CONSULTATION – UL508A

or go to the direct use applications (GO)

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We will also come to your facility to provide guidance in the below specifics and other subjects related to industrial control panel design for USA to individuals or groups (no fee, moderate expenses only). training@paneldesignusa.com

Specific Component Requirements (components that you are permitted to use inside an Industrial Control Panel according to UL 508A Supplement SA)

AC Motor Full Load Ampere values (values that you must use for selection of short circuit protectors and conductor ratings within panels – generally higher than the actual nameplate current, which is used for overload protection.)

Minimum Size Conductor inside the panel (To comply with 5 selection requirements – specifically for inside the panel)

Minimum Size Conductor connected to panel (To comply with 5 selection requirements – different from inside the panel)

Branch Circuit Protector and Conductor Rating (multiple requirements for all types of protector device types – includes main and tap conductor ratings)

Feeder Circuit Protector and Conductor Rating (multiple requirements for all types of protector device types – includes main and tap conductor ratings)

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