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What size wire is needed for a 200 amp sub panel that is 30 ft. from main panel?
Wiki User
∙ 12y ago
Not an easy answer. If your breaker requires you to use the 75C rating (most do) then the absolute smallest wire that is guaranteed to pass an inspection is 3/0 copper. That treats the sub-panel as a branch circuit and uses standard ampacities.
If your sub-panel is in a single-family residence (that would be a big sub-panel for such) then you might get away with 310.15(B)(6), which would allow you to cut it back to 2/0 copper. That, however, would depend on whether the AHJ considers the sub-panel to be a service or a branch, and there are various attitudes to that depending on your inspector, your city, etc.
Wiki User
∙ 12y ago
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What size ground wire is needed for a 100 amp service panel?
#8 is the size of wire to use for grounding a 100 Amp panel. Green is color used for grounding #8 is code.
What size wire is needed to feed a 125 amp sub panel from a 200 amp panel less than 200 wire feet away?
A #1 copper wire with an insulation rating of 90 degrees C is rated at 140 amps.
Is neutral wire same size as hot in 200 amp panel?
Yes, they are the same size wire.
What size wire is needed for carrying 100 amps under ground?
To calculate the wire size, a system voltage is needed.
What size of wire do I need for 130 ft run sub panel?
Wire sizing is based on the amperage of the load. Without this amperage the wire size can not be calculated. Also with sub panels it should be stated whether it is under the same roof as the main panel or separate from the main building. Different code rules apply to each application.
What size wire should be used from main panel to 50 watt subpanel?
#6 wire is needed. If placing the subpanel in a garage at a good distance, it is recommended to also install a seperate ground rod .
What size ground wire needed for a 200amp service panel in new jersey?
#6 bare copper wire.
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 size ground wire is needed for a 100 amp service panel?
#8 is the size of wire to use for grounding a 100 Amp panel. Green is color used for grounding #8 is code.
What size wire is needed to feed a 125 amp sub panel from a 200 amp panel less than 200 wire feet away?
A #1 copper wire with an insulation rating of 90 degrees C is rated at 140 amps.
Is neutral wire same size as hot in 200 amp panel?
Yes, they are the same size wire.
What size wire is needed for carrying 100 amps under ground?
To calculate the wire size, a system voltage is needed.
What size of wire do I need for 130 ft run sub panel?
Wire sizing is based on the amperage of the load. Without this amperage the wire size can not be calculated. Also with sub panels it should be stated whether it is under the same roof as the main panel or separate from the main building. Different code rules apply to each application.
Can you install a 150 amp meter base and still have a 100 amp main panel?
The wire size in a meter stack is governed by the size of the first over current device.
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.
Can a paralleled grounded conductor be a 2?
A conductor used for grounding of the main service should be a single wire. The code book has a table that states the size of ground wire for different service panel amperages.
What gauge wire to use for direct burial for a garage that is 400 feet from your house?
Depends on the size of the sub-panel in that garage. If you are installing a 60 amp sub-panel 400 feet away from the main service panel then use AWG # 4.
