Another thought
Be careful. This question can have more than one valid answer. For instance, table 310.16 may apply in some circumstances, but if the 200A service in the question happens to be a single-phase service in a dwelling, there is a different table (310.15(B)(6) just for the purpose of sizing service conductors in that case. It indicates that 2/0 copper OR 4/0 aluminum would be the correct choice.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
The wire size is based on the connected load or the size of the sub panel main bus bars. Once this determined then the proper over current protection has to be installed.
It is a complicated job in as much as you have to know wire sizes, ampacity of wires and proper electrical workmanship. My suggestion is, for such a project it should be left to a licensed electrical contractor to take out the proper permits and call for proper inspections. By taking this route it will leave you confident that if any mishaps happen to the installation down the road your insurance company will be behind you 100%.
Incomplete information. You must mention the total load, system voltage or the maximum current expected.
0 or if it a main breaker in a service entrance you can go down to #2 <<>> A #3 copper wire with an insulation factor of 75 or 90 degrees C is rated at 100 and 105 amps respectively.
For a wire classified under American Wire Gauge standards, 26 gauge wire is 0.0159" (0.40386 mm) in dameter. For a wire classified undere metric wire gauge standards, a 26 gauge wire is 2.6mm in diameter. Metric gauges are calculated simply by multiplying the diameter, in mm, by 10 and therefore increase as the diameter increases, unlike the AWG standard.
High voltage is used to transfer power over long distances ONLY because the gauge of the wire can be smaller. Power transfer is always most efficient at the operating voltage if the size of wire is not an issue.
American Wire Gauge. Measure the thickness of the cable.
The lower the gauge the heavier, sheet metal, wire & shotguns...
You need to know the current to determine the wire gauge.
Absolutely for maximum power transfer impedance's are to be matched a low wire gauge will insure that the power is not dissipated on the wire as appose in the speakers.
A good wire gauge for car radios is 18 gauge. This wire runs between the radio and its power supply from the vehicle.
It is the ground wire for the fuel pump. The Red wire is the power wire for the pump. the dark blue is the signal wire for the gauge and the black is the ground for the gauge.
6 gauge
the answer is gauge its a measurement of thickness in wire the 4 gauge (ga) wire ran from my car battery to power my audio amp. the smaller the number the bigger the wire usually from 24 gauge to 1/0 gauge which is about a inch thick
The lower the voltage the larger gauge wire you will need to get the same power.
Length and wire gauge will determine this for you...
check the power to gauge and the temperature sensor (tps). if no power broken wire or short to ground. if power to both areas bad gauge.
In cooper electrical wire, gauge 8 means the wire size assigned by the American Wire Gauge (AWG) system. That is why you always will hear about AWG WIRE, it's not the type of wire is the gauge that we are talking about. A gauge 8 wire will be used for connections requiring from 40-45 amps to a maximum of 73 amps. (24 for power transmission). Diameter of an 8 AWG wire is 0.12849 inches. 8 AWG is solid, not stranded.
red wire= main power/postive yellow wire=main power/memory black wire=ground wire/negative
use 4 gauge spade crimp connectors