EG4 › Problems
EG4 neutral-ground bond missing or doubled
Your EG4 system has no neutral-ground bond, or more than one, found with a meter rather than a fault code. This page covers what to check first and the causes behind it.
What to check first
- On a 6000EX or 6500EX in a fixed install, find out whether EG4's new firmware was loaded. It leaves the neutral-ground bond setting disabled.
- Note how many inverters run together, and whether a generator is connected without a Chargeverter. Both affect where the bond should be.
- The bond is checked with a meter, neutral to ground with the inverter in standby and never under load, so this needs a technician.
Safety. On paralleled inverters, current on the ground conductor and a voltage difference between the inverter cases is a shock hazard.
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.