Black wire on copper colored screw. Neutral is White on a silver colored screw.
Yes, it does matter which side of the outlet the black wire is connected to. The black wire is typically the hot wire and should be connected to the brass-colored screw on the side of the outlet. Connecting it to the wrong side could result in electrical hazards or malfunctioning of the outlet.
A properly operating catalytic converter should be hotter at the outlet side after a good drive.
The smallest slot is the hot side the larger slot is the neutral slot assuming the outlet was wired correctly.
A timer is a type of contactor. My answer assumes you do not need an additional contactor besides the timers and the timers are operated by the same circuit as the outlet. Each timer and the outlet need connections to the neutral and grounding conductors of the circuit. For the hot wires, you have to run your hot feed to each of the timers on the "line" side of the contacts. If the timer and the "line" side of the contacts are different connections you will have 2 connections in each timer. Then from the "load" side of the contacts you run wires that connect to the hot side of your outlet. At some point you will splice these together so you have only one hot wire connection to the outlet. Remember that timers, contactors, relays, etc., are simply switches operated by various means. You have the hot feed on one side and the "switch leg" to your load. You also have a control of some kind, and in your case your controls are the timers.
It is an outlet that has one hot wire, such as a household receptacle, or two hot wires, such as a dryer outlet (in the US). If the outlet has three hot wires, it would be called a 3-phase or polyphase outlet. These would normally be found only in an industrial setting.
No, it is not safe to touch a hot electrical outlet as it can cause electric shock or burns.
Answer for USA, Canada and countries running a 60 Hertz supply service.Need to know the voltage of the outlet plug. On a 120 volts outlet there is one hot terminal and on a 240 volt outlet there are two hot terminals.
"How do you unhook a hot tub that was connected to an '''outside electrical outlet?'''" .... Just unplug it
The outlet gets hot because of the flow of electricity through it, which causes resistance in the wires and components, leading to heat generation.
The "hot" side of the receptacle is the smaller of the two blade holes. It is on the right with the U ground facing down.
Black wire to gold screw, white wire to silver screw, ground to green screw. If you are using a GFIC outlet then the hot wires coming in hook to the Line side of the GFIC receptacle and the wires going out to other receptacles hook to the load side.
On each side of new receptacle there is a tab between the screws that hold the wires. This tab is bent back and forth until it breaks off. (Usually on the Brass or hot side.) The receptacle is now split and can now be wired for two separate circuits or one outlet switched and the other not. Easy way is to strip the wire under 1 screw back till it will go under the other screw on the same side and tighten.