Control Panel USA
UL 508A
STANDARD FOR SAFETY:
Industrial Control Panels
SINGLE PURPOSE SHORTCUTS:
Based on your inputs of voltage and circuit type prompted in this tool, all spacings will be given between adjacent live parts and metal within a UL 508A cabinet.
UL 508A: 29: Power Conductor Sizing.
Based on your inputs of current, and temperatures prompted in this tool, the size (gauge) of power wires and cables will be given.
UL 508A: 31: Branch Fuse-Breaker-Conductor Sizing.
Based upon your entry of load HPs and amps to the loads connected to the panel, the size of short circuit rated branch fuses, breakers, and the conductors needed will be given.
UL 508A: 32: Feeder Fuse-Breaker-Conductor Sizing.
Based upon your entries in amps from a feeder protector distributed to the branches and other power circuits in the panel, the size of feeder fuses, breakers, and the conductors needed will be given.
UL 508A: 50: AC Motor Currents
Based on your inputs of HP, voltage, and winding prompted in this tool, full load amps for AC motor loads will be given for use in the selection of components and conductors.
Fundamental calculation tools for more general and related use.
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RELATED ENGINEERING INFORMATION:
A visual aided growing group of presentations of some of the fundamental design considerations related to design of an Industrial Control Panel.
An overview of UL, NFPA and NEC, ANSI, and how they apply to the design of installations, machines, and industrial control enclosures in the USA.
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RELATED ARTICLE LINKS:
UL 508A Informational Articles:
Links to Third Party sources (companies and others not affiliated to Control Panel USA): On-line articles selected from many search results based on relevancy and usefulness have been organized by CP-USA so as to open up or narrow down well presented information in order to collect and focus the most relevant using filters by multiple check boxes.
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PANEL SHOPS INFORMATION:
UL 508A Control Panel Builder Shops:
Links to sites of CP-USA selected companies (based on their specialities, industries, size, and location) that have UL approval: Check box selections according to your own criteria so as to focus on most relevant for your particular requirements. (For Panel Shops wishing to join please use this form
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QUICK TOOLS
AWG-SQMM Conductor Equivalence
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CONTACT: