ceramicbrad
- Dec 12, 2015
- 4
- Joined
- Dec 12, 2015
- Messages
- 4
Hi. I am trying to learn more about transformers. I have a couple of exit signs I wish to install. There are three wires(input) labelled as follows: 120V(black) 120 V(neutral) and 277V(red). Since I only have 120V I connected up the black and white and wire nut the red... Noted that after a helper installed the unit the transformer was very hot to touch and upon examination(removal of electrical power and removing unit), noted that the red wire was shorted to the metal outlet box(the wire nut fell off).
So my question is, on a three input primary like this, what happens if the 277V becomes shorted while the 120v black and neutral are connected and powered to there respective feed wires....?(explain in electrical terms please).
So my question is, on a three input primary like this, what happens if the 277V becomes shorted while the 120v black and neutral are connected and powered to there respective feed wires....?(explain in electrical terms please).