this topic , nice explanation
@JoanLoughmiller
@JoanLoughmiller Месяц назад
I had to replace my trunk hinges on a 14 Corolla and could not remember how the torsion bars were installed. Your video solved my headache. Thanks a bunch. .
@graceyj20
@graceyj20 Месяц назад
Glad it helped
@hellygondalia9008
@hellygondalia9008 2 месяца назад
Hi Jonathan, Can you please clarify how you take D = 455 mm.
@graceyj20
@graceyj20 2 месяца назад
Hi, NPFA Annex D4.3 references 455mm (18") as a typical LV value for MCC's & panels.
@kevinlawson6028
@kevinlawson6028 2 месяца назад
Thank you TREMENDOUSLY...I was trying for 20 minutes, almost lost some fingers; in a Lexus ES it is very difficult to see or move that hinge while you THINK you are doing the right thing. Once I saw your video and found it, BOOM done in 10 seconds!
@graceyj20
@graceyj20 2 месяца назад
Nice! Glad it helped
@adegbolafestus5245
@adegbolafestus5245 3 месяца назад
Been driving my car for a year with a heavy trunk. Fixed it myself today, all thanks to your video 🙌🏼🙌🏼.. Thank you so muchhhhh
@graceyj20
@graceyj20 Месяц назад
Nice!
@alext5497
@alext5497 3 месяца назад
Where does conductor length factor in
@graceyj20
@graceyj20 3 месяца назад
The conductor length/size/properties reduces the fault current from the source to the fuse due to it's impedance. Calculating the available fault current is not covered in this video.
@alext5497
@alext5497 3 месяца назад
@@graceyj20 I was binging and just put the comment on the current vid I was on. Thanks
@gerardobarrios2925
@gerardobarrios2925 4 месяца назад
Thanks
5 месяцев назад
Delta can have a neutral if it is a 120 Delta secondary. It has a middle tap kind of like a split phase transformer. Yes Delta can have a neutral.
@graceyj20
@graceyj20 5 месяцев назад
Yes, high leg delta's can have a neutral but they're not that common in most areas. The comments are generalized to cover the most common circumstances.
@IEPBrasilia-Marco_Oliveira
@IEPBrasilia-Marco_Oliveira 5 месяцев назад
Hello, any recommendations for an application to calculate the NH Fuse Melting Time?
@georgekhawand6097
@georgekhawand6097 7 месяцев назад
Had a hard time finding a relevant video for my 2018 toyota corolla trunk torsion bar which suddenly came loose. Your video was right on. Fix it in minutes. Thanks.
@SilpaMuebles
@SilpaMuebles 8 месяцев назад
Gracuas al fin lo arme!!!
@sovidelectro8383
@sovidelectro8383 8 месяцев назад
Wow! Thanks bro, you save the day. You are the only guy who perfectly demonstrates how and why the value of minimum fusing current is greater than the rated current of the fuse! I can sleep well tonight, Cheers!
@user-yd1mr6ir9d
@user-yd1mr6ir9d 8 месяцев назад
Love it
@farnadtohidkhah9448
@farnadtohidkhah9448 Год назад
Thank you very much for the video
@graceyj20
@graceyj20 Год назад
Glad it was helpful!
@michaellouie5046
@michaellouie5046 Год назад
Thank you
@dougharlow6037
@dougharlow6037 Год назад
I have a 1998 Toyota Corrola LE. I have 2 swing arms on the turnk that came out of the trunk spring on the LEFT side.I can't seem to find a video on this. every video is for the single arm right side:. Can you help me. Thanks
@graceyj20
@graceyj20 Год назад
Sorry I'm not familiar with that configuration but hope you able to find a resource to figure it out
@atmacm
@atmacm Год назад
Deltas can absolutely have neutrals. The 120/240 Delta is very common. 2 phases will be 120V to neutral and the high leg will be 208V to neutral.
@mikea8293
@mikea8293 Год назад
Thank you so much!
@ballensaleh9042
@ballensaleh9042 Год назад
Great stuff. Helped me out a bunch!
@joshuaperez2796
@joshuaperez2796 Год назад
This video help me a lot thanks for that mate
@blonske
@blonske Год назад
So good, thank you!
@johnfemenella304
@johnfemenella304 Год назад
Brother thanks man, I just found your thing. I'm sitting here on a hill to hold my trunk open on my sonata and it worked like a charm. You rock brother. Thanks for helping somebody out. My best to you
@graceyj20
@graceyj20 Год назад
Glad it helped!
@Bravo_L
@Bravo_L 2 года назад
are these tables and values only found in that expensive nfpa book? i cant seem to find that exact table you used online
@Bravo_L
@Bravo_L 2 года назад
i found a 2015 edition online!!!!!
@graceyj20
@graceyj20 2 года назад
You can view the last several revisions of NFPA 70E (and many others) through NFPA.org for free. It's not great but there is a free option.
@alext5497
@alext5497 3 месяца назад
It's free on their site. And also it's free on Pira hfndkejrjn bay
@user-ny5be4lm8z
@user-ny5be4lm8z 2 года назад
yes just what i needed
@AngelRomero955
@AngelRomero955 2 года назад
I’m an electrician and I remember learning this in the first 4 months into the trade!
@elcheapo572
@elcheapo572 11 месяцев назад
This is my 4th week.
@AngelRomero955
@AngelRomero955 2 года назад
Good refresher for an Electrician!
@popeye5808
@popeye5808 2 года назад
Thanks a bunch mr saved me a headache. 👍
@14aremu
@14aremu 2 года назад
Hi Jonathan, thank you for the clear explanation of the concept. In the calculation of your Normalized Incident Energy Level, the K_1 value used was a positive value (0.555), what would be the reason the value was positive in the equation? Thank you.
@graceyj20
@graceyj20 2 года назад
Thanks for the question. The missing negative sign in the equation was a typo. It's a negative value as indicated on the right had side of the screen and if you go through the calculation with it as a negative you'll note it equates to the lg en value shown on the next line, 0.68298.
@elderpaiz6151
@elderpaiz6151 2 года назад
Excelente 👌 muchas gracias!!
@leofawkeyla2944
@leofawkeyla2944 2 года назад
i was downloading the catalog time-current characteristics of the nh fuse, but in the picture above the graph there is no description of the current rating. can you help me?
@graceyj20
@graceyj20 2 года назад
You should contact the manufacturer if their data sheet isn't properly marked.
@VikashKumar-tk3de
@VikashKumar-tk3de 2 года назад
Very nice video by Mr.Gracey, Could you please make video on Arc flash Boundary calculation
@VikashKumar-tk3de
@VikashKumar-tk3de 2 года назад
Very good video
@rpsmith
@rpsmith 2 года назад
sinewave???
@tonycstech
@tonycstech 2 года назад
Why cant you just bend it backwards and reinstall ? Should last for a while
@JaeChristt
@JaeChristt 2 года назад
Thank you!
@frosty0077
@frosty0077 2 года назад
hey jonathan what's up
@akramal-frigy1143
@akramal-frigy1143 2 года назад
Thank you
@Pete.across.the.street
@Pete.across.the.street 2 года назад
Thank you so much! I couldn't figure this out by myself.
@karlyearde9065
@karlyearde9065 2 года назад
98
@Honeybatger
@Honeybatger 2 года назад
Thank you
@dirkgermonprez5035
@dirkgermonprez5035 2 года назад
if we start at 100k and you want to reduce for MCB at 10k, then you have to reduce twice?
@graceyj20
@graceyj20 2 года назад
That depends on the protective device characteristics and the short circuit current sources throughout the system. That said, if you're looking to reduce for a 10KAIC rated MCB you should confirm with the MCB manufacturer that the make/model of the fuse your planing to use is recognized for series rating with that specific MCB.
@williamhorrigan1877
@williamhorrigan1877 2 года назад
can the torsion bar brackets be got separately
@cliffharrington6500
@cliffharrington6500 2 года назад
Thankyou Jonathan, the clearest explanation I have seen yet.
@popdansergiu6598
@popdansergiu6598 2 года назад
Hello Johnatan, I bended those metal rods but they are still in place somehow, the trunk closes fine. Which is their purpose?
@RJ-xd6tf
@RJ-xd6tf 2 года назад
Hi, how would you calculate the tripping current of the circuit breaker if it set to 125%? Thank you in advance.
@graceyj20
@graceyj20 2 года назад
You have to look at the time to current curves for the specific breaker. You should be able to obtain these from the circuit breaker manufacturer.
@sohailjanjua123
@sohailjanjua123 3 года назад
Hi Jonathan i like your lecture. Thanks
@graceyj20
@graceyj20 3 года назад
Glad you found it helpful
@muhannadhamad
@muhannadhamad 3 года назад
Thanks for saving the day
@user-es7ib5gq4s
@user-es7ib5gq4s 3 года назад
Thank you sir
@sohailjanjua123
@sohailjanjua123 3 года назад
Hi Jonathan, I like your lecture.Thanks