How do low power draw devices not cause problems?

by TheCatWhisperer   Last Updated January 13, 2018 19:21 PM

Recently, a home owner tied a hot wire directly to a neutral and asked about it on this site. Fortunately, his unfortunate mistake did not result in anyone being injured. As an answers point out, usually a device drawing current reduces the load on the wires and prevents them from heating up.

However, this got me thinking... how to green and low power draw devices, such as a led bulb or cell phone charger draw enough current to prevent this from happening?

Are they less efficient than I imagine? Or need more current than I am thinking?

15 amps is a lot of current, and it does not seem to me that connecting a low power-draw device would be radically different than connecting a hot and neutral wire directly.

Why did directly connecting the hot and neutral wires in the linked question draw enough current to trip the breaker?



Related Questions


Is this consumer unit wired safely?

Updated August 19, 2015 17:09 PM

How should I end this wiring?

Updated May 25, 2017 21:21 PM

Can I use a cord and plug to power a wall sconce?

Updated July 01, 2015 13:09 PM


Is this lighting fixture safe?

Updated November 29, 2016 08:09 AM