►
From YouTube: 120 Design Lessons - Day 15 Part 2 - Adding Electrical
Description
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A
Like
this,
so
let's
talk
about
old
work
boxes
on
my
screen.
What
you
see
there
is
that
it
has
this
screw
upper
right,
lower
left
and
what
happens
when
you
screw
that
in
that
tab,
pinches
against
the
back
of
your
plywood
and
it
just
closes
up
it
basically
flips
up
and
starts
pinching
in
that's
how
these
things
work.
So
you
put
it
in
you've
got
your
wires
coming
in
from
so
you
kind
of
feed
the
wires
through
the
back
of
this
thing.
A
A
When
we
put
the
panel
on
we
feed
those
through
the
hole,
then
we
take
old
work
box
feed
the
wires
through
that
put
it
in
the
wall.
That's
that's
kind
of
the
process.
What
we
have
to
do,
and
so
that's
how
the
old
workbox
you
you
can
insert
it.
You
cannot
just
insert
these
boxes,
there's
no
way
to
attach
it
to
to
just
a
hole
in
the
wall.
These
so-called
old
old
work
boxes.
A
They
allow
you
to
stick
it
in
and
have
it
attached
through
those
upper
right
and
bottom
left
screws.
You
guys
see
those
little
tabs
they.
They
basically
turn
up
like
that
and
then
pinch
in
so
there's
the
tabs
in
there
closing
to
the
wall.
When
you
turn
it,
it
turns
up
and
then
it
pinches
in
so
it
grabs
the
actual
sheathing.
A
That's
that's
how
these
things
work.
So
that's
the
old
workbox's
discussion
now,
what's
the
relevant
thing
for
now,
for
now.
A
A
A
A
Inches
it's
like
about
12,
which
I'm
not
sure
they
I
was
looking
at
last.
I'm
not
sure
you.
A
But
I
mean
the
practical
requirement
is
that
don't
put
on
the
floor
like
in
case
you
spill
things
on
it,
even
though
they
do
make
in
the
wall
like
in
floor
outlets?
So
that's
not
really
an
issue,
but
but
it
is
an
issue
like
if
you
do
have
an
in-floor
outlet.
Yeah
water
can
get
in
there.
So
not
the
best
idea.
Perhaps
so,
let's
make
it
in
a
convenient
location.
A
So
if
you
have
the
utility
channel
just
put
it
right
above
it,
the
utility
channel
is
about
about
12
inches.
So
put
it
like
right
above
there,
but
leave
like
when
we're
cutting
out
that
cutout
leave
like
an
inch
of
the
exterior
panel.
So
that
make
sure
you
can
you
don't
break
the
edge
where
you
cut
out
the
box
and
the
only
other
considerations
we
have
blocking
that
which
is
one
and
a
half
or
it's
actually
1.75.
A
Actually,
that's
that's
the
first
determinant
because
the
apply
into
your
plywood
goes
to
the
bottom
of
the
blocking.
You
actually
have
to
have
a
start
1.75
above
that.
So
actually
we
need
to
go
like
two
inches
or
to
be
safe,
like
three
inches,
because
it's
got
that
tab
on
it.
So,
let's
say
three
inches
off
the
edge
is
the
bottom
of
the
box,
so
we're
at
about
15
inches
or
so.
A
So
we
would
drill
through
and
then
put
in
a
reciprocating
saw
blade
so
drill
through
probably
probably
drill
through
two
corners.
So
you
the
opposite
corners.
You
make
a
little
drill
hole
enough
to
get
a
reciprocating
saw
blade.
You
can
go
one
way
and
the
other
it's
kind
of
hard
to
turn
corners
with
those,
so
probably
drill,
two
opposite
corners
and
and
go
the
other
two
directions.
A
B
D
This,
oh
yeah,
you
wanna,
you
can
mark.
A
So
how
do
they
start
that
hole
now?
This
is
this
is
drywall.
How
do
they
start
available?
You
now
want
to
cut
out
that
shape
of
the
box.
So
that's
what
we're
going
to
do
now,
just
cut
it
down
on
the
lines
how
they
starting
to
hold
that
doesn't
apply
to
us.
I
think
in
drywall
you
can
pretty
much
poke
through
drywall
with
a
tool
like
that.
A
C
B
B
B
A
A
But
yeah
we
got
to
say
we
got
to
be
above
our
interior
electrical
channel
blocking,
and
that
is
1.75.
So
we
got
to
be
at
least
1.75
give
it
like
another
inch
for
the
tab,
so
like
2.75
or
just
three
so
next
person,
let's
locate
that
electrical
box
three
inches
up
and
put
it
next
to
the
stud
app
wants
to
go
next.
B
E
C
D
A
A
Well,
actually,
yeah,
but
we
can
do.
We
can
do
the
the
standard
one
for
the
junction
box
itself,
because
that
we
don't
that's
like
behind
we're,
not
cutting
anything
out
for
that.
So
we
can
use
the
old
one,
the
regular
one
and
the
regular
ones.
I
guess
there's
a
price
difference.
The
old
work
is
more
expensive,
so
both
would
work.
A
Well,
not
exactly
they
both
wouldn't
work
because
for
the
you
could,
but
then
you
have
to
cut
out
the
bottom
channel,
which
you
don't
want
to
do.
No
those
wires
got
to
be
hidden
behind.
We
got
to
hide
that,
so
you
don't
want
to
be
cutting
out
the
channel,
therefore,
using
the
standard
one
that
goes
inside
inside
the
panel,
because
we
don't
have
to
do
anything
to
it
in
terms
of
cutting
out
stuff.
It's
we
just
attach
it.
E
E
A
A
C
Standard,
so
it's
the
same
workbox
for
the
junction
and
the
outlet
that
the
outlet
is
screwed
forward,
a
little
further
for
its
faceplate.
A
Well,
actually,
the
concept
is
no
they're
going
to
have
to
be
different
because
the
old
work
box
mounts
to
the
surface
and
as
far
as
the
surface
of
the
utility
channel
itself,
that's
there
is
no
holes
there.
It's
closed
off
because
we're
basically
closing
behind
the
utility
channel,
all
the
wires
and
the
junction
boxes,
but
for
an
outlet
we
need
that
to
go
to
the
outside,
so
the
junctions
are
just
hidden
inside
the
wall,
whereas
the
outlets
they
got
to
penetrate
to
the
outside.
So
you
can
plug
things
in.
A
A
Just
the
lower
half
I
mean
the
tiny
part
like
12
inches
at
the
bottom,
so
that,
let's
see
do
we
have
one
picture
of
that
in
the
work
dock.
Look
at
slide,
number
26
or
25
in
the
current
working
dock.
That's
the
utility
channel,
it's
just
at
the
bottom,
12
inches
or
so
so
it's
yes!
It
does
come
forward.
A
Yeah,
it's
yeah,
it's
a
piece
of
trim,
so
it's
still
the
white
thing,
but
it's
trimmed
up
on
its
edge.
With
that
a
little
bit
of
trim
on
the
top
and
bottom
yeah.
You
have
to
trim
that
so
at
the
expense
of
this
trimming
job
and
and
getting
that
all
closed
up
there
properly.
We
have
the
ability
to
run
wires
very
easily
like
if
you
want
to
make
an
extension
of
your
electrical
system
say
you
do
an
addition.
A
What
are
other
ways
to
do
it?
I
mean
the
industry
standards
once
again,
so
you
can
drill
them
through
studs
and
you
go
on
the
inside
once
you
once
you
do
that
typically
drywall
is
I
mean
once
you
put
in
drywall,
it's
like
it's
major
reconstruction.
If
you
want
to
change
some
electrical
inside
here,
we're
making
it
accessible.
A
I'll
make
it
three,
so
we
need
1.7
well,
actually,
no,
no!
It's
actually
only
1.25,
because
we
said
it's
three
inches
off
the
bottom
of
the
blocking.
The
bottom
of
the
blocking
is
where
the
plywood
ends
up
the
interior
plywood.
So
if
you're
going
three
inches
up
you're
only
like
1.25
inches
above
the
edge
of
the
blocking,
that's
all,
we
need.
C
B
A
A
Okay,
who
wants
to
try
the
next
step
and
what
would
be
the
next
step
so
did
we
get
it?
Positionally
right
is
in
terms
of
3
8
inch.
I
guess
we
should
say
for
the
final
correct
thing,
since
it's
going
to
be
sticking
through
the
plywood,
but
we
got
to
make
it
3
8
inches
sticking
out.
A
Oh
sorry,
I
didn't
see
the
screen
share.
What's
the
status
of
the
okay,
but
maybe
next
next
person
do
that
wants
to
go
okay,
joshua.
So,
let's
make
it
stick
out
a
little
bit
and
specifically
3
8
of
an
inch
so
that
we're
exactly
even
with
a
surface
of
the
interior.
E
C
C
A
I
think,
probably
like
an
update
on
mediawiki
that
we
have
is
probably
a
solution.
A
D
A
Yeah
joshua,
you
see
that
your
step
would
be
to
rotate.
So,
let's
test
the
rotate
function,
those
are
just
simple
objects
there
you
want
to
rotate
them
so
get
into
one
plane.
So,
let's
see,
if
you
know
how
to
do
that,
make
but
you're
not
rotating
this
way,
you're
going
to
rotate
the
other
way,
so
you
wouldn't
be
able
to
rotate
it
from
that
perspective.
C
A
A
C
C
A
B
B
A
Yeah,
so
here
yeah,
so
yeah,
1.25
inches
above
that
means
three
inches
from
the
bottom
of
the
actual
panel
when,
at
the
end
of
the.
D
A
B
E
A
If
someone
else
wants
to
go
next,
let's,
let's
do
yeah,
let's
actually
complete
it.
So
two
things
one
is
rotate
in
the
proper
direction
and
for
the
that's
for
the
junction
box
for
the
actual
outlet
get
it
out
the
three-eighths
of
an
inch
in
the
front.
So
it's
actually
in
the
correct
position,
actual
position.
It's
going
to
be
so
it's
flush
with
the
plywood
once
put
on.
D
D
B
D
D
E
D
A
D
In
the
screen
2x2
so.
A
D
A
D
D
A
D
D
A
D
E
A
A
A
D
A
I'm
gonna
try
it
so.
Okay,
so
first
unit
step,
one.
B
B
B
C
C
A
A
A
A
A
A
A
A
A
A
Box,
let's
draw
the
frame
okay,
so
we
got
the
frame.
How
do
the
wires
go
so
the
if
that's
the
interior,
so
you
got
wires
running
across
from
one
panel
to
the
next
and
then
they
enter
this
box.
They
got
to
go
into
the
back
because
the
holes
are
in
the
back,
so
the
wire
goes
kind
of
wraps
around
back
and
the
junction.
What
we
pre-wire
is
this
short
stub
from
here
into
here
using
wire
nuts,
so
we
can
do
that
today.
So
let's
actually
draw
that.
A
How
do
you
draw
lines?
That's
not
not
cool!
It's
not
easy.
It's
only
to
do.
It
is
just
make
features
on
a
feature.
So
let's
say
this:
one
is
roughly
okay.
A
B
A
A
A
A
A
A
A
A
A
A
A
C
Could
you
use
in
draft
there's
there's
a
d
wire
yeah
tool?
Could
you
use
that
as
well
yeah.
A
A
They,
when
I
get
there
yeah
so
that
tube
now,
let's
see,
is
that
possible
for
it
to
go
like
that,
we're
going
we're
noticing
we're
going
behind.
So
the
geometry.
There
is
important
like
what's
what's
in
the
way
of
what,
if
you
look
at
that,
I'm
sending
that
wire
from
this
junction
box
behind
the
blocking
and
into.
A
Into
the
second
second
junction
box,
so
I
can
pad
that
out
to
like
seven
inches
or
six
inches
yeah.
So
that's
just
effectively
what
happens
there,
but
what
we
got
to
do
in
the
finished
so
in
the
finished
pad
finished
module.
It
will
not
have
this
wire
that
we
can
hide,
but
it
will
have
the
connection
between
this
one
and
the
actual
junction
box.
So
we
cut
a
stub
of
wire
that
goes
into
here
enough
length,
so
we
can
actually
put
in
the
outlet
just
wire
up
the
outlet.
A
When
do
we
want
to
do
that,
since
rough
wiring
means
just
wire
sticking
out
of
boxes,
that's
the
way
we
leave
it
for
in
the
inspection
phase,
so
connect
this
wire
here,
all
it
is,
is
literally
a
wire
that's
put
into
one
box
in
the
other
box,
so
you
can
put
in
a
the
outlet
here
and
your
wire
nut.
What
do
you
know
what
what
wire
nuts
are?
A
A
It's
a
thing
that
you,
you
basically
screw
that
on
the
two
wires
wire
connector.
E
A
Inside
this
junction
box,
that's
why
it's
called
a
junction
box.
You
put
wire
nuts
on
those
things
so
when
we
run
the
wires
at
the
end.
Finally,
just
whatever
wire
goes
into
here,
we'd
either
break
that
break
into
that
wire
and
continue
into
the
box
or
terminate
the
box.
If
you
terminate
that
box,
then
you're
still
connecting
to
the
junction
box
and
that's
what
happens-
and
this
way
this
this
already
has
this
electrical
pre-wired,
so
you
don't
have
to
mess
around
with
putting
in
all
the
wiring.
This
is
now.
A
No
wall
switch
anything
that's
in
here,
so
typically
the
wall
switch
would
be
a
comfortable
hand
height
here.
Maybe
a
wall
light
would
be
up
up
somewhere
here,
but
yeah
I
mean
it's
pretty
simple.
It's
like
at
the
end
of
the
day.
We
run
this
wire
here,
but
we
pre-wire
with
these
boxes
and
with
the
connecting
wire
and
just
the
fact
of
that
you're
cutting
the
wires
you're
stripping
them
you're.
Getting
that
all
ready,
that's
all
steps.
That
means
once
you
actually
put
the
wire
and
put
the
module
into
place.
A
All
those
steps
are
pretty
much
done,
so
you
don't
have
to
have
that
as
a
dedicated
step
at
the
stage
where
each
each
of
the
panels
has
all
the
electrical
inside,
then
it's
just
running
the
wires
from
the
electrical
breaker
panel,
which
means
that
the
electrician,
if
we
hire
an
electrician
like
if
you
have
them,
do
that
I
mean
you
don't
have
to
you,
can
do
it
yourself.
You
can
get
an
electrician.
A
A
A
That's
that's
a
basic,
very
basic
outline
of
a
single
outlet
box,
and
this
would
be
actually
hey.
That's
that's
what
we
would
end
up
with
in
the
house.
A
A
So,
let's
build
today,
let's
build
go
through
organize
the
panels
out
there.
So
in
iraq,
let's
identify
exactly
what
we
have
like.
If
there's
any
other
missing
ones,
we
should
be
able
to
check
off
okay.
Finally,
we've
got
these
panels
in
position
in
order,
so
we're
not
searching
for
them,
probably
move
them
into
organize.
Basically
organize
do
the
quality
control
put
on
all
the
insulation
panels
and
house
wrap
and
then
sample
electrical.
A
So
let's
do
let's
do
like
organize
and
then
let's
build
a
panel
together
and
then
see
if
we
can
divide
that
from
there
see
how
far
we
get
on
the
single
panel
just
go
through
all
these
steps,
integrating
what
we
talked
about
here
and
then
see
if
we
can
break
up
into
people
taking
on
their.
D
A
Yeah
got
wire
and
electrical
boxes,
it
means
you're
using
cutters.
You
cut
the
wire,
it's
a
little
stub.
You
know
we
just
measure
okay
enough
to
go
in
there
and
stick
out
say
six
inches
out
the
box,
so
you
have
enough
working
length
for
once
you're,
attaching
the
say
the
outlet,
specifically
it's
the
white
15
amp
wire.
Typically,
a
lot
of
these
are
50
amp
outlet
boxes.
A
No
they're
not
old
work
boxes.
We
have
the
standard
ones
which
we
need
to
do
in
the
interim,
as
we
discussed
about
the
the
code
inspection
so
once
we
have
this,
then
once
we,
while
we're,
simulating
that
so
that
we
can
make
the
placeholder
happen
for
for
the
real
build
like
right
now,
we
just
need
a
placeholder
for
where
we're
going
to
attach
things.
Then,
when
we
do
the
panel
cutouts,
we
can
do
that
if
we
can
identify
okay,
this
is
our
well.
A
D
C
B
A
A
This
wall
detail,
the
modular
utility
channel,
did
take
some
thinking
about
it,
because
you
have
to
consider
how
the
codes
work,
how
our
modularity
works,
how
the
interconnection
works
that
you're
not
puncturing,
wires,
there's
actually
quite
a
bit
in
there.
So
it's
not
like
once
you
build
it,
it's
very
transparent,
but
before
you
get
to
it
it's
it
did.
Take
us
a
little
bit
of
time
to
kind
of
arrive
at
this,
and
I
can't
say
I
know
anybody
that
does
it
this
way.
A
As
I
said,
the
the
standard
is,
is
holes
through
the
studs
and
other
than
that,
like
no
innovation
has
happened
over
the
last
century,
so
it's
I
haven't
seen
other
people
doing
this.
A
C
So
we're
going
to
mount
electrical
boxes.
Are
we
going
to
build
each
one
channel
with
like
2x4.
A
A
So
if
our
cad,
so
the
ideal
procedure
would
be
we,
we
quality
control
all
the
panels
to
make
sure
that
all
the
utility
channels
are
uniform.
So
maybe
you
know
in
case
we
missed
some
that
are
off.
So
that's
one
thing,
so,
basically,
the
blo
blocking
location
is
the
critical
both
top
and
bottom,
because
that
determines
whether
panels
fit
at
all
right,
whether
they
end
up
at
the
right
place.
So
that's
that
that's
the
major
quality
control
point
as
well
as
some
things
like
okay
are,
is
the
blocking
flat.
A
I
I
did
see
some
some
that's
like
sticking
out
a
bit.
We
might
want
to
possibly
fix
some
of
those.
The
only
other
quality
control
point
I
know
we
do
have
to
do
is
for
the
doors
and
windows
you
want
to
replace
the
outer
studs.
So
it
goes
all
the
way
to
the
top
like
we
discussed
before.
So
we
want
to
trim
the
one
and
a
half
inch
of
off
each
side
to
make
that
happen.
So
that's
we
can
do
that
in
in
bulk
today,
as
we
go.
A
Yeah
yeah
so
take
take.
The
circular
saw
we
run
it
up
there.
You
can
do
it
in
place.
You
don't
have
to
take
it
off,
so
you
don't
have
to
dismount
too
much
too
many
things
just
take
off
the
outer
stud
cut
the
cut
the
two
by
twelves
and
then
put
the
longer
pre-cut
stud,
typically,
the
nine
foot
pre-cut
for
the
first
floor,
the
eight
foot
pre-cut
for
the
second
floor,
so
not
too
bad
but
yeah
that
that
definitely
simplified
simplifies.
It
makes
it
easy
to.
A
We
saw
how
fragile
those
headers
were
when
we
were
carrying
the
modules
so
yeah.
That's.
This
definitely
will
help
because
you
don't
stabilize
the
the
headers
like
that
we
have
panels
coming
into
each
other.
That's
the
stabilization
point
and
also
the
top
plate
being
put
on
that
stabilizes.
Everything.