Principle: for pure resistive loads, G = 1; for resistive loads with peak current, G = 1.1-1.2; for capacitive loads, G = 1.5-1.7.

The increase and decrease of ambient temperature will affect the open circuit and load characteristics of the fuse. The temperature derating curve in the fuse data sheet shows this effect.

based on the cross-sectional area of the fuse's connecting copper bar / standard cross- sectional area, refer to the fuse's thermal connection coefficient curve chart to determine the thermal connection correction factor

The cooling environment of the fuse affects its selection of rated current, such as forced air cooling, natural cooling, etc. Determine the wind cooling correction factor based on the fuse's wind cooling correction curve.

In a higher altitude environment, the air is thinner, and the cooling conditions are worsened, requiring a reduction in rated current capacity. For altitudes above 2000 meters, for every additional 1000 meters, reduce by 5%, but at the same time, the temperature drops by about 6°C, so it is generally considered that these two effects offset each other.

Determine its packaging correction coefficient based on the type of fuse encapsulation. For example, if the fuse is installed in an open cabinet, take 1; if the fuse is installed in a sealed cabinet, take 0.9; if the fuse is installed in a MSD via bolt tightening, take 0.8; if the fuse is installed in a MSD via plug connection, take 0.7.