That depends on your meaning. Are you talking about turning off the breaker when you screw in a new lightbulb or fluorescent tube? That isn't necessary, but it is a good idea to turn off the switch.
If you're talking about installing a new light fixture, yes, you should always turn off the breaker or remove the fuse. Many electricians, if they are sure of what they're doing, will simply make certain that the light switch is turned off.
Yes, you need to turn off the power when you change (replace) a light switch, since at least one of the terminals on the switch will always have power if the circuit is energized at the panel.
It can be dangerous my dad does it but you need to turn the power off.
To make a simple series circuit to light a bulb, the simplest components are a power source (such as a battery); a switch (to turn the power on or off); the bulb (obviously !); and some wires to connect everything together.
you probably can't, you need a neutral and a live wire to make a fan work. switches normally only have live wires.
Your question is rather vague. Are you asking how do you determine the reactive power of a capacitor bank necessary to improve the power factor of a load (in which case, is it a single-phase or a three-phase load), or are you asking how to convert a capacitor bank's capacitance into reactive power?If the former, then you need to know the reactive power of the load before power factor-improvement, and the resulting reactive power after power-factor improvement, and the difference between these two will tell you how much reactive power you need to add in the form of capacitors.
Most people can install an bathroom vanity light if the electrical box and light switch are already installed. You just need to make sure you turn of the power while you are installing the light and be certain that you are attaching the wires correctly. If you are not comfortable installing the light fixture on your own, or if you need to install the electrical box for mounting and the light switch, then you will need to contact a licensed electrician to install it for you.
No.
Before installing an operating system, you need to consider how big you hard drive is. You also need to consider what types of programs you will be using.
No, it should be internally lubricated so there is no need to lubricate the starter.
Don't HAVE to, but it is a good idea.
if you mean expansion packs yes
umm..i don't think you will need to install sims 2 before installign sims 3.
Yes, most definitely.
You'd need to branch the circuit before the switch. This can be immediately before the switch, in the box that holds the switch, but you can't get constant power from a switched circuit after its been switched.
you dont need an instruction just top up the wire of your first and 2nd light,
There is no need to uninstall an older version of QuickTime before updating to QT 7.6.
Before installing hardwood floors, you should know the size and costs of this project. YOu can find tips at http://www.hometips.com/diy-how-to/installing-hardwood-floors.html The most important thing to know before installing hardwood floors is the amount of flooring you will need. Make sure you pick out a floor that is durable and will last for a long time. Also, low maintenance floors are great!