A 200 amp service panel with a 60 amp sub-panel.
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
Need to know what size service is going to be installed at the end of the run.
250 mcm
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250 MCM aluminum minimum
The recommended service wire size for a residential electrical service upgrade is typically 2/0 copper or 4/0 aluminum.
There is no physical minimum door size - custom doors can be made to any size. There might be building codes for your area specifying what the minimum door size is for a commercial or residential structure, though...
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
Need to know what size service is going to be installed at the end of the run.
250 mcm
Please be more specific about 'service'.
50 amps
50 amps
The wire that is used for connecting the ground rod or plate to the electrical distribution is governed by the size of the electriclal distribution. In Canada a #6 bare copper is the minimum size for a 200 amp service.
The recommended specifications for aluminum 200 amp service wire typically include a minimum wire size of 2/0 AWG, rated for use in temperatures up to 90 degrees Celsius, and suitable for use in residential or light commercial applications. It is important to consult with a licensed electrician to ensure the correct wire size and type for your specific installation needs.
If it is roof drains you are talking about, this calculator may help you: http://www.portalsplus.com/drain_calc.htm
Supported minimum size