General contractor Tom Silva shows host Kevin O’Connor what’s inside a typical residential electrical service panel. Then, master electrician Allen Gallant helps a homeowner install a new 220-volt receptacle in his garage-turned-woodshop. Landscape contractor Roger Cook shows Kevin what types of hand tools every home gardener should own. Then, the crew asks “What is it?” Plumbing and heating expert Richard Trethewey installs a macerating toilet in a basement.

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