Case studies
Internal Arc Integrity for Cable Transits
An internal arc fault turns a switchgear enclosure into a pressure vessel in milliseconds. Threepwood’s white paper assessed how a Roxtec cable transit system maintains that enclosure’s tested arc classification, giving operators an evidence base to specify it with confidence.
Overhead Line Enhanced Ratings
Static seasonal ratings treat every hour as the worst hour. Threepwood built the method and the tooling to rate overhead lines against the conditions they are actually experiencing, releasing capacity that is already there, safely within thermal and clearance limits.
ESB Networks LCT Register Compliance
Heat pumps, EV chargers and inverter-connected generation must be registered with ESB Networks before they can be connected. Threepwood acts as the LCT Compliance Agency, taking manufacturers and installers through registration.
HV Switchgear Enhanced Ratings
No published standard tells an operator how far high-voltage switchgear can safely be pushed above its normal rating, or for how long. Threepwood built the guidance and the calculator that provide the justification.