I am planning to install a new service panel and there are three areas to punch out the holes in the back for the wires to come in (3/8" to over 2"). I want to plan how many wires and what size clamp for each opening but am having trouble finding the right spot in the NEC to tell me the limit. Is it the same as for metallic conduit in general or tell me which chart to refer to.
- posted
18 years ago