Fire hydrant power failure is how to use the fire pump useful trouble detailed answer
In accordance with the fire code, the fire pump should have two channels of power supply, if one of the lines into the power failure can automatically switch to another root, so, from the normative point of view, there is no power outage.
In reality many owners do not comply with fire regulations, or real conditions do not permit, many buildings in the fire electricity only way into the line, in the event of a power failure if only by fire from the outdoor fire hydrant fire with fire hydrant to pump the water supply pipe network.
