Advances in photovoltaic technology are closely related to improvements in module efficiency. As a result of intense market competition, module current has increased significantly over recent years.

Note: This article is based on the 2005 NEC. The sizing requirements for pull boxes, junction boxes, handhole enclosures, and conduit bodies exist to prevent conductor insulation damage. Those ...

You should always buy the best electrical boxes for your DIY wiring projects. Metal models are generally more expensive than plastic, and if you ask four electricians whether the former are better ...