Speaker wire should be sized to the maximum wattage that the speakers can handle. Use the following formula Amps = Watts divided by Voltage of the system driving the speakers.
No because speaker wire does not have enough insulation to be safe for power.
No, they do not have to be the same length at all. You can use whatever length you need to run to your speakers. (should not be longer than 50 feet or so)
No! Most lamp cords are made with 18 guage wire, some speaker wire is made with 18 guage wire too but the insualtion of the wire is very different. Both wires have insulation for their intended uses. Supplying a lamp with line voltage and supplying a speaker with low voltage are very different. The speaker wire is not meant to carry line voltage and may overheat and or melt.
Almost all circuit breakers are rated for copper (cu) or aluminum (al), there is a label on every breaker made, as long as it has the (al) marking it is suitable for use with aluminum wire
The voltage of the solar panel is less important than the total amperage. Proper wire size is determined by amperage that will be going through the wire. Wire INSULATION determines the voltage that a wire can carry.
No because speaker wire does not have enough insulation to be safe for power.
Yes.
You can but it is not a good choice, you need flexible wire for speakers.
If you use a heavy AWG speaker wire, you can easily go over 60 feet or so, depending on the speaker.
Use speaker wire that is shielded better and has a lower resitance.
take the speaker out and run 2 wires from the speaker one on positive side and one on the negative side the use a 9volt battery and touch one wire to each side the speaker should make a popping sound moving either up or down depending on which wire you have where. if you touch the positive wire on the positive side of the battery it should move out and if reverse should move in. if it does not do anything the speaker is blown.
It is better to use 16 gauge or 14 gauge speaker wire for your home theater applications.
No, they do not have to be the same length at all. You can use whatever length you need to run to your speakers. (should not be longer than 50 feet or so)
No! Most lamp cords are made with 18 guage wire, some speaker wire is made with 18 guage wire too but the insualtion of the wire is very different. Both wires have insulation for their intended uses. Supplying a lamp with line voltage and supplying a speaker with low voltage are very different. The speaker wire is not meant to carry line voltage and may overheat and or melt.
The Speaker wire to use as the negative really doesnt matter when installing new wire as long as all speakers are hooked up the same way. Normally though most people use the solid colored wire as the negative.
That depends on the speaker wire. Understand that the 5 halogen bulbs will result in about 8-1/3 Amps. That's pushing it for some speaker wire. The 12 volts falls in the category of low voltage wiring, so speaker wire insulation probably be okay. But if it's normal, light duty speaker wire, it will probably overheat if you try to push that many amps through it.
the answer is YES, use a test light to find the + and - wires (should be one ground wire and two hot wires [one hot all the time for your clock & one hot only when the key is on]) in order to find which speaker is which, use a 1.5 volt battery to make a popping sound in the speaker (won't hurt the speaker) and then the solid color wire will be your positive & the wire with the stripe will be your speaker ground.