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Understand the difference between feed through lugs and breakers.
Type:
Tutorial
Length:
5 min.
Transcript
00:04
Feed through lugs for electrical equipment appeared in the 2020 release of rev.
00:09
It provides the option of connection between panel boards without the use
00:13
of a breaker and can give a more accurate account of connections,
00:16
loads and distribution within your project.
00:20
In this project, we will add equipment to an electrical room,
00:23
create lighting circuits and then review the connection
00:27
options when creating circuits between panel boards.
00:30
Finally,
00:31
we will create a news panel schedules to understand the difference between
00:35
creating circuits using feed two logs and connection to a breakup.
00:41
First use the create similar option from the right mouse button menu
00:46
to add another panel board into the electrical room.
00:49
Ensure tag on placement is selected,
00:53
then edit the tag to LP two
00:59
from the project browser. Open the view one lighting
01:04
then create a circuit for the lighting fixtures in the
01:07
three rooms to the lower right of the floor plan
01:11
and connect to LP two
01:16
from the analyzed tab of the ribbon. Create a panel schedule for LP two.
01:22
A review of the panel schedule shows the circuit
01:25
created and the circuit numbering that starts from one
01:31
next. We will connect panel board, LP two to LP one.
01:37
If there are available slots, you can choose whether to connect to a breaker,
01:41
an LP one or to use the feed through lugs.
01:43
Option.
01:45
If there are no available slots,
01:47
the only option is to use V two logs to make the connection.
01:52
A review of the panel schedule for LP one shows there is capacity.
01:57
So let's go ahead and connect LP two through a breakup.
02:02
Open the view one electrical room,
02:05
select panel board. LP two,
02:09
create the circuit and select LP one from the
02:13
drop down list of available panels to connect to
02:18
when there are available slots,
02:20
you could choose whether a circuit is connected to a breaker
02:24
or the feed through lug at the time of creating it
02:27
or connection type can be changed after it has been created.
02:32
Choose breaker from the drop down list
02:36
from the project browser. Open the panel schedule for LP one
02:41
here we can see LP two connected and its loads totaled on this panel schedule.
02:46
Again, the circuit numbering starting at one.
02:50
Next,
02:51
we'll look at changing the connection type for this circuit to feed through logs.
02:56
Open the view one electrical room
02:59
and select the circuit between LP one and LP
03:03
two using the tab key in the left mouse button
03:07
from the ribbon, change the connection type to feed through lugs.
03:15
A review of the panel schedule for LP One
03:18
shows that LP two is no longer connected to this panel through a breaker.
03:25
Open the panel schedule for LP two,
03:28
the circuit numbering for this panel starts at number one,
03:32
the same as the panel schedule for LP one
03:35
as this panel is fed from LP one.
03:38
We have the option of continuing the circuit numbering
03:42
from the properties of the panel schedule change the
03:46
circuit numbering option from default to continue numbering.
03:52
The circuit numbers have now updated to follow
03:54
on from the circuit numbering of the feeder panel
04:00
feed through lugs allows designers to create a more accurate
04:04
account of the connections and electrical distribution in a project.
04:09
As panel boards are connected,
04:11
the connection type can be set and altered
04:13
afterwards to suit the changing in electrical design.
04:18
The connection type is also reflected in panel schedules providing
04:22
an accurate picture of the total loads on each panel.
Video transcript
00:04
Feed through lugs for electrical equipment appeared in the 2020 release of rev.
00:09
It provides the option of connection between panel boards without the use
00:13
of a breaker and can give a more accurate account of connections,
00:16
loads and distribution within your project.
00:20
In this project, we will add equipment to an electrical room,
00:23
create lighting circuits and then review the connection
00:27
options when creating circuits between panel boards.
00:30
Finally,
00:31
we will create a news panel schedules to understand the difference between
00:35
creating circuits using feed two logs and connection to a breakup.
00:41
First use the create similar option from the right mouse button menu
00:46
to add another panel board into the electrical room.
00:49
Ensure tag on placement is selected,
00:53
then edit the tag to LP two
00:59
from the project browser. Open the view one lighting
01:04
then create a circuit for the lighting fixtures in the
01:07
three rooms to the lower right of the floor plan
01:11
and connect to LP two
01:16
from the analyzed tab of the ribbon. Create a panel schedule for LP two.
01:22
A review of the panel schedule shows the circuit
01:25
created and the circuit numbering that starts from one
01:31
next. We will connect panel board, LP two to LP one.
01:37
If there are available slots, you can choose whether to connect to a breaker,
01:41
an LP one or to use the feed through lugs.
01:43
Option.
01:45
If there are no available slots,
01:47
the only option is to use V two logs to make the connection.
01:52
A review of the panel schedule for LP one shows there is capacity.
01:57
So let's go ahead and connect LP two through a breakup.
02:02
Open the view one electrical room,
02:05
select panel board. LP two,
02:09
create the circuit and select LP one from the
02:13
drop down list of available panels to connect to
02:18
when there are available slots,
02:20
you could choose whether a circuit is connected to a breaker
02:24
or the feed through lug at the time of creating it
02:27
or connection type can be changed after it has been created.
02:32
Choose breaker from the drop down list
02:36
from the project browser. Open the panel schedule for LP one
02:41
here we can see LP two connected and its loads totaled on this panel schedule.
02:46
Again, the circuit numbering starting at one.
02:50
Next,
02:51
we'll look at changing the connection type for this circuit to feed through logs.
02:56
Open the view one electrical room
02:59
and select the circuit between LP one and LP
03:03
two using the tab key in the left mouse button
03:07
from the ribbon, change the connection type to feed through lugs.
03:15
A review of the panel schedule for LP One
03:18
shows that LP two is no longer connected to this panel through a breaker.
03:25
Open the panel schedule for LP two,
03:28
the circuit numbering for this panel starts at number one,
03:32
the same as the panel schedule for LP one
03:35
as this panel is fed from LP one.
03:38
We have the option of continuing the circuit numbering
03:42
from the properties of the panel schedule change the
03:46
circuit numbering option from default to continue numbering.
03:52
The circuit numbers have now updated to follow
03:54
on from the circuit numbering of the feeder panel
04:00
feed through lugs allows designers to create a more accurate
04:04
account of the connections and electrical distribution in a project.
04:09
As panel boards are connected,
04:11
the connection type can be set and altered
04:13
afterwards to suit the changing in electrical design.
04:18
The connection type is also reflected in panel schedules providing
04:22
an accurate picture of the total loads on each panel.
Understand the difference between feed through lugs and breakers.
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