Electrical Control Panel Design, Building and Testing

UL 508A is the safety standard for building industrial control panels used in the United States. UL Standards & Engagement says it was first published in 2001 and sets requirements so panels are built, labeled and tested to minimize the risks of fire, electric shock and equipment failure. UL Solutions notes that its Supplement SB is the only method specifically noted as being recognized by the US National Electrical Code for setting a panel's short-circuit rating. This course walks through building a UL 508A panel step by step, from layout to test.

SCCR, the short-circuit current rating, is the highest fault current a panel can safely withstand, and a panel needs one when it contains at least one power circuit. UL Solutions says that if a panel has only control circuits, an SCCR is not required, and that UL 508A Supplement SB is the method used to determine it. UL Solutions also notes that terminal blocks have a default SCCR of 10 kA under UL 508A table SB4.1, which is why one low-rated component can limit the whole panel. The course explains SCCR alongside relays, contactors, transformers and terminal blocks.

The workmanship, protection and testing principles apply everywhere; IEC 61439 panels follow the same logic with different standards. The course names the differences where they matter.

No. Every exercise can be done on paper; a small enclosure and a few components make it hands-on.

Only on de-energised panels. Never work live.

Yes. Every module, practice task and assessment. You create an account so your progress is saved and the assessments can be marked. The certificate is the only paid item, and only if you want it.

An EDWartens Certificate of Completion, issued when you pass the final assessment, with a verification code anyone can check. It is not a UL or vendor credential and is never described as one.

The creators named in the Credits block at the foot of this page, on their own YouTube channels. EDWartens did not make the videos and the creators are not affiliated with EDWartens. What EDWartens wrote is the study plan, the notes, the practice tasks and the assessments.

Plan on about 9 hours in all, including the video lessons, notes and practice tasks. It is self-paced, so you work through the nine modules at your own speed.

No. The lab is optional practice. You can skip it whenever you like, and it never blocks your progress, the final assessment or your certificate.

Yes. Every lab level for this course opens in your browser, free, with nothing to install.

The Electrical Control Panel Design, Building and Testing course has 9 modules. It opens with "What a Control Panel Is", goes through "Components", "Sensors, Commons and Noise", "Workmanship" and "Cooling, FAT and Design Data" and ends with "Final Assessment". The full list with minutes is under "What you learn" on this page.

After the Electrical Control Panel Design, Building and Testing course: Name every part of a PLC control panel and what UL 508A covers; Choose relays, contactors, overloads, transformers and terminal blocks, and state the SCCR; Read a PLC wiring diagram and wire 2-wire and 3-wire control. These are the practical outcomes the course is written around, and the final assessment of 15 questions checks them.

For the Electrical Control Panel Design, Building and Testing course, software: None. Hardware: none required; a small enclosure and components make it hands-on. The course itself is free.

Electrical Control Panel Design, Building and Testing is rated beginner. Beginner. Electrical basics assumed. It is written for engineering students, apprentices, technicians and working engineers in electrical design and panel building, and takes about 4.5 hours at your own pace.

Skills from the Electrical Control Panel Design, Building and Testing course (for example: name every part of a PLC control panel and what UL 508A covers) are used in roles such as electrical design engineer, panel designer, electrical technician and maintenance engineer, and in electrical engineer work. The course gives you practical evidence of the skill; it does not promise a job, and employers decide on experience and interview.