ENA EREC G98 Issue 2

G98 and the 16 A per phase threshold

The fully-type-tested route for micro-generation up to and including 16 A per phase, and the line that decides whether you are in G98 or G99.

Issue 2 is dated 10 March 2025, the same revision date as G99 Issue 2 — the pair moved together.

Why this reaches the test bench

The threshold is the design decision. A product that sits just above 16 A per phase falls into G99 and a materially heavier type-test programme, which changes what test equipment the manufacturer needs before the product exists.

How this differs from the American regime

There is no US equivalent of the 16 A per phase split; IEEE 1547 scales differently.

Sources

ENA EREC G98 Issue 2 — Energy Networks Association, via the GB Distribution Code site. Retrieved 2026-09-05.Supports: Issue 2, dated 10 March 2025; scope up to and including 16 A per phase

Issue numbers and transition dates move, and several in this field are still quoted wrongly. The compliance calendar tracks the dates that moved, the ones that quietly passed, and thirteen this market repeats wrongly — each against the instrument it comes from.