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Use AWG # 4 copper and you will have a 2.6% voltage drop which is acceptible.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoA #4 copper conductor will limit the voltage drop to 3% or less when supplying 30 amps for 400 feet on a 240 volt system.
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What wire size do you need for a 125 amp panel with a 100 amp main breaker?
A #3 copper conductor with an insulation factor of 90 degrees C is rated at 115 amps. Even though the panel is rated at a higher amperage it is the main breaker that governs the wire size.
Do you need a main disconnect on the feeder wires running to a detached garage running from the box in the house?
Yes you do. The detached garage will either be fed with a single circuit or a sub panel. The wire feeding the garage will need to be protected and that is the purpose of the breaker (disconnect). The breaker size will be determined by the size of the wire that is used on this circuit.
What size wire for 400 amp distribution panel?
For a distribution panel rated at 400 amps parallel runs of 3/0 conductors will do the job.
What size wire do you need for 15 amps?
AWG 10.
If you have a circuit breaker box containing 650 amps of circuit breakers it is 3 phase 480 volts what size kva generator do you need?
The question isn't the number of amps total on your branch circuits, but rather, what your MAIN breaker(s) are rated at. This will determine what size of generator you will need. And be certain that the generator is 3-phase. <<>> The formula you are looking for is Amps = kva x 1000/1.73 x voltage.
What is the minimum size breaker panel for a home's main service?
50 amps
What is the minimum size breaker panel required for a homes main service?
50 amps
What wire size do you need for a 125 amp panel with a 100 amp main breaker?
A #3 copper conductor with an insulation factor of 90 degrees C is rated at 115 amps. Even though the panel is rated at a higher amperage it is the main breaker that governs the wire size.
What is the minimum size breaker panel for a home?
In North America the smallest size breaker found in a home distribution panel is rated at 15 amps
What is the maximum amps for a sub panel?
The size of the sub panel is dependant on the amount of connected loads and the amperage of these loads, or the total load in amps on how many new circuits that you will require.
What gauge wire do you need for 12 volts at 4.2 amps in my car for a light H11 Light bulb?
Almost any size wire will handle the 4.2 amps. BUT...as with any wiring, you must look at the over current device to determine the proper size. You need to determine which fuse in the fuse panel protects that circuit and use a wire that is appropriate for that size fuse.
What size breaker would i use to add a 100amp subpanel?
Any size two pole breaker up to the value of 100 amps. Just make sure that the wire used to connect to the sub panel from the main panel is of a size to correspond to the breaker size. Wire amperages at 90 degrees C are, 30 amp #10, 40 amp #8, 55 amp #6, 95 amps #4,110 amps #3. Also keep in mind to look and see if the sub panel is rated at 100% or 80% load capacity. If it is only 80% load capacity then reduce the amperage rating of the conductors by 80% to obtain their new capacity rating.
How do you read breaker box amps?
The main breaker will have marking indicating size of electrical service, or if it is a fuse system....the fuses will have current ratings. If it is a subpanel, it might not have a main breaker. In this case you would have to look in the panel that the feed is coming from and find the size of the breaker that is feeding it. In either case you must look for the manufacturer's label that will have the maximum current the panel can handle, make sure the breaker feeding the panel doesn't exceed this rating.
What size subpanel do you need for 6 20A circuits?
The size of the sub-panel is dependant upon the total load amps of the devices you want to connect. Take into account if more that one device will be or could be running at one time.
A range name plate says 78 amps what size breaker needed?
Canada and US - Standard size breaker in home panel is 40 amps for stove. If not standard range open Discuss Question page.
What size wire for 400 amp distribution panel?
For a distribution panel rated at 400 amps parallel runs of 3/0 conductors will do the job.
Do you need a main disconnect on the feeder wires running to a detached garage running from the box in the house?
Yes you do. The detached garage will either be fed with a single circuit or a sub panel. The wire feeding the garage will need to be protected and that is the purpose of the breaker (disconnect). The breaker size will be determined by the size of the wire that is used on this circuit.
