2011

Circuit Builder goes green
Circuit Builder now provides engineering analysis/green calculations in the
area of power conductor size versus energy losses. Designing to meet minimum
code requirements can conflict with green design.
During the code requirements analysis, Circuit Builder displays parallel energy
loss calculations so you can make better green design decisions. For example,
suppose you must oversize the conductors for a motor to reduce conductor
heating losses. This action results in a higher initial cost. But this higher cost
can potentially be recovered many times over in reduced energy losses in the
wiring over the lifetime of the installation.
For More Information on page 712
Circuit Builder - power feed support
Circuit Builder now provides power feed circuits for insertion.
■ Option to add a source arrow symbols at end of the power feed bus.
■ Option to add a generic load box representation at the end of the power
feed bus.
■ Supports defining a user-created load symbol, for example a variable speed
drive symbol, for insertion at the end of a power feed bus.
■ Support for adjusting the load representation based on the rung spacing.
For More Information on page 693
Circuit Builder - additional features
■ Wire conductor sizing based upon electrical code requirements.
■ Support for split-parallel conductor sizing is available. You can choose to
substitute multiple, smaller diameter conductors to meet the equivalent
ampacity requirement of a single, large diameter conductor.
■ Fuse, breaker, disconnect switch, and overload calculations based upon
electrical code requirements.
■ Circuit Builder can be set up to predefine motor description text,
installation, location, and text description for individual components in
the circuit.
■ Insert a new circuit and reference an existing circuit. This option can
transfer the values from the existing circuit to your new circuit.
26 | Chapter 1 AutoCAD Electrical What's New