hi my sister-in-law is visiting from
Australia and I'm kidding she's cool she
brought her special hairdryer from there
that's apparently the only type in
existence in the entire universe that
does the magic on her hair the problem
is that it runs on 240 volts and here we
have 120 volts
yeah she's Australia and while my wife
is Canadian it's because we are all
Iranian of course but every one of us
moved to a different spot in the world
the end maybe I should do a draw my life
or something in my other channel
meditation anyway my sister-in-law ended
up in Australia and now she needs like
230 volts to run her hairdryer what she
needs is a power adapter and so she
bought this yes this is an adapter but
it only converts the Australian plug
shape into a North American plug shape
and in fact this thing was purchased
from China so it already had an
Australian adapter on top of it you
could directly connect them doesn't
matter all we need is something to
convert 120 volt AC to 240 volts of
course I'm not blaming her for not
knowing she's a senior planner and
project manager with the background in
chemical engineering
I am the electrical engineer so all I'm
asking is to trust me for once I earn my
skills from experience if you also like
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go to Skillshare where you can get two
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yourself for anybody is knowledge so yes
of course we can plug this into the
hundred 20 volt AC line and it will turn
on but at half the voltage we only get a
quarter of the power out of it so it
won't heat or blow enough of course
there are tons of electronics out there
that come with their own switching power
supplies like a laptop or a mobile phone
charger that supports the entire input
voltage range for these all you need to
do is to adapt their plug but things
like an iron or a hairdryer don't have
their power adapter so this is a
transformer that outputs 240 volts you
simply plug this into the 120 volt and
plug your hairdryer in and turn this on
oh this could only output a hundred
watts but this needed a thousand watts
there are thousand watts 240 volts
step-up transformers you could buy what
for that price you could buy a whole new
hairdryer you can borrow our hairdryer
you know I don't need it the only one
that does it for you a you know you just
look fine the way you are I'm sure we
can find something similar no I didn't
buy my degrees I know how to make it
work right fine Hey
actually we do have 200 volt or 240
volts AC at home in North America we run
most things at 120 volts AC what we also
do realize that for very high power
stuff like a laundry dryer or the
electric stove running them on 120 volt
AC would draw tons of current so those
things run between 220 volts phases at
my home 120 degrees apart to make around
205 volts ac so for the same power it
means half the current I heard at some
homes they invert one phase 180 degrees
to make an actual 240 volt AC is that
true question mark I'm in a house now
that's being renovated let's check the
voltage here the meter was on current
always make sure it is on voltage before
you measure voltage hopefully you can
still measure voltage oh there you go
you have 240 volt AC which means our
hundred 20 volt AC lines are hundred
eighty degrees out of phase so it is
true
they wire the houses differently than
the apartments what's going on here I
hear some electric hissing and arcs what
the hell is going on here it seems like
they've cut a piece of wire here and the
water dripping from that pipe cut into
that hole and the wire is shorting this
might set the house on fire we have to
do something about it
so we have from the kitchen water is
dripping I opened this so the water gets
out and the wires should be down here
I'll try to pull it out before it burns
anything here I found a wire and pull it
out of the ceiling I think I need to do
something about it
I wish I know which fuse was connected
to this guy oh I guess when the universe
doesn't want the house to burn down it
sends me over so that they discover this
short well I don't have my tools with me
to this type of wire so for now we'll
just distract the main fuse jeez now how
do I find my way up yeah there we go
contractors can come and fix it I was
lucky to be there and to catch it
imagine if I just filmed there and
didn't catch the issue who would ever
believe that it wasn't my fault the
house burned down anyway I should be
able to tap into our oven somehow if I
pull it back a little bit thanks to the
stupid design of the outlet I can pull
it back a little bit and expose the
high-voltage lines let's see what
voltage we step on stupid spaghetti down
here to clean it up
with sketchy tight space anyway these
two are the two phases that are 206 volt
different and this one is neutral that's
120 volts difference so it means that
our two phases are 120 degrees apart but
this is to tighten dangerous here
so maybe the perfect location for her
I'm joking of course I'll break my back
trying to pull her body out of there and
why do we need to go back there anyway
when we can pull one of these heating
elements out see if I probe it and turn
this on I read the 205 volt AC here and
these elements can run over thousand
watts so this output is pretty adequate
for me shame I can't plug this directly
in there well this is super sketchy well
let's see if it works okay it works I
guess I can wire an outlet here and plug
it directly in there to be safer okay
here's an idea
I remember for some reason all the
outlets in my kitchen have a separate
phase going to every outlet see there I
think it's because we are running
high-power appliances in the kitchen and
it's wiser to run them from different
phases not to overload the line so if I
can plug the hairdryer between two
phases I'll be in business just need
some plugs and outlets
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[Applause]
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here we are
every wire of the outlet is connected to
the live of one of these plugs and even
if we just plug in one of them it is
still safe to touch the other one
because it's not connected anywhere now
if we connect the hairdryer I was wrong
if you plug in a hair dryer that's on
the live voltage will travel through the
hairdryer to the other plug so this is
live now it's only safe if you plug both
of them in first and then plug the hair
dryer I just bought a new one egg I
thought this was the Holy works even
better I did find you the perfect
solution at least I feel a little bit
better knowing that this video is
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really enjoyed the introduction to
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stuff and I feel like I've been slacking
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