Those conditions include the following: 1 . The dwelling unit must be served by a single 3-wire service or feeder. 2. The voltage must be 120/240 ... Many heat pump thermostats are the two-stage type. The first stage calls for the heat pump toanbsp;...
|Title||:||One-& two-family dwelling electrical systems|
|Author||:||J. Philip Simmons, International Association of Electrical Inspectors|