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A real issue between 120Vac and 24Vdc is the fact that at 120V we are working with the LV standards, which poses a shock hazard. Whereas with 24Vdc we are working at ELV (Extra Low Voltage) and the possible shock hazard is classed as minimal. With todays technology on Linear PSU's I would...

John Thanks very much for the reply it was very helpful. Kind Regards

What are the differences between AC1 and AC3 ratings

Guys Thanks for the information it has been most helpful but can I ask one last question. Why would the induction motor draw more current?

What are the principles behind the reason tapping down your voltage on your HV/LV transformers actually reduces energy consumption.

I would like to know the complete procedure of carrying out cable calculatiions from the incoming transformer of an installation through a sub-distribution board, onto a number of distribution boards and finally down to final circuit, i.e. motors etc.. Can anyone help with a step by step...

Thank you redtrumpet for your reply, most helpful.

What is the correct method of earthing a building which has multiple floors and also that contain large vessels,pipework,traywork, conduits and process equipments?

I have had some trouble with logging into my dial up network. I have a number of dial up networks one for the office another for my home and another for my mobile. I have set it up to detect the office but when I am at home it used to detect that I was dialling from home and switch my dial up...

Can anyone explain to the difference between restricted and unrestricted earth fault relays.