CEIG Approval Consultancy for Industrial Electrical Installations

CEIG is the Chief Electrical Inspector to Government — the state authority that approves industrial electrical installations before they can be energised. You generally need it for HT connections, substations, transformers and DG sets. Without it, a fully built plant cannot legally be switched on.

Primarily the drawings and calculations: the single-line diagram, load and fault-level calculations, protection coordination and discrimination, earthing design, and clearances around equipment — followed by a physical inspection verifying the installation matches what was approved.

Most delays are documentation rather than installation — a single-line diagram that does not show protection settings, calculations that do not demonstrate discrimination between upstream and downstream devices, or earthing design that is not evidenced. These come back as queries, and the file waits until someone answers them.

A DG installation typically falls within the inspectorate scope, particularly where it is synchronised or connected through a changeover to the main supply. Requirements vary by state and by rating, so confirm applicability for your installation with the state inspectorate before assuming it is exempt.

No. They are separate statutory approvals from different authorities under different rules — CEIG covers electrical safety and energisation, the Fire NOC covers fire and life safety. Clearing one does not advance the other, and an industrial project normally needs both.