EG4 › Problems
EG4 GridBOSS Eaton CSR main breaker won't seat
During a GridBOSS install, the Eaton CSR main breaker won't go down onto its tabs because the tabs are in the way. This page covers what to check first and the cause behind it.
What to check first
- Before the CSR breaker is fitted, the tab orientation should be checked against the documentation EG4 supplies with the CSR kit.
Safety. Before anyone works on the breaker, verify the GridBOSS is de-energised at the PV, FlexBOSS, smart port, load and grid points.
The causes and the fixes
Partners see the causes behind this problem, most common first, the checks that tell them apart, and the fix for each, with part numbers and recent prices when a part is involved.