2011

■ 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.
Circuit Builder database
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,
ace_electrical_standards.mdb, is located in the catalog folder. The default
location is:
■ Windows XP: C:\Documents and Settings\{username}\My
Documents\Acade {version}\AeData\Catalogs\
■ Windows Vista, Windows 7: C:\Users\{username}\Documents\Acade
{version}\AeData\Catalogs\
Sizing and wire type values are based on information from the electrical
standards database. Circuit Builder looks for a match on the motor size, supply
voltage, and phase. On a match, Circuit Builder provides the Full Load Amp
value, recommended motor power conductor size, and suggested rating values
for various branch circuit protection elements such as circuit breakers, fuses,
and disconnect switches.
The electrical standards database also allows Circuit Builder to provide
engineering estimates and “green” calculations in the area of power conductor
size versus energy losses. Designing to meet minimum code requirements can
conflict with green design. For example, designing to the minimum conductor
size for a given load can provide short-term savings on material cost but run
up longer-term expense due to higher heating loses in the wiring. Over the
life of the installation, the energy lost in heating up the minimum-sized wiring,
instead of reaching the load to do useful work, could be substantial.
During wiring sizing, Circuit Builder displays not only a list of the valid wire
sizes meeting the ampacity requirements of the load, but also a list of the
estimated maximum energy loss cost for each wire size. This set of calculations
allows you to make better green design decisions. For example, you decide to
oversize the conductors for a motor to reduce conductor heating losses. This
results in a higher initial cost for material and installation labor. However,
Circuit Builder database | 2015