Hi, I am trying to install a Leviton time switch. in the wall box I have a single black, a single white and a copper wire. Here's how I plan to wire it up: wall switch black (hot) black white(neutral) white copper(neutral) green - yellow/red but I don't know what to do the red switch cable. Any advice will be much appreciated. Cheers, Chris

Dear Dean,
Generally speaking, black indicated "hot", like the color of "burnt". White indicates the color of ground. ( ice or snow)
One of your black wires should be "incoming" ( that means have electricity in it NOW", and the other one would go to where the item was that was timed.
After you find which wire is "hot", the other black wire goes to the opposite side of the switch.
You may need to reverse the black wires if it is wired backwards to the ":on" & "off" readings.
The ground would be the white wire.
If you have a green screw, the ground (white) could go there.

In addition to the black, red, green, and yellow/red wires on the switch, there should also be a white wire or terminal marked WH. The black wire on the switch connects to the incoming black wire (line in or hot) inside the switch box. The red wire on the switch connects to the outgoing black wire (to the load) inside the switch box. The green connects to the bare wires inside the switch box. The yellow/red is not used in a single pole application such as yours. The two white wires inside the switch box are twisted together and _also_ connected to the WH terminal (or white wire) on the switch.

Switches are not identified.
Single-pole switches are wired differently than 3-way.
Wire colors are not identified. Some boxes have red and black wires that carry power.
Add a comment and fill out details after studying image and reading information.
I am not there, so you can also add a comment and include in-focus photo of your switches that you posted on Flickr.

Following image shows single-pole switches, with typical black and white wires.
No bare copper ground wire is shown. Ground wires connect to green screw.
http://waterheatertimer.org/images/Single-pole-switches-in-4-g.jpg

So your new switch has 2 brass screws. No white wire connects to single-pole switch. One screw will have 1 black wire that goes to light fixture. The other screw will have 1 or 2 black wires that jumper or connect to the other switches as shown in image.

White wires are usually twisted together and covered with wire nut and pushed to back of box.

Upvote the help.
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For a price, expert works with you while you work on circuit or any do-it-yourself project.
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Open following link to identify timer:
http://waterheatertimer.org/Countdown-timer-horsepower-ratings.html#6230

Leviton 6200 series timer replaces single-pole switch. Will not work for 3-way or 4-way applications.
Timer has 4 wires: Blue, Black, White, Green
Timer Green to bare copper wire.
Timer Black to Hot wire from breaker.
Timer White to Neutral wire from breaker. Neutral wires are white wires that are twisted together and covered with wire nut pushed to back of box. If box does not have neutrals, connect Timer white to bare ground wire.
Timer Blue to Load wire.
If timer does not work, reverse Timer Black and Timer Blue.

As a general rule for timers and dimmers:

The Black dimmer wire connects to black hot wire coming from breaker (122V line)
The red dimmer wire connects to Load (wire going to chandelier)

The wall red wire that is capped could be a couple different things. a) It could go to a second switch that was used to control the chandelier. b) it could be another wire that goes to same ceiling box as chandelier to be used to control a fan, except you don't have a fan. In the second case, if you install a fan with a light, you could control fan and light separately.

The green is a ground wire that connects to bare copper wire in box. The bare copper connect back to main breaker box on the Neutral busbar.
White wires that are twisted together inside your light switch box also connect back to to main breaker box on the Neutral busbar.
The ground wire and neutral are a redundant safety system to protect you from electrical devices and appliances that have 'shorted'
The black hot wire connects back to the circuit breaker.

For example, each circuit breaker controls one area of household lighting. The black white and copper wires leave breaker box in a single romex cable. The romex travels to a junction box in the area where the lights are located. The junction box is usually a switch box or a ceiling box. From the junction box, the romex travels to each other switch, light and receptacle box in the area. So each box has 1 hot and 1 neutral and 1 ground that is connected in a line that leads back to breaker box.

Here's a couple pages that make home wiring easier to understand:
http://waterheatertimer.org/See-inside-main-breaker-box.html
http://waterheatertimer.org/240-v-water-heater-circuit.html
http://waterheatertimer.org/Install-owb.html

One black is will hook up to one of the black wires inside the switch box in the wall and the other will hook to the other black wire in the box, The green will connect to the bare copper wire which is the ground wire.

Switch has 2 black wires. One black is hot wire. One black is wire going to fan. Turn off power. Remove wires from switch and separate. Turn power back on. Using ordinary tester, test each black wire to bare copper ground wire. Only one of the black wires will test hot. The other black wire goes to fan.
Timer black wire connects to black hot
Timer blue wire connects to black wire going to fan
Timer white wire connects to white neutral (in absence of white neutral, connect Timer white wire to bare ground)
Timer green connects to bare ground wire

You need to have a pair of white wires wirenuted and shoved in the back of the box. White to white, black to the hot and blue to the load on the second black. Some of these have a yellow wire for three way connections.

You cannot replace the switch with a switch/receptacle combo because there is no neutral wire. The black and white that you see are both used as hot wires. One is the Line and the other is the Load.

You have to install another 2 wire cable or replace the existing with a 3-wire cable. A 3-wire cable has a black, red, and white, plus the bare ground wire

hook up the red to red
black to black
green to bare wire
tie white wire to other whites in back of switch box in the wall.
If no whites in there cap it off with a wire connector.