In short. Installation planning connects the delivery of a generator with everything that must be ready for it to be placed, connected, commissioned and handed over. It fixes the sequence and dependencies between civil work, mechanical interfaces, cabling, transfer equipment, fuel, permits and testing, and it names who confirms each item. A delivery date is not an energisation date; the plan is what closes the gap between them.
Why a delivery date is not enough
We have delivered sets to sites where the plinth was still being cast, where the cable trench crossed a road that needed a municipal permit, where the main switchboard had no spare way, and where the crane booked for the lift could not enter the gate. Each of these was foreseeable. Installation planning exists to foresee them, by listing every activity between purchase order and handover, asking what each one depends on, and assigning a person and a date to it. On a small commercial installation the plan is a single page; on a plant with multiple sets, synchronising and a new substation room, it is a programme with a critical path. Either way the discipline is the same.
Resolve the technical interfaces first
Every interface between the set and the site needs compatible information from both sides before anyone builds anything. The general arrangement drawing of the exact set, at the current revision, gives dimensions, weight, lifting points, cable entry positions, exhaust outlet size, radiator airflow and fuel connections. The site side gives the foundation drawing, room or plinth dimensions, cable routes, exhaust route, fuel tank position and the switchboard details. The plan records which dimensions are still provisional and who will confirm them, because a change from one alternator frame to another can move the cable box by 200 mm and invalidate a trench already cut. Changes to the equipment configuration after the drawings are issued are reviewed for their effect on the programme, not absorbed silently on site.
Sequence and dependencies
| Activity | Depends on | Typical owner | Evidence it is done |
|---|---|---|---|
| Approved GA and foundation drawings | Set model confirmed, site survey | Supplier and designer | Signed drawing set at current revision |
| Permits and approvals | Drawings, emission and noise data, fuel storage quantity | Owner with contractor | Electrical inspectorate submission, SPCB consent, PESO where needed |
| Foundation and room civil work | Foundation drawing, access for materials | Civil contractor | Cured plinth, level checked, anchor positions marked |
| Ventilation openings and exhaust penetrations | Airflow data, exhaust route | Civil and mechanical | Openings at design free area, sleeves installed |
| Cable trench, tray and ducts | Cable route, sizes, switchboard position | Electrical contractor | Route complete, draw-ropes in, protection in place |
| Fuel tank, bund and pipework | Tank position, PESO conditions | Mechanical contractor | Tank pressure tested, bund complete, pipework flushed |
| Switchboard modifications and ATS or AMF panel | Design support outputs, shutdown window | Electrical contractor | Panel installed, incoming cable terminated, settings sheet |
| Delivery and placement | Everything above, crane and access confirmed | Supplier with rigging contractor | Set on anti-vibration mounts, level, lifting gear released |
| Mechanical and electrical connection | Set in position | Supplier and contractor | Connection checklist signed |
| Pre-commissioning checks | All connections complete | Commissioning engineer | Checklist with measurements |
| Commissioning and handover | Pre-commissioning passed, load available | Commissioning engineer and owner | Test records, punch list, training record |
Permits, shutdowns and other trades
Three items routinely sit on the critical path in Hyderabad and are routinely forgotten. The first is the shutdown window on the main switchboard: connecting the generator incomer or installing an ATS needs the board dead, and a hospital, a data centre or a running factory does not give that window on demand. The second is approvals: the electrical inspectorate for installations above the notified voltage or capacity, the State Pollution Control Board consent that depends on the emission and noise data of the set, and PESO for bulk fuel beyond the exempted quantity. The third is coordination with other trades: the civil contractor who must finish the plinth and the openings, the fire contractor whose detection and suppression in the generator room must be complete before the set runs, and the HVAC contractor whose condenser units must not sit in front of the radiator discharge. The plan names these and dates them.
Site readiness before delivery
The day before delivery, a readiness check confirms the plinth is cured and level, the access route is clear and the crane position is agreed, the room openings and exhaust sleeves exist, the cable trench and tray are complete to the switchboard, the fuel system is tested, the room lighting and small power are live, fire detection is at least temporarily in place, and the people who will receive the set are named. If any item fails, the delivery is moved rather than the set being dumped in a yard to wait, which exposes a new machine to rain and theft and starts the warranty clock. The installation itself, from placement through connection, is described in generator installation, and the site facts that feed the plan come from the site survey.
Plan the proof, not just the work
Installation completion is not commissioning, and commissioning is not a no-load run. The plan states the inspections and tests required before handover, who witnesses them, what load will be available or whether a load bank is hired, and how incomplete items will be recorded and closed. It includes operator familiarisation, the handover of drawings and settings, and the maintenance access arrangements that must survive after the installers leave. Agreeing the acceptance records before work begins means completion is judged against a defined scope rather than argued at the end; the test content is set out in generator commissioning. Where protection settings, neutral arrangements or transfer logic were designed under design support, those documents are the acceptance criteria.
Common mistakes
- Ordering the set before the foundation and cable route are confirmed; the plinth is cast to the wrong dimensions or the cable box faces the wall.
- Booking delivery without a crane survey; the crane cannot stand where it must and the set waits on a truck at daily cost.
- Leaving the switchboard shutdown to be negotiated at the end; the generator sits connected to nothing for weeks while a window is found.
- Forgetting SPCB, inspectorate and PESO submissions until the set is on site; energisation is delayed by the approval lead time.
- Treating the first engine start as the finish line; no loaded test, no transfer proof and no documentation, and the first real outage is the commissioning test.
What to send us
Send the confirmed set model or the quotation under consideration, the site survey report, the single-line diagram and switchboard details, the civil contractor’s programme, any shutdown constraints on the building or plant, the status of approvals, and the names of the other contractors on site. Photos of the current state of the room, plinth and cable route help us set realistic dates. Use the generator sales enquiry and we will return a dependency plan for the installation. Fire-safety requirements for the generator room are summarised at fire and site safety.
Questions engineers ask
How long does a generator installation take?
For a canopied set on an existing plinth with a short cable run, placement and connection take one to three days and commissioning another day. Where civil work, a new ATS, a bulk fuel system and approvals are involved, the programme is typically six to twelve weeks from order, driven by the civil work and the approval lead times rather than by the set.
What approvals are needed to install a diesel generator in Telangana?
Typically consent from the State Pollution Control Board based on the set’s CPCB emission and noise compliance, electrical inspectorate approval for installations above the notified thresholds, and a PESO licence where bulk diesel storage exceeds the exempted quantity. Building and fire authorities may add conditions. Confirm the current requirements for your capacity and location.
Who is responsible for the foundation?
The owner’s civil contractor builds it, to a drawing that must come from the set’s general arrangement and the manufacturer’s foundation guidance, reviewed against the site survey. The supplier confirms dimensions, weight and anchor positions; the civil designer confirms the ground or slab can carry them.
What should the owner have in hand at handover?
As-built drawings, cable schedule, protection settings, transfer sequence and timers, earth test results, fuel system drawing, commissioning records with the punch list closed, manuals and warranty registration, and the maintenance schedule. Agree the list before work starts so that it is produced as the work proceeds.
Technical content reviewed by Srinivas Reddy, Managing Partner, Reddy Generators. Last updated 19 October 2026.