Historical
CSA C374-11
Energy performance of hot tubs and spas (Includes update 1)
Applies to electric hot tubs/spas that are factory-built, self-contained packaged units supplied with equipment for heating and circulating water. These units are connected to an electrical supply circuit of 250 V or less (i.e., 125 V maximum to ground).
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CSA America, Inc. [csa]