Planning the Electrical Side of a Factory Relocation

Moving a factory to a new address is never as simple as loading a production line onto a truck and unloading it elsewhere. The electrical installation — switchboards, cable routes, the power-factor correction system, lighting, and in some cases a private substation — is the most fragile, time-consuming part of a relocation. A poorly planned dismantle-and-rebuild sequence can halt production for weeks; a switchboard reassembled from incomplete documentation creates a safety risk at the new site. This guide covers how we plan the electrical side of a factory relocation end to end, which steps cannot be skipped, and how downtime is kept to a minimum.

Pre-Move Assessment: Why It's Critical

The first step once a relocation decision is made is a complete inventory of the existing electrical infrastructure — main distribution board, sub-panels, power-factor correction system, lighting circuits, cable routes, and, where applicable, MV switchgear and substation. Skipping this inventory leads to field surprises and delays, especially in older facilities where the original as-built drawings are missing or the panels have been modified on-site several times over the years. At this stage, the new site's electrical infrastructure must also be checked against the equipment being moved — voltage level, connection capacity, and available panel-mounting space.

Dismantling Sequence and Method

Dismantling the electrical installation follows a defined order, not arbitrary labor:

1. De-energization and lockout-tagout (LOTO): Before dismantling starts, the relevant circuits are de-energized and locked out — essential both for worker safety and to prevent accidentally dismantling a live circuit.
2. End equipment first: Machine feeder cables and end-use equipment come down first, followed by intermediate distribution panels.
3. Main distribution board last: This is the most critical component and the last to come down; until then, minimum facility needs (lighting, security systems) continue to run from it.
4. Cable routes last of all: Cable tray, ladder and conduit runs are dismantled last; cable labels are verified and any missing ones completed during this step.

Reversing this order — for example, taking down the main board too early — cuts safe lighting and power to the teams still working elsewhere in the facility, which only extends the dismantling time.

Transporting Panels and Cables Safely

Low-voltage switchboards (products falling under TS EN 61439-1) are sensitive to vibration and shock during transport. Breaker mechanisms, relay settings and busbar connections in particular can loosen or be damaged in transit. Precautions to take before moving:

• Securing moving parts: Breakers, contactors and metering devices are set to their transport position; temporary bracing brackets are used where needed.
• Physical protection: Panels are wrapped and packed against moisture and impact (stretch film, foam padding, timber crating) — dust and moisture ingress during open-crate transport is a real risk.
• Cable labeling and photo documentation: Both ends of every cable are labeled and the connection point photographed before it is disconnected. Skip this step and reconnection time at the new site roughly doubles.
• Shipping critical spares separately: Relays, fuses and small metering devices — items prone to going missing — travel in separate, labeled boxes.

For cabling, decide in advance whether existing cables can be reused. Any cable damaged during dismantling, bent beyond its minimum bend radius, or that fails an insulation test should not be reinstalled — it should be replaced with cable resized per TS HD 60364-5-52.

Minimizing Production Downtime

The largest cost item in a relocation is often not transport — it's downtime. The most effective ways to cut it:

• Phased relocation plan: Instead of moving the entire facility at once, production lines are grouped by criticality and moved in phases, so some lines keep running at the old site while others come online at the new one.
• Parallel preparation: Electrical infrastructure at the new site (main board, cable routes, lighting) is prepared in parallel with dismantling at the old site, shortening "dismantle → move → build" into "prepare / dismantle-move-connect."
• Pre-built connection points: Machine feeder points, cable routes and panel-mounting infrastructure at the new site should be complete before the equipment arrives — so that once it does, only connection and testing remain.
• Off-shift windows: Steps requiring critical outages (taking the main board offline, switching the grid connection) are scheduled into the production calendar's least disruptive windows.

All of this requires the relocation plan to be prepared with the production planning team at least four to six weeks in advance. Last-minute relocations lose the option of a phased transition, and the entire plant stops at once.

Coordinating the New Site's Incoming Power Connection

The new site's electrical infrastructure has to be able to carry the load of the equipment being moved — and this needs checking before the relocation decision is finalized, not after. If demand exceeds the existing grid connection capacity, a new connection agreement with the utility — and possibly a private substation — comes into play. That process involves the project approval, short-circuit calculation and provisional acceptance steps covered in our substation setup guide, and it can take weeks — which is why assessing connection capacity should be one of the earliest steps in the timeline, not an afterthought.

Beyond the grid connection itself, if the new site sits inside an OIZ, its own technical requirements matter too — some OIZs apply their own standards for panel layout, earthing systems or power-factor correction capacity, and clarifying these during design avoids a forced revision after installation.

Re-Commissioning and Testing

Once installation at the new site is complete, a full commissioning test confirms the equipment has returned to its pre-move reliability level — not a step to skip on the assumption that "it worked before, so it'll work now." Re-commissioning should include:

• Insulation resistance and continuity testing: The only reliable way to catch insulation damage that may have occurred in transit.
• Busbar torque verification: Vibration can loosen busbar connections; all connections are re-checked with a calibrated torque wrench to prevent overheating and faults.
• Protection relay setting verification: The new site's grid short-circuit power may differ from the old site's, which means protection coordination needs to be re-evaluated.
• Earthing measurement: The new site's earth resistance is different from the old one's and must be measured and reported separately.
• Functional testing: Each machine feeder is brought online in stages under real load; energizing every circuit at once makes it far harder to trace the source of any fault that shows up.

Re-Establishing Power-Factor Correction and Lighting

The power-factor correction panel and lighting system often get pushed to an afterthought in relocation plans, despite a direct effect on production readiness. When the correction panel is re-commissioned, capacitor stages and any filter reactors (per IEC 60831 / IEC 61642) may need re-tuning to the new load profile — reusing the old site's settings can mean under- or over-compensation. For lighting, if floor area or ceiling height differs from the old site, illuminance needs recalculating per TS EN 12464-1:2021; mounting existing fixtures straight onto a different ceiling height usually results in inadequate levels.

Cabling and Labeling Strategy

One of the biggest time sinks in a relocation is answering "where did this cable go?" at the new site. The fix is a consistent labeling standard applied before dismantling begins: both ends of every cable get a permanent label identifying source and destination panel or machine, recorded also in a digital cable schedule that becomes the field team's reference during reinstallation. A good labeling standard pays off long after the move too — it's a permanent asset for future maintenance and fault-finding.

Legal and Procedural Requirements

If the new site is in a different OIZ or a different utility service area, existing project approvals do not automatically transfer to the new address. The electrical project needs re-approval for the new address, supported by an updated short-circuit calculation where applicable. For facilities with their own substation, the YGİS (MV Operating Responsible) appointment must also be re-made for the new site — the old site's appointment does not carry over. Under Law No. 6331 on Occupational Health and Safety, the new site's periodic inspection and earthing measurement reports need to be re-issued as well; the facility cannot go into operation without them.

Team and Responsibilities During the Move

The electrical side of a relocation is not a single-contractor job — it needs a coordinated team: production planning (phased transition schedule), electrical engineering (dismantle/rebuild design, test protocols), field crew (physical work), and the utility/OIZ liaison (new connection, provisional acceptance). Having EMO-registered engineers carry responsibility start to finish matters for both safety and legal compliance, particularly for documentation that must be re-approved rather than simply carried over.

Common Mistakes

• Starting dismantling without an inventory: Undocumented circuits or surprise equipment found on-site derail the plan from the start.
• Skipping cable labeling: Significantly extends reconnection time at the new site.
• Assessing the new site's connection capacity only after the relocation decision: If the grid connection turns out insufficient, the whole timeline slips.
• Not securing panel internals for transport: Breaker and relay damage causes unexpected faults during re-commissioning.
• Cutting corners on re-commissioning tests: Assuming "it worked before" skips over hidden insulation or connection faults.
• Not updating power-factor correction settings for the new load profile: Carries the reactive-penalty risk straight into the new facility.

FAQ

When should electrical planning for a factory relocation start? Ideally the moment the relocation decision is made — at least four to six weeks ahead — to minimize downtime. Steps like assessing the new site's connection capacity and securing project approval require that lead time.

Can existing panels be reused directly at the new site? Usually yes, but they need to pass post-transport insulation and continuity testing, have their busbar connections checked, and have protection settings verified against the new site's load and short-circuit conditions.

Does production have to stop completely during the move? No — with a phased relocation plan, some lines can keep running at the old site while others come online at the new one. That's the main advantage of a well-planned move.

What changes if the new site is in a different OIZ? Project approval, provisional acceptance and, where applicable, the YGİS appointment all need to be redone; approvals from the old site don't carry over to the new address.

Is it safe to reuse existing cables? Cables that weren't damaged during dismantling, weren't bent past their minimum radius, and pass an insulation test can be reused; anything questionable should not go back into service untested.

How is a facility with its own substation relocated? Moving a transformer and MV switchgear requires specialized transport and reinstallation, and the provisional acceptance process at the new site starts from scratch — we cover this in detail in our substation setup guide.

Which tests are mandatory after the move? Insulation resistance, continuity, earthing measurement and protection relay function tests are the minimum requirements; facilities with their own substation also need an updated short-circuit calculation.

How long does the whole relocation process take? It depends on the facility's size, the new site's connection status, and whether the move is phased or done in a single step — anywhere from a few weeks to a few months. Early planning is what shortens that window the most.

Conclusion

The electrical side of a factory relocation is manageable enough, when planned properly, to turn weeks of downtime into days. The key is a complete inventory and labeling pass before dismantling, physical protection of equipment in transit, and a full — not abbreviated — commissioning test at the new site. SOREAS manages factory relocations across Bursa and the wider Marmara Region end to end, from dismantling the electrical installation through provisional acceptance at the new site, with an EMO-registered engineering team.