The Deltec shunts are calibrated with an accuracy of +/- 0.25%.
This is the 1000A 100 mV shunt. It is larger in size than the 500A shunt so items like the WBjr will not directly fit this shunt. The bolt size is 1/2 inch.
OutBack Power Radian uses a 1000A / 100mV shunt SMA uses a 1000A / 50mV shunt