There must be 3 feet of clearance in front of your electrical panels, and the door must be able to open at least 90 degrees. Move any boxes or objects that obstruct your view. NEC Article 408 covers switchboards, switchgear, and Panelboards installation and applications. Expect to pay $1,500 to $2,000 to move an electrical panel, with replacement adding another $1,150 if your existing box needs upgrading. The door would need to open a minimum of 90°. Hi Guys. Electrical clearances are the minimum separation distances the National Electrical Code (NEC) requires between wiring, panels, overhead conductors, and everything around them.