To determine the feasibility of adding a new large appliance to your electrical system without upgrading the panel, you need to calculate the load your current system draws. Electricians have a simple ...

Note: This article is based on the 2002 NEC. Even if you work with stamped drawings, you'll eventually need to do commercial load calculations in the field or on a licensing exam. The National ...

HVAC distributor cfm Distributors recently developed a list of items to test and/or questions to ask when dealing with sites that have experienced multiple failed compressors. The first step consists ...