The Kw 4 SV, 4kw Steam Vaporizer heats up to 200 cubic feet (length x width x height). Enjoy all Stainless Steel construction, Industrial low-density silver solder Incoloy elements and a manual-fill water reservoir for continuous steam throughout your sauna session.. Saunacore heaters offer both outstanding safety and energy saving features, as well as sleek, high technology design. The innovative ventilation system allows these heaters to run up to 50 degrees cooler than most heating units on the market. With Saunacore sauna heaters, you get your choice of mechanical controls built into the base of the heater, or mechanical wall-mount controls for mounting adjacent to your door outside of your sauna. You can also upgrade to the popular Mercuri Digital Control. This heater is 240 volts.

Specifications:
240v/1ph, 16.7 Amps, 12 Gauge Wire; Dimension: 15"w X 23.5"h X 10"d

Here is what we recommend. Better safe than sorry:

Please follow that which was provided by SaunaCore:

"We do not provide wiring and never have as everyone's application is different. Your electrician must follow local code and provide wiring required accordingly and it should also state the wiring required in your permit which you must acquire from your city bylaw/permit office."

This is for both the wiring for the stove and the wiring between the control and the stove.