That's 200 pounds of you and the stuff you wish to haul up it. Wood ladders should not be painted since the paint may hide cracks and other defects. Aluminum ladders are good conductors of electricity, so keep them away from power lines and do not use them while doing electrical work. Electricians prefer fiberglass ladders which will not conduct electricity and are lighter to carry than wood. Watch out for those power lines.
Electricity can come down a metal ladder at the speed of light.
The ladder should be placed on level, solid ground. The ladder should extend two feet above what you wish to step onto. Stepladders stand on their own. Extension ladders need to lean against something. The base of the ladder should be placed a distance from the thing the ladder is leaned against equal to one fourth the height of the ladder from the base to contact with the building.