2011

■ Provide a selection list on the Wire Size Lookup on page 712 dialog box
giving this minimum suggested size plus all larger grounding conductor
sizes.
The grounding conductor sizing tables use the following naming convention:
■ AMPG - the table name prefix
■ _{type} - the wire metal type such as CU for copper, or AL for aluminum.
■ _{size} - wire size standard such as AWG, or MM2 for metric.
■ _{standard} - optional suffix to relate it to a specific electrical standards
code. For example, an “_NEC” suffix could mean that the data for the table
parallels the National Electrical Code. A suffixed table name is not necessary
unless you plan to set up the electrical standards database to support
multiple standards.
For example, a table named AMPG_CU_AWG_NEC contains the grounding
conductor sizing information for copper, AWG sizes, and parallels values
found in the National Electrical Code.
DescriptionName
Wire size code. This value can be automatically pushed into a wire type layer
name for the ground wire. For example, “12”, “250KCMIL”.
SIZE
Wire size description shown on the Wire Size Lookup dialog box. For example,
“12 AWG”, “250 KCMIL”.
SIZE_DESC
Maximum amp value associated to this grounding wire size. The value comes
from the result of the expression held in the AMPG_MAX entry of the OPT table.
MAX
Wire insulation tables
The wire insulation tables provide the option to de-rate wire conductor
ampacity based upon expected maximum ambient temperature.
■ Automatically select a default wire size based upon the maximum load
amp value, displayed in the
Select Motor on page 710 or Select Load on
page 711 dialog boxes, and the default insulation type and ambient
temperature rating defined in the W_INSUL and T_AMBIENT entries of
the OPT table.
2024 | Chapter 24 Advanced Productivity