OHNS LAW SCIENCE OF THE WORLD

OHMS LAW    💪                                                                                                                                                           

Vi kan bruke Ohms lov til å beregne strømmen og resistansen som går gjennom kretsen. 

 

Seriekoblede forbrukere

            R_t = R₁ + R₂ + R₃ + R₄ + 

Viktige Huskeregler.        

I en seriekobling er totalresistansen lik summen av alle enkeltresistansene.

I en seriekobling er strømmen lik i hele kretsen, spenningen fordeler seg over

forbrukerne etter hvor stor motstand strømmen møtes.

Merk: I en seriekobling er summen av delspenningene lik spenningen på spennin

       

  

https://ndla.no/subjects/subject:28/topic:1:50956/topic:1:51376

                         

KIRCHHOFF`S LOV

LOV 1: 

Den Samlede av alle strømmene til et knutepunkt er lik summen av alle strømmene fra det samme knutepunktet

     Dette fant Kirchhoff 1 lov.  I = I1 + I2 + I3 + I4 + ……

lov 2: 

Kirchhoff’s Voltage Law is the second of his fundamental laws we can use for circuit analysis. His voltage law states that for a closed loop series path the algebraic sum of all the  voltages around any closed loop in a circuit is equal to zero. This is because a circuit loop is  a closed conducting path, so no energy is lost

https://www.electronics-tutorials.ws/dccircuits/kirchhoffs-voltage-law.html

https://youtu.be/XUrpJvUmNRk

                                                                   

               

https://youtu.be/XUrpJvUmNRk

https://youtu.be/XUrpJvUmNRk

                                                                                                                      

             

          

     

Parallellkobling

Parallellkobling er den vanligste måten å koble sammen forbruksapparater til en spenning.

Hjemme parallell kobles alle lamper, panelovner, komfyr, vaskemaskin osv. til 230 V-uttakene.

Merk:

Alle lampene, varmeelementene og de elektriske motorene i en bil kobles gjennom kabler og sikringer til det samme 12 V-batteriet i parallellkobling Den Samlede av alle strømmene til et knutepunkt er lik summen av alle strømmene fra det samme knutepunktet.

 

Dette fant Kirchhoff1 lov.  I = I1 + I2 + I3 +I4  + …

https://www.youtube.com/watch?v=XUrpJvUmNRk

    https://www.youtube.com/watch?v=XUrpJvUmNRk

Viktig regel. 

I en parallellkobling er spenningen lik i hele kretsen, strømmen fordeler seg over forbrukerne.
I en parallellkobling er alltid totalresistansen (erstatningsresistansen) mindre enn den minste  enkeltresistansen

 

 

KABELBEREGNING

1. FORLEGNINGMÅTE,  2.VERN I_n  3.STRØMFØRINGSEVNEN I_Z   4.KORREKSJON AV OMGIVELSESTEMPERATUR  OG  NÆRFØRING ) : NEK 400 side, Tabell 52B-1  Side 207,

Bestemmer av referanseinstallasjonsmetodene (forlegningsmåter), dimensjonering av kabel, vern og bestemte strømføringsevnen I_Z   

Montørhåndbok var NEK 400 Side 213.

Nasjonale krav (Næring, industrielle, mål , Fabrikk,)

 krav  1, I_b≤ I_n ≤ I _z

          2, I₂ ≤ 1,45. I _Z                                                                

For bustad krav  Tabell 6,2  side 213

1.       I_b≤ I_n

2.       I₂≤ I _z

 Note:     I₂≤ I _z          I_{n .}1.45  ≤ I _z     

 VALG AV TVERRSNITT  OG NORMENS BESKRIVELSE ( NEKK400 SIDE 204, TABELL 6.2a)

1.Type av Kabel i isolert vegg , Kabel i rør , Kabel i rør i termisk isolert vegg  

2.Forlegningsmåter A₁, A₂B₁ B₂C D₁ D₂ E F , 

3. Kabel tverrsnitt og strømføringsevnen til Kabel.  NEKK400 SIDE 204, TABELL 6.2a

NEK 400 side; 209 Tabell 6.2d og side 210,

KORREKSJON FAKTOR :Det handler om omgivelsestemperatur(K_T)og Nærføring av flere kabler (K_n) .

NB: Omgivelsestemperatur avviker fra 30^¤ c i luft og 20^¤ c i baken, stråmføringseven i ledning og kabel korrigeres, skal ‘multipliseres med korreksjonsfaktor I tabellene 52B-14 og 52B-15 med strømføringsevnen.

MINST STRØMFØRINGSEVNE

I_{Z min} =   vernet merkestrøm

                 K _temp. K_{nær føring}

I _z   = Iz _Avlest . K _temp. K_{nær føring}

STIKKONTAKTUTAKK PLASSERING

I henhold til NEKK 400 side 240 , NEKK 400 SIDE 241 TABELL 7.2a. 

 Normen krav viste at stikkontaktene må plasseres slik at de tilpasses  utstyret som er påtenkt, kraven også viste at alle de nye boliger skal stikkontakt ha jord, klassifiserte med IP grade. for eksempel IP20, IP2X etc.  

NEK 400 SIDE 264 tabell 7.5a

INSTALLASJON AV UTAKK I FORSKJELLIGE ROMTYPE

Installasjon på bolig avdeling skal ha et minste antall stikkontaktuttak i forskjellige rom.  eks i stue 2 uttak per 4 m2 i tillegg 6 uttak for multimedia. kjøkken 2 uttak per meter kjøkkenbenk, 4 uttak ved spise plass, Bad minst 2 uttak, garasje minst 2 uttak. 

NEK 400 SIDE 264 tabell 7.5a kapsling  i Forskjellige soner som tåler vann og Støv.

 

SONE	KAPSLING (der utstyret ikke vil utsettes for spyling
	NORMERTE KRAV	PRAKTISK KAPSLINGSGRD
0	IPX7	IP67
1	IPX4	IP44
2	IPX4	IP44

kapsling for utstyr og montering 

 Tilfredsstilles 1. kravene på SELV OG PELV og jord feil med nominell at utløse strøm skal ikke overstiger 30mA NEKK 400 SIDE 265 TABELL 7.5a

_FSE

1.FSE Opplæring,

2.Forskrift om sikkerhet arbeid  

3.Drift av elektriske anlegg, lavspent.  

 FSE :FORSKRIKFT OM SIKKERHET VED ARBEID I OG DRIFT AV ELEKTRISSKE ANLLEG.  

https://www.trainor.no/cms/FSE- (ikke gratis) 

TRAINOR : OPPLÆRNG FOR FAGFOLK 

https://www.trainor.no/cms/

FES Video Klipp: https://www.youtube.com/watch?v=xuZmxajy_tA

https://www.youtube.com/watch?v=pJYNra5E_R4

_{FSE oppgave. flest spørsmål handler  om sikkerhetsforskriften. meldeplikten, risikovurdering, medansvar, verneutstyr, spenningstesten, strømgjennomgang og førsthjelpe og flere andre.}   

_{JULE FEIRE 23.12.}

 

 

 

 

CHANGE IS INEVITABLE . PROGRESS IS OPTIONAL

CHANGE IS INEVITABLE . PROGRESS IS OPTIONAL

Being happy doesn’t mean that everything is perfect. It means that you’ve decided to look beyond the imperfections.

"it isn't finding the perfect person but learning to see an imperfect

 person perfectly" why ? its because Where your treasure is,  your

 heart will always be there. As the saying goes, 

`` we may not know what tomorrow may

 bring, for God is the only one who knows best`.`

 

' One who think of coming into relation ,has to prove the  most an 

indisputable task on earth , its like turning a mountain using a spade .

The fact is that in every relation   a lot of hearsays will be said, striking 

from different angles like lightening but a brain with new experience 

never goes back to an old dimension . 

It is always said , that its the  nature of the wise girl to resist  pleasure with out completely accepting people`s psychological ideology , I mean  THE GOSSIPS THAT TRAVEL MORE FASTER THAN SPEED OF LIGHT.                    

Its believed that despite how difficult it may be , a strategist boy will always see  opportunities in every difficulty in relationship because  the same problems that make you cry , is the same problem that will one time inspire you to be some one . Based on the fact `` the cries of a goat does not prevent it from reaching the market. so always keep trying . 

 Its never too late, in life if you wish for something good, never surrender , persuade for it until you win because no one is a greater psychologist to you than you your self ,to resolve  the agreements and disagreements saturating in life. Our first number one enemy in life , are the thoughts that we plant in our brains , these are the thoughts that make it difficult to intercept wise decision , to boost our self esteem and  confidence  

What we  have to remember is that All life is an experiment. The more experiments you make, the better ,we are the psychologists of our minds . Believing in your self that your the best ,is greatest   opportunity  to convice your subconscious mind . That's what we term  as  monkey attitude. (You can not convince a monkey  that honey is sweeter than a banana)   

 

Therefor finding the perfect person of your self is learning to see an 

imperfect person perfect." this is where sense of humor matters .

Love cannot survive without a sense of humor. Even if you are the hottest

 chick on planet 

Happiness always sneaks in a door you did not think was open ,–stay keen 

                                                                                                                            BY ANDREW BS

THE PATH OF SAFETY

This story tells of a genius  girl who learnt to be positive in life . She chose a path, namely the “Path of Safety” and the “Path of "hakunamatata”, I  refer her as Moncher ."

She believes the sexiest thing in this  entire world is  really being  smart.  thoughtful,  generous and  living your life  as though nothing is a miracle,The other is as though everything is a miracle.”  and the rest is crap. I admired her mindset world view of life philosophy that inspired me to write this blog.

As Wisely she  narrates ,  that our lives  are reflections of our attitude, they  can easy become negative and cynical towards the world around us . She continued and said that , these negative attitude are as a results  of  continuous  thinking  negative thoughts over and over and in the long run they end up becoming part of our  subconscious mind .Additionally , she said that,  You may not even realize that  you have these negative attitude because after a very long period of time , it becomes habitual ,  expectations  that will always  turn your life into a magnet of  a failure  or loser  ,because  every where,  every time ,every moment, every day,  you will  expect your self as  a disaster. 

She furfur gives words  of encouragement , by  Michael Jackson, “If you want to make the world a better place, take a look at yourself and make a change.” As creatures of habit,by making small adjustments to your daily life, the mindset, positive habits can be formed to make yourself and everyone you interact with happier.

Visualizing , Jogga, Meditation  is one of her tactics. she narrates, When things aren’t going your way, keep a positive attitude by visualizing yourself succeeding and achieving your goals. Just like Nelson Mandela when he was incarcerated—in a tiny cell that was just 6 feet wide–he kept his hopes up by visualizing himself being set free.

She arugues and proves  that Studies haves showed , having an attitude of gratitude is beneficial for every aspect of our life: that being grateful improves your health, your mood, your relationships, your career satisfaction, and on, and on.  addditionally , she  explains, that however  needs an attitude lift, simply think of all the things that you have to be grateful for. 

 She continues and further images , that every single action in this world starts with a thought. she expalins , These are the thoughts that guides us and helps us deal with life on its own terms, same thoughts that help us  make decisions by what we experience, see or hear.

Therefor  If we think bad thoughts, bad things happen to us. If we think good thoughts, good things happen to us. This way of thinking she believes comes from our consciousness,  It dictates the way we think and reason. 

.

However my challenging argument here ,is ironically  religious «Everybody wishes they could go to heaven but no one wants to die because Nothing in life is more sad than the death of an illusion. 

“When we overcome the fear of death, we become deathless, endless, and infinite.”  “Fear of Death only Brings Fear of Death" dying is pain, we all want to live forever, that is why we hate death and create the afterlife.” 

Suffering, failure, loneliness, sorrow, discouragement, and death will be part of the journey, but the Kingdom of God will conquer all these horrors. No evil can resist grace forever. Islam teaches us to say `alhamdulillah in every pain. therefore in short the challage here is to accept the calameties in life and learn how to over come them, because you can stay postive all your life. 

That`s  why some times I usually do believe this concept of positive and negative attitude is based on  empirical hypothesis of dark energy e thesis , that`s  why there is neither happiness nor misery in the world; there is only the comparison of one state with another, nothing more. He who has felt the deepest grief is best able to experience supreme happiness.

“The best index to a person's character is how he treats people who can't do him any good, and how he treats people who can't fight back.”