2011

■ Automatically calculate or recalculate suggested wire sizes in the Wire Size
Lookup
on page 712 dialog box as various insulation and temperature
de-rating factors are applied.
The wire insulation tables use the following naming convention:
■ INSUL - 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 INSUL_CU_AWG_NEC contains the wire insulation
information for copper, AWG sizes, and parallels values found in the National
Electrical Code.
DescriptionName
Insulation type code.INSUL
Insulation type description shown on the Wire Size Lookup dialog box.INSUL_DESC
Standard, maximum temperature rating for the insulation type.TEMP
A series of wire conductor ampacity de-rating factor values for maximum ambient
temperature. Columns can be added or deleted. For example, if 30C is the
minimum ambient temperature rating, the 25C column can be removed.
25C-80C
674 | Chapter 9 Circuits