I have an older cottage with a 100 amp fuse panel.I would like to change over to a 200 amp breaker panel.Can I install the 200 amp panel along side the old one , change over my wiring to it then run the main incoming power to the main breaker of the 200 panel ?I also want to run power to a new building I built for a work shop.I will be using a small compressor , fridge , table saw and various shop tools.The building is approx. 70 ft away and I plan on having another panel there to run separate lines from, one being a separate line for compressor.What size wire do I need to run from panel to panel?
Thanks

As to question one : sorry that I can not tell you. It's a local US regulations thing. But I'm sure someone will tell you.
As to question two :
First the references :
List 1 : wire-gauges (http://www.engineeringtoolbox.com/wire-gauges-d_419.html)
List 2 : amps-wire gauge (http://www.engineeringtoolbox.com/amps-wire-gauge-d_730.html)
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70 feet + the distance inside to each panel (say 10 feet) = 80 feet.
Max. power draw let's say 60 Amps.
As per reference list 2 that requires minimal a set of 3/0 wiring between the panels.
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If you want to run separate lines just lower power draw to 2 x 40 Amps.
As per reference list 2 that requires minimal 2 sets of 1/0 wiring between panels.
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Remember : If you use 110 Volt appliances only, you need 1 hot, 1 neutral, amd 1 ground wire.
If you have mixed 110 Volt/220 Volt appliances involved, upgrade that specific wiring to 2 hot wires, 1 neutral wire, and 1 ground wire.
Either use a cable pipe or armored cable.
Success!
As always : if you require more info, please let me know. If this solves your problem, please rate the answer provided! Feed back is always appreciated!
;)

Credendovidis, WHY do you keep using a chart for 12V wiring to give advice for 120/240v wiring?? ALL this information is meaningless with regard to what these folks are doing.
Maybe there is a boat wiring forum that can use this information. :rolleyes:


Camp44, you can install the 200A panel and do as you intend. You will be best served to ultimately do a complete service upgrade to 200A though. This involves everything from the entrance cables to the meter, the meter pan, the cables to the panel, and all grounding/bonding.

For a remote sub-panel you would need to tell us what you intend to do specifically. Typically a 60 or 100 amp sub-panel is installed. For the short distance you are running NO derating is necessary and standard feeder sizes apply.
Again,for that short distance, and considering an upgrade of the main service to 200A, a 100A sub would be a good idea and will leave room for future expansion.