A qualified and a licensed electrician must perform hot tub electrical installations. The law in the United States and Canada requires this. The electrician must follow the local codes.
Hot tub electrical installations are dangerous when done improperly. There are risks of shock or electrocution. The local codes for electrical installation require a licensed electrician or a contractor to do the work.
A local electrical or building inspector must approve the installation, according to National Electric Code (NEC) and applicable local or state codes. The electrician selects the wire size based on NEC or local codes and determines the required length. The electrician also offers the necessary support for hot tub electrical connections.