2011

One-line circuit templates
One-line circuit templates use the same marker block concept as three-phase
motor and power feed circuit templates. However, there are a few differences.
There is a single line wire that represents a multi-wire bus. Most of the one-line
circuit templates contain a special "bus-tap" symbol.
The bus-tap symbol can have two functions:
■ Provide an anchor point for the one-line circuit representation that begins
at this location.
■ Break into the one-line bus where the circuit connects.
On a dual circuit one-line template, there are three of bus-tap symbols. One
at the normal point where the circuit ties into the bus. There is another version
of the symbol on each of the two circuit "legs", each marking the point where
that part of the dual circuit starts. These bus-tap symbols allow various reports
to report accurately on a one-line circuit, whether a single circuit or a dual
circuit representation.
The following bus-tap symbols are supplied:
■ HDV1_BT_1-.dwg - with “dot” for horizontal one-line circuit
■ VDV1_BT_1-.dwg - with “dot” for vertical one-line circuit
■ HDV1_BTT_1-.dwg - “tee” connection for dual horizontal circuit
■ VDV1_BTT_1-.dwg - “tee” connection for dual vertical circuit
■ HDV1_BTL_1-.dwg - “corner” connection for dual horizontal circuit
■ VDV1_BTL_1-.dwg - “corner” connection for dual vertical circuit
NOTE A WDTYPE attribute with a “1-1” value, identifies a bus-tap symbol.
Electrical standards database file
Circuit Builder uses an electrical standards database to define default values,
define engineering calculations, annotate circuits, and provide wire size
recommendations. The electrical standards database,
Electrical standards database file | 663