![]() (Here, ‘K’ is a constant that depends on the material of the wire. If you want to determine the voltage drop for a copper wire that is going to carry 200 amps at a 500 feet distance by a 6/0 AWG wire then, Once you select the wire according to the current capacity, then you need to calculate the voltage drop. You can use the current capacity chart for AWG wires. To determine the suitable wire you first need to see the maximum current capacity of the wire that matches your criteria. How To Determine The Suitable Wire And Calculate Voltage Drop? Keeping the voltage drop as low as possible is a must for high loads. But the voltage drop will be a bit higher than 3%. You can alternatively use two 6/0 AWG cable in parallel. ![]() To be exact you will need 4 parallel wires to complete the job keeping the voltage drop within 3%. To run a 500 feet 200 amp you will need a number of 4/0 AWG wires in parallel. But you can use a 2 AWG copper wire if you are ready for a voltage drop slightly higher than 3%. If you are going to use a 20 amp capacity feeder, you can use a 1 AWG copper wire at a voltage drop of below 3%. What Size Wire To Run 500 Feet?įor a 120V run of 500 feet length you may use a variety of gauge wires depending on the current capacity. Like, where you need a 2 AWG copper wire, 4AWG aluminum wire can serve the same requirement. While replacing one with the other, aluminum needs to be thicker than the copper wire. Normally there are two types of elements used in the wires- copper and aluminum. These things determine which wire you need for the job. The element by which the wire is made of.Distance from point of supply to consumption end.To determine which gauge wire you need, you have to look at some factors. What Are The Factors You Need To Consider To Determine The Size Of The Wire? What Size Ground Wire For 200 Amp Service?.How To Determine The Suitable Wire And Calculate Voltage Drop?.What Size Wire To Run 500 Feet 200 Amp?.What Are The Factors You Need To Consider To Determine The Size Of The Wire?.So pay a consulting fee or buy a case of beer or a jug of hooch for a licensed local electrician to line out your project for you. You want to pass your inspection first time around but without spending more money and time than you have to. You need good advice before making electrical mods. My friends here in PM wish you well and would never knowingly mislead you but few of us (including me) are electrical professionals. While this is presented in tables, an informed judgement is still required. OTH a 100 Amp service is defined by the breaker and the conductors it feeds have to meet code requirements for Ampacity, conduit fill, insulation, placement in construction, max ambient air temp, and other factors. In electrical practice the overcurret protection is intened to protect the conductors it feeds not the power consuming equipment. #4 may be technically adequate for your immediate application for a 100 Amp service for equipment that's seldom run to capacity but when feeding a pump or a heater for example #4 may not be suitable. ![]() Look up accaptable ampacity in the NEC and your local code for your application. They're satisfactory in most situatations but not always suited to every application. ![]() Remember NEC and local code represents minimum standards. Then consider conductor size and conduit size. Some jurisdictions require upgrading of the branch circuit or sometimes even the whole system if any parts is sub-code. Maybe not in Wisconsin but certaily in warm climates. Some jurisdictions have more stringent requirements for conductor ampacity and other electrical minutia.
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