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Hi Doc hudson, Thanks a lot for your advice, better to be safe than sorry, right? I will bear it in mind, every single word. Doing electrical task could always be a new thing, you don't expect everything, you just prove and assure them in stead, one by one. Like a child, needs more attention...

Yes kerching, this is an article i recently found, guessed you guys might find some interest in that you know. Optical coupler (OC), also known as optical isolator or optocoupler, is a kind of electro-optical switching device that transmits electrical signals in light. It uses light as a medium...

Thanks a million guys, you are all so sweet, i will and i want to read carefully all what you kindly suggested me, word by word, and check out all the links you kindly gave me, because i don't want to betray your kindness you know, at the same time i could also fortunately educate myself and...

I guess i mean by pen tester is what is commonly known as a neon tester. A device where i put it on an appliance and put a finger on the end. I become the earth and if it lights up the item i am touching is live. Make sure my test on a point that is not painted - eg screw through casing. A...

Hi all, After completing my plumbing NVQ I am now completing my gas portfolio after just spending a week placement with British Gas. Part of the boiler service is to complete a Dynamic Assessment Checklist and so first perform a safe electrical isolation check( Have a further understanding of...