A 1/0 MCM copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 250 feet on a 240/120 volt system. This calculation is for a full 100 amps at the panel. If exact amperage is known the conductor size can be reduced to match the known amperage.
This answer assumes that the sub panel will have a three wire feeding it with a supply of 120/240 volts. To maintain the voltage to a 2.5 % drop at the end of the 200 foot run, you will need to use 3 runs of #4 copper wire cable suitable for underground installations if installed in PVC conduit. You can also use 3C - #2 ACWU for direct burial. #4 copper wire is rated at 85 amps, #2 aluminum is rated at 95 amps. The reason for the larger sizes in the wire is to offset the voltage drop over the distance.
This is a voltage drop question. The sub panel's voltage needs to be stated to answer the distance part of the question. A #3 copper conductor with an insulation factor of 75 or 90 degree C is rated at 100 and 105 amps respectively.
This is a voltage drop question. A voltage is not stated. For calculation purposes the voltage of 240 volts will be use. This also assumes that the sub-panel is protected by a 100 amp breaker and it will be fully loaded.The code book suggest that a 3% voltage drop should be the maximum allowed. A 1/0 copper or 2/0 aluminium conductor will limit the voltage drop to 3% or less when supplying 100 amps for 275 feet on a 240 volt system.
I wold recommend running 2awg aluminum unless you plan to heavily load the panel in which case i would go to 1/0 aluminum. See View Discussion below.
20Sqmm
A #1 copper wire with an insulation rating of 90 degrees C is rated at 140 amps.
A 3/0 copper conductor with an insulation rating of 75 or 90 degrees C is rated at 200 and 210 amps respectively. A 3/0 copper conductor will limit the voltage drop to 2% or less when supplying 200 amps for 80 feet on a 240 volt system.
If you want to be a indoor grower like your self you do stupid shite like ask these questions i a hope you have bond money PS spelling is wrong purposely
This is a voltage drop question. A voltage value needs to be stated. Assuming that the 200 amp panel is a single phase 120/240 volt sub panel. A #1 copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 200 feet on a 240 volt system.
20Sqmm
For that distance I would run AWG # 3 copper and install a sub-panel.
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.
Re Question with the voltage that you will be using.
You need the stand size window opening of 2.5 feet by 2 feet.
A #1 copper wire with an insulation rating of 90 degrees C is rated at 140 amps.
it depends on what size your feet are
If you want to answer, give a size of panel and relavence to a given location, providing a scale to be applied to the problem at hand
A 3/0 copper conductor with an insulation rating of 75 or 90 degrees C is rated at 200 and 210 amps respectively. A 3/0 copper conductor will limit the voltage drop to 2% or less when supplying 200 amps for 80 feet on a 240 volt system.
40 feet
If you want to be a indoor grower like your self you do stupid shite like ask these questions i a hope you have bond money PS spelling is wrong purposely
Depends on the size of the board.