What is the difference between old work and new work electrical boxes?

Regarding this, should I use plastic or metal electrical boxes?

When Plastic Boxes Are Recommended However, electrical code does not require thatyou use NM cable with plastic boxes. The onlyrequirement is that the application is grounded.Metal-sheathed wiring depends on bonding with the metalelectrical box for grounding.

Beside above, what is the difference between junction box and utility box? junction box: An electrical junction boxis an enclosure housing electrical connections, to protectthe connections and provide a safety barrier. The term junctionbox may also be used for a larger item, such as a pieceof street furniture. In the UK, such items are oftencalled a cabinet.

Subsequently, one may also ask, what is a remodel box?

Remodeling boxes, also called old-workboxes, are electrical boxes designed to be installedafter drywall has been hung. For example, you would install aremodeling box if you need an additional outlet for a homeoffice or theater.

Do plastic electrical boxes need to be grounded?

Plastic electrical boxes have their pluses andminuses. Because they are plastic, there is no needto attach a ground wire to it. Plastic boxes usuallycome with tapped screw holes for easy attachment of switches andoutlets.