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 ...

When swapping out a replacement motor, it’s tempting to unbolt the J-box (junction box/terminal box/ T-box) from the motor and leave it attached to the conduit. The problem with doing so is that the ...

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.