Industrial control panel manufacturers must take many rules and regulations into account when they design and produce control circuits. As the person in charge of supervising the installation process, you need to consult with the proper sources too. Here are some helpful tips on which sources to turn to and how to avoid common trouble spots, before you install your panels.
What is a Control Panel?
The NEC defines control panels as power circuits with fewer than 600 volts. They control power to industrial equipment, while not using the main power source. In other words, a 480-volt motor usually has a 120-volt control circuit.
Standards
When designing and wiring panels, industrial control panel manufacturers consult with the NEC, UL 508A and NFPA article 79. It’s also important to understand NEC article 250, which has to do with grounding and bonding. This can help you avoid many common issues that are difficult to trace.
Conductor Ampacity
You must know the full load current of all loads in the circuit, and then add 125 percent of the largest motor’s FLC. Add in all other FLC ratings, assuming that everything runs or starts up at the same time. If no motor info is available, industrial control panel manufacturers usually use the formula “motor amperage multiplied by six,” to figure FLC.
Environment
Are there corrosive materials nearby? Is the ambient temperature high? In some cases, panels need their own air conditioning systems. Knowing details on the environment helps you choose the right size and type of panel.
Talk to Professionals
If you have limited experience with control circuit design and installation, consult with trusted industrial control panel manufacturers. They have years of experience in the industry and can help you choose the right panel, components, conductors, and other materials. In fact, a reputable manufacturer can give you a custom panel, designed specifically for your needs.
