A Sandton office can lose productivity without losing the whole building. One tenant may have a private distribution fault while lifts and common areas continue operating; a generator may start while a transfer fault leaves selected floors dark; or the public supply may return while an internal protective device remains tripped.
Facilities teams need more than a generator service sticker. A reliable continuity plan defines boundaries, essential loads, decision-makers, safe operating actions and the evidence required after every incident. This guide provides a practical structure for offices, mixed-use buildings and managed commercial property.
01
Map the supply boundary before the next outage
Identify the electricity supplier, point of supply, main metering arrangement, landlord distribution and tenant distribution. Record the authorised contacts for each layer. This makes it possible to decide whether an incident belongs to City Power or Eskom, building management, a tenant installation or a backup-power contractor.
The map does not need to expose sensitive technical detail to every occupant. Facilities teams should maintain a controlled record that identifies boards, essential circuits, isolation authority and escalation contacts.
- City Power or Eskom in Sandton? — A supplier-identification and fault-routing guide.
- Sandton power outage action plan — Official updates, fault logging and property-side checks.
02
Define essential loads in operational language
An essential-load list should state what the business must continue doing, not simply list breaker numbers. Access control, fire and life-safety interfaces, communications, server rooms, selected lighting, refrigeration, payment systems, lifts and water pumps have different priorities and restart behaviour.
Match each operational need to the actual circuit and backup source. If a circuit label cannot be reconciled with the connected equipment, correct the record before an emergency forces improvised decisions.
- The physical equipment and the circuit or board supplying it.
- Whether it is supported by generator, UPS, inverter or no backup source.
- Expected runtime and any start-up limitation.
- The person who may authorise shutdown or load shedding.
- The correct restoration and functional-check procedure.
03
Treat changeover equipment as part of the electrical installation
A generator, inverter or UPS only protects the business if the associated changeover, protection and distribution operate correctly. Loose assumptions about which source is active or which loads are connected can create danger, failed restoration and avoidable equipment damage.
Any grid-connected alternative-energy system must be safely integrated and must comply with the requirements of the relevant supplier and legislation. Eskom’s current guidance emphasises registration, compliance documentation and protection against dangerous back-feed; municipal customers should confirm the applicable City of Johannesburg process.
- Eskom SSEG information — Official registration and safety guidance for Eskom-supplied customers.
- Wesslink electrical services — Planned electrical, backup-power and property support.
04
Test the sequence—not only the equipment
A maintenance visit may confirm that a generator starts, but a continuity exercise should verify what happens from loss of supply through transfer, stable backup operation, return of utility supply and restoration of every essential service.
Plan controlled tests with affected occupants and specialist contractors. Record alarms, delays, failed circuits and manual interventions. Do not conduct an unplanned live-supply test or operate equipment beyond the authority and competence of the people involved.
- Notification and decision-making roles.
- Safe transfer and essential-load operation.
- Fuel, battery or runtime assumptions.
- Restart behaviour of lifts, access, pumps, IT and other critical systems.
- Stable return to normal supply and closure of all alarms or temporary measures.
05
Use one incident record from failure to close-out
Record the start time, extent, supplier status, fault reference, equipment response, actions taken, partial restoration and final close-out. When the public supply returns, confirm that every private board, phase and critical load returned normally before closing the incident.
Repeated records reveal patterns that memory misses: one tenant floor that regularly remains off, a changeover that requires manual assistance, batteries that no longer achieve the planned runtime or a board that trips after supply restoration.
06
Convert incident evidence into planned electrical work
Separate immediate corrective work from resilience improvements. A failed contactor, damaged cable or recurring trip needs diagnosis; clearer labelling, updated single-line records, load studies, thermal assessment or revised essential-load priorities may form part of the longer plan.
Wesslink assists Sandton offices and managed properties with private-installation fault finding, distribution-board work, maintenance and backup-power integration. The public network remains the supplier’s responsibility, but the property should be ready to respond safely and consistently.
- Commercial electrical services — Electrical support for operating properties.
- Property managers and complexes — Managed-property maintenance and reporting.
- Electrician in Sandton — Local Sandton service hub.
FAQ
Questions readers also ask
What should a Sandton office do first during a power outage?
Establish the extent, confirm whether common areas and neighbouring properties are affected, check the official supplier channel, log a traceable fault where required and confirm the private backup and distribution response.
Can a private electrician repair a City Power or Eskom outage?
No. Public-network faults belong to the supplier. A private electrician can diagnose the property installation, distribution, changeover equipment and faults that remain after public supply returns.
How often should office backup power be tested?
Use the equipment manufacturer’s requirements, the responsible contractor’s maintenance plan and the property’s operational risk. Periodic functional exercises should also test the complete transfer and restoration sequence.
Why did some office circuits stay off after power returned?
Possible causes include a private protective-device trip, phase or distribution problem, failed contactor, changeover issue or equipment restart requirement. The remaining fault needs property-side investigation.
What records should facilities keep after an outage?
Keep the start and restoration times, affected areas, supplier reference, backup response, actions, remaining faults, equipment alarms and evidence that essential services were functionally restored.
