Electricity for refrigeration, heating and air conditioning  electric meters, basic components, and symbols  [video recording] : 

 - Clifton Park, NY:  Thomson/Delmar Learning,  2003 
 - 1 video cassette (VHS) (19 min. 43 sec.): sd., col.;  1 cm.;  1 instructor's guide 
 - Electricity for refrigeration, heating and air conditioning; set 1 (3) .
<br/><br/> VID 018 
<br/><br/><label>ISBN: </label>140181705X (Instructor's guide) 1401817025 (videocassette) 1401816991 (set) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric meters<br/>Electric switchgear<br/>Electric relays<br/>Electric contactors