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Electricians use the tables in the electrical code book. The table consists of wire sizes and insulation factors. The insulation factors include temperature ranges of 60, 75, 85-90, 110, 125, and 200 degrees C. To use the table, an amperage is selected, for example the wire size for a 200 amp service. Look down the list for 200 amps. There are two listings, one for 75 degree C wire at 200 amps and the second for 90 degree C wire at 210 amps. Local electrical code amendments, based on climate and weather, usually stipulate which of the two degree wires are to be used.
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Can using larger wire sizes reduce amp draw?
Using larger wire sizes will not reduce amp draw. The amp draw is determined by the electrical device or load connected to the circuit, not the wire size. Larger wire sizes are used to reduce voltage drop and heat generation in the wiring, but they do not directly affect the amp draw of the circuit.
Can you have a 120v circuit on a 30 amp breaker?
No, electrical code typically requires that circuits be protected by a breaker that matches the wire size. A 30 amp breaker is typically used for circuits with larger wire sizes. For a 120V circuit, a 20 amp breaker is more suitable with appropriate wire size.
What size wire for 200 amp service?
For a 200 amp service, it is recommended to use 3/0 copper or 4/0 aluminum wire. These wire sizes are suitable for handling the electrical load of a 200 amp service with the appropriate safety margin. It is important to consult with a qualified electrician and adhere to local electrical codes when determining the wire size for a 200 amp service.
What size wire should i use for 200 amp service?
For a 200 amp service, it is recommended to use at least a 3/0 copper or 4/0 aluminum wire. These wire sizes can safely handle the current and provide necessary voltage drop considerations for a 200 amp service.
What is the amp size of a 8 wire?
The amp size of a wire is determined by its gauge, not the number of wires. An 8-gauge wire is typically rated for around 40-60 amps, depending on the type and insulation of the wire.
