This 6-circuit, 30 Amp manual transfer switch is designed for fast installation (indoors) in a home, office or small business. It is completely pre-wired and enables the electrical system of the building to accept the power of a portable generator to run up to six single-pole circuits, and any pair of single-pole circuits can be used as a double-pole circuit. It allows you to power electrical appliances, devices and lighting during a power outage. This transfer switch is completely code compliant and keeps the generator power isolated from the utility power at all times. Circuit breakers are 1 in. interchangeable and can be changed to different sizes and brands that are compatible and within the maximum circuit size ratings. Maximum circuit size: 30 Amp on positions A and B, 20 Amp on all other positions (C-J) Dual colour-coded wattage meters to help balance the generator load and estimate overall power usage For use with portable generators or inverters with a maximum output of 30 Amp at 125/250 VAC Removable cover with circuit label adds protection and convenience and finishes off the overall look of the transfer switch