String Method
The string method is the simplest technique for pulling wire through conduit and relies on a strong string called a pull string. The method works as follows: Tie the string: Tie a strong string to a long, inflexible rod. Push the rod: Push the rod through the conduit, tied end first.
Can you pull solid wire through conduit?
Pulling wires can be difficult enough through straight runs of conduit, but throwing a few bends and turns in the run increases friction, making pulling much more difficult. That's when you use a lubricant.
Can you pull new wire through old conduit?
Don't use the old conductors to pull the new ones in; pull in a rope, and then use that to pull in something to clean the conduit, along with another rope, and _then_ pull in your new conductors.
