2011

Sets the wire metal type. Directs Circuit Builder to use
specific tables from the electrical standards database
Type/method
for that wire metal type. The available values are extrac-
ted from the electrical standards database table names.
Sets the wire insulation and temperature rating type.
The available values are extracted from the electrical
standards database file.
Insulation
De-rating factors
Specifies whether to include a continuous load de-rating
factor in the calculation of the wire ampacity. For ex-
ample, continuous equals three hours or longer.
Continuous load correction
When Continuous load correction is on, sets the de-
rating factor. This value is used in the total de-rating
factor used to calculate wire ampacity.
Specifies whether to include a fill correction de-rating
factor in the calculation of the wire ampacity.
Fill correction
When Fill correction is on, sets the range of current
carrying conductors that are grouped in a common
conduit, raceway, or cable.
When Fill correction is on, sets the de-rating factor for
the selected fill range. This value is used in the total
de-rating factor used to calculate wire ampacity.
Specifies whether to use a de-rating factor for an elev-
ated ambient temperature.
Ambient temperature correc-
tion
When Ambient temperature correction is on, sets the
range of maximum ambient temperature.
When Ambient temperature correction is on, sets the
correction factor value. This value is used in the total
de-rating factor used to calculate wire ampacity.
Displays the calculated total correction factor based on
the individual de-rating settings. You can manually set
Total correction
the total de-rating value. The value is multiplied with
the defined ampacity to calculate the actual de-rated
ampacity of the wire.
714 | Chapter 9 Circuits