Electrical Works — HT/LT Panels, Distribution and Wiring

What we deliver

HT and LT panels, power distribution, cabling, wiring, earthing and small power for commercial, industrial and institutional buildings — from the load schedule through testing and handover.

Electrical is the service every other system depends on. HVAC, firefighting pumps, lighting, lifts, IT and security all draw from the same distribution, so the decisions made at load-calculation stage quietly shape the whole building.

Scope of works

Stage	What we deliver
Load assessment	Connected load, diversity, sanctioned load application support
Design	Single-line diagram, cable and panel sizing, discrimination
HT side	HT panel, transformer interface where in scope
LT side	Main LT panel, sub-distribution boards, busbar risers
Cabling	Cable laying, containment, glanding, termination
Final circuits	Wiring, small power, lighting circuits, floor boxes
Earthing	Earth pits, bonding, lightning protection interface
Testing	Insulation resistance, earth resistance, polarity, commissioning

What drives the cost

Connected load and diversity · HT supply versus LT-only · transformer and DG interface · cable lengths and routes · containment type · panel make and form of separation · number of final circuits and floor boxes · testing and documentation requirements.

Where projects go wrong

• No realistic load schedule. Everything downstream — sanction, transformer, cables, panels — is sized off it.
• Cables sized for current but not for voltage drop. Long runs in large buildings need upsizing that a simple current check misses.
• Discrimination not checked. A fault on one circuit trips the upstream breaker and takes out a whole floor.
• Earthing done to a minimum and never tested. It degrades, and it is the component that makes faults safe.
• Containment sized exactly for day one. The next change becomes a rebuild.

Why Hagerstone

15 electricians in-house, with MEP delivered alongside interiors, facade, civil and PEB — so the electrical design is coordinated with the layout, the ceiling and the HVAC rather than retrofitted to them.

Owned tooling including measuring instruments, crimping tools and testing equipment, under ISO 9001 / 14001 / 45001 and 79+ quality checkpoints.

For air conditioning, see our HVAC services.

Standards referenced

Installation safety under the CEA (Measures relating to Safety and Electric Supply) Regulations, 2023. Wiring practice to IS 732. Earthing to IS 3043.