In Florida, very few buildings have basements. Both residential and commercial structures are built on a concrete floor. Before the concrete is poured, electricians may lay "conduit" (plastic or metal pipe) in the ground. Electricians must be skilled in blueprint reading to accurately measure where the conduits are placed under the building.

In a house, you may have to run one piece of conduit to provide access for the power to an island in the kitchen. In a commercial building, multiple runs of conduit may be laid to later provide power for receptacles, sub-panels and equipment.

The electricians may dig the ditch with a back-hoe, a trencher or the old-fashioned way - with a shovel. The next step is the "rough-in".

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