A generator producing 3500 watts at 120 volts will have a current flow of about 30 amperes, which requires a #10 wire extension cord as long as it doesn't exceed 30 feet. Longer extension cords under full load can lead to some voltage drop, so #8 wire would be a better choice for longer runs. Regarding surge protection, that depends upon what kind of generator you're using and the sensitivity of the devices that you're running from it. Inverter generators produce a smooth current and voltage output. Other kinds of generators are not so smooth, so it would probably be safer to buy an RV surge protector such as the one offered by Camping World: http://www.campingworld.com/shopping/item/portable-surge-guards-with-lcd-display-30-amp/58464 If you're at a campground with an electric hookup that same surge protector can protect your popup from any surges that their electrical system may have. |
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