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What is a safe way for a non-technical lab person (who barely knows what electricity means!) to trip the GFCI to prove that it works? That is what I would like to know.

crshears, The tester that you indicated only tests whether the GFCI is working. I am looking to trip the GFCI to make sure that it stops power until a reset is pressed. Waross's idea might work.

I had googled how to test GFCI and all it showed was MANY people saying to press reset button.

I have a gfci plug for a small enclosure. is there a way to force a trip to see if the GFCI actually works? The customer is asking for this. Thanks!

Hi, My shop is going to proceed with UL 508A training soon. We use Yokogawa Data Recorders which are CSA certified but they are NOT UL certified. They are 24 VDC devices. Can I include it in my panel and certify that it meets UL 508A specs? I have heard that UL 508A is possible as long as you...

Where do I get a copy of the UL 508A specifications? Do I have to buy it from UL or can it be legally downloaded for free?

Hi, Is there a requirement for labelling inside of a panel for UL 508A? Do I need something saying "120 VAC Power In", "120 VAC Relays", etc?? Thx!

At my company we design PLC/HMI systems and we put everything in a steel enclosure. We only uses UL certified components but recently we have customers in a few states DEMAND that the finished and wired enclosure be UL certified. How is this done? Can I certify this or does UL need to do...