What is the molecular geometry of PBr5?
What is the molecular geometry of PBr5?
trigonal bipyramidal
What does polarity mean in electrical terms?
Electrical polarity is a term used throughout industries and fields that involve electricity. There are two types of poles: positive (+) and negative (−). This represents the electric potential at the ends of a circuit. A battery has a positive terminal (+ pole) and a negative terminal (− pole).
How do you determine electrical polarity?
You can check the polarity of your outlets with a digital multimeter.
- Plug the black lead into the middle input at the bottom of the multimeter and plug the red lead into the right input.
- Insert one of the leads into the longer vertical opening in the outlet.
Which wire is hot when both are same color?
In most modern fixtures the neutral wire will be white and the hot wire is red or black. In some types of fixtures, both wires will be the same color. In this case, the neutral wire is always identified by some means.
Which wire is load?
With the first device, the line is the wire running from the service panel to the device, and the load is the wire running from the first device to the second device downstream on the circuit.
What happens if you wire a GFCI backwards?
If you mistakenly connect the LINE wires to the LOAD terminals, the GFCI will not reset and will not provide power to either the GFCI receptacle face or any receptacles fed from the GFCI.
Will GFCI work with reverse polarity?
Since testers establish a test circuit between hot and equipment ground, if the receptacle into which the tester is plugged is wired with reverse polarity, there will not be a voltage across the tester and test current will not flow. The GFCI will not trip and thus the GFCI might erroneously be considered defective.
What happens if an outlet is wired backwards?
If your outlet’s polarity is reversed, it means that the neutral wire is connected to where the hot wire is supposed to be. This may not sound like a terrible thing, but it is. There is always electricity flowing out of an outlet with reversed polarity, even if an appliance is supposed to be off.