A heater uses up to 1500 watts by itself. Extra power is handy for outside electrical tools and electric snowblowers etc

Make sure to follow the local code for your area, especially with burying the correct cable and protecting if (surrounded in gravel, pressure treated board on top, orange flagging tape…..).

A friend put a shovel through the 240v unprotected wires going to garage, while digging window well. Fortunately the breaker tripped