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|Date Signed Up:||4/04/2011|
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latest user's comments
|#28 - Any wire going into the electrical panel needs to fed in with … [+] (1 new reply)||08/11/2015 on This gets me wet..||+1|
|#3 - The problem is, that isn't quite up to code.. [+] (9 new replies)||08/11/2015 on This gets me wet..||+4|
#28 - ninjatacofortytwo (08/11/2015) [-]
Any wire going into the electrical panel needs to fed in with conduit, or piping. Can't have just wires going in, but not all standards are the same, where I live you can't have that kinda thing going on with electricity because think of ow easy it is to nick a wire now.
The blueprint in the lower left makes it look as if this was a residential job which could mean there might not even have been an inspection.
#25 - azdbuiazdh (08/11/2015) [-]
Well, this is the only wire that goes in the bottom of the case, i meant that all those so neatly placed wires would have to go in through the bottom of the electrical "closets", i have no idea what they are called in english. I could be wrong tho, i did pay so much attention to the code in school
#26 - lennybrown (08/11/2015) [-]
Not really. Basically it depends on the layout of the building and and where the box is am guessing for the size and that plan its a large maybe 2 story building with a basement and the basement is where this is why the wires have to go up to minimize the amount of wire used.
The main power line comes in from the bottom (that big tube) and then inside the big power box it then get split into power for all the rooms and functions, small power box is most likely for house lighting and ground.
Nothing wrong with the boxes except the plug sockets.
|#11 - Lol at the partial nip in 13, didn't know ya coulda get …||08/07/2015 on Freckles comp.||0|
|#243 - see you're too simple, but what evs, wanna spark one m8||08/01/2015 on Foo Fighters Learn to fly...||0|
|#240 - But if I simply say fish harder yes I'm giving them a win, but… [+] (2 new replies)||07/31/2015 on Foo Fighters Learn to fly...||+1|
|#3 - Crash and a seagull, completely separate, ****** jackpot||07/30/2015 on Racing seagull||0|
|#17 - Fish harder feg, nobody cares bout you and your opinions [+] (5 new replies)||07/30/2015 on Foo Fighters Learn to fly...||+69|
|#116 - I really think there are too many pointless jobs as it is and … [+] (1 new reply)||07/20/2015 on Baernie is bae||0|
|#18 - thank you, I love learning ****||07/11/2015 on Random Medical Facts, #4||+1|
|#6 - wouldn't those myelin sheaths actually cause impulses to trave… [+] (5 new replies)||07/10/2015 on Random Medical Facts, #4||+4|
#53 - nanahara (07/11/2015) [-]
tl;dr The myelin sheet works as an insulator around the nerve. it decreases the capacitance and increases the resistance.
The Impulse doesn't actually jump outside the axon on top of the sheets. but this myelin keeps the sodium inside not allowing it to leak out, and propagates inside the axon, and the impulse is "refreshed" at every node of Ranvier.
so.. in an unmyelinated nerves the action potential (the electrical impulse) is propagated in a way where there are channels which open once the cells sense a high enough voltage (threshold). so as the electrical impulse progresses through the axon, more and more sodium channels will open, thus maintaining this "high" voltage, and like this, it will propagate further and open more channels along the way.
You can imagine with this kind of conduction the concentration of sodium outside the cell must be sufficiently high, so that it can enter the cell once the channels open. if the outside concentration isn't high enough, the propagation of the impulse wont continue, and the nerve wont pass on the impulse to the next nerve.
so if a lot of channels are opening up right next to each other it will cause a decrease in sodium concentration. this means that this kind of conduction is decremental. it will get weaker and weaker the longer it has to travel (which is not good). the impulse moves like a wave. In addition to that it is more energy requiring and way slower (2 m/s) than a myelinated nerve (200 m/s).
The myelin sheet works as an insulator around the nerve. it decreases the capacitance and increases the resistance.
The Impulse doesn't actually jump outside the axon on top of the sheets. but this myelin keeps the sodium inside not allowing it to leak out, and propagates inside the axon. The impulse is "refreshed" at every node of Ranvier. thus the impulse is much faster (200 m/s) and not decremental.
so you can imagine how much energy is spared in myelinated nerves, as they only use about 0.2% of the channels compared to unmyelinated.
Also, these nodes are far enough apart for the sodium concentration to be unaffected by nearby cells channels, or the same cells channels. Thus the concentration of sodium at each node is high. as well as the density of these channels being higher at each node, compared to an unmyelinated nerve.
it is a bit more complicated than this, but im not gonna bother getting into it, unless you care. but other ions than sodium play a part too, and the myelin sheets have some function when it comes to regeneration of damaged nerves and maintenance of the nerve cell itself.