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There is an ongoing debate amongst my colleagues and I. Is it better to put VFDs near the top of your enclosure, or near the bottom? I have designed my panels like I read a book. Left to Right, Top to bottom. The VFDs being output side of the control panel, I put them on the bottom. I put the PLC near to the top. My thoughts are, you will likely need to access the PLC or view it more often than the VFDs, and I can isolate the voltage of the Motor Leads to the bottom of the panel, in lieu of bringing them to the top. BUT, the argument here is that since the VFDs produce heat, put them at the top to isolate the heat near the top. I counter that by if you put them on the bottom, the whole panel then can be used to dissipate heat. Not just the top. What are your opinions?