20kW to 29kW 30kW to 39kW 40kW to 49kW 50kW to 59kW 60kW to 69kW 70kW to 79kW 80kW to 89kW 90kW to 99kW 100kW to 150kW Professional By Gasoline KindA back-feed occurs every time a generator is plugged into an electrical outlet, feeding ability back onto utility traces. This results in a everyday living-threatening hazard for any utility staff Perfo