Feature · Intrinsic Design Capacity
IDC, filled in from the manufacturer's datasheet.
The ENA register doesn't publish IDC, yet it decides G98 or G99. Where the manufacturer's datasheet states a higher figure, checked by hand, CLRD fills it in.
First job free. No card to start.
What it is
Intrinsic Design Capacity is the most an inverter was designed to put out. Usually it matches the Registered Capacity on the ENA register. But some inverters are software limited at the factory to a lower Registered Capacity than the hardware can deliver, and for those the IDC is higher. The register doesn't say which. The manufacturer's datasheet does, and where CLRD holds it, picking one of those inverters fills its IDC in. We hold datasheets for about three in four inverters on the register.
Why it matters
IDC is one of the G98 tests. An inverter with a Registered Capacity of 16 A or under, but designed for more, is not G98: it goes as a G99 SGI-1 notification, on a different form. Above 32 A it rules out the SGI procedures altogether. Get the IDC wrong and the job is filed under the wrong procedure, on a form you signed.
The figure most installers never know to look for, found for you.
- Thousands of manufacturer datasheets read, and every IDC found above the Registered Capacity checked by hand.
- Pick the inverter and its IDC fills itself in.
- Still yours to change if the unit on the wall differs. Leave it blank on any other inverter and IDC equals the Registered Capacity.
- Routing reads it straight away: an inverter registered at 16 A or under but designed for up to 32 A goes G99 SGI-1, not G98.
EnlargeIn practice
What changes on the next job.
No datasheet hunt
The figure the ENA register leaves out, found from the datasheet where we hold it.
The right form
The gate between G98 and SGI-1 is applied on the real figure.
Checked by hand
Every figure verified by a person, not scraped and hoped for.
Before & after
With CLRD vs. without.
See it fill in the IDC on your own jobs.
Run one of your own installs through it free. Or book twenty minutes and we'll do it with you.
First job free. No card to start.