LEDs may cause retinal toxicity at occupational domestic illuminance

Re:LEDs may cause retinal toxicity at occupational domestic ... by Spare_account on Friday January 06, 2017 @01:10PM (#13338611)

Intriguing. I'm from the UK and I believe we do it differently here because I have an RCD on my earth bar in the consumer unit. The RCD detects current on the earth wire and cuts power to the circuit instantly. An earth fault doesn't trigger the circuit breaker, it triggers the RCD. A fault between live and neutral would trigger the circuit breaker.

If I'm understanding you correctly, in the US the ground wire is functionally identical to the neutral due to the bonding. Therefore (this is my own deduction and I'd appreciate being corrected if I'm wrong) you could, in theory, invert the ground and neutral wires in the plug of an electrical appliance and there would be no change in the behaviour or safety of the appliance?

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Re:LEDs may cause retinal toxicity at occupational domestic ... by lightedman on Friday January 06, 2017 @02:25PM (#13339372)

"you could, in theory, invert the ground and neutral wires in the plug of an electrical appliance and there would be no change in the behaviour or safety of the appliance?"

Generally, no. I've seen backwards wiring jobs cause 48-80VAC to run through the casing of microwaves (they usually use the casing as a floating ground.) Any wiring inversion will usually cause some issue somewhere.

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Re:LEDs may cause retinal toxicity at occupational domestic ... by Spare_account on Friday January 06, 2017 @02:58PM (#13339650)

This is fascinating, I'm reading lots of resources attempting to understand how this works. Thanks for your responses, I appreciate you taking the time to do that.

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Re:LEDs may cause retinal toxicity at occupational domestic ... by Freestyler_3 on Friday January 06, 2017 @05:19PM (#13340829)

Maybe this helps

http://ecmweb.com/code-basics/grounding-and-bonding-part-2-3

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