From Free Knowledge Base- The DUCK Project: information for everyone
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For a 66 block it is a good idea to have a service loop. Add an extra 2 feet and 2 inches for a service loop.For a 66 block it is a good idea to have a service loop. Add an extra 2 feet and 2 inches for a service loop. The service loop is the extra wire you leave in the event that the punch down block needs rewired due to a problem with something like a broken wire. Without extra, it might be necessary for the entire drop to be replaced. The service loop is used wrapped at the bottom of the punch down block.
