Standby Generator Installation in South Carolina: Steps & Responsibilities

The standby generator installation process in South Carolina is a coordinated electrical, fuel, site, approval, and commissioning project. It is not simply delivery of an engine in an outdoor enclosure. A complete result connects an exact generator to an approved fuel path and transfer architecture, places it at a feasible site, verifies the household’s supported loads, closes applicable permits and inspections, demonstrates the promised operating modes, and hands the owner usable records and maintenance responsibilities.

There is no universal statewide schedule or permit sequence. Natural gas and propane involve different parties. A whole-service transfer and selected-load panel create different electrical work. Flood exposure, easements, openings, access, utility-controlled service equipment, HOA review, and local administration can change the process.

This article is a neutral phase-and-responsibility map. It does not state Sunburst’s exact workflow, name supported products, or promise which entity performs fuel work, pulls a permit, conducts a test, provides maintenance, or secures an approval. The signed proposal must identify those duties.

Generator installation steps at a glance

Use these phase gates to keep equipment from moving ahead of evidence.

Phase	Main decision	Evidence before moving forward	Responsibility that must be named
Outage and load brief	What must the system do?	Ranked loads, simultaneous states, motor starts, exclusions	Designer responsible for calculation and owner acceptance
Fuel feasibility	Can natural gas or propane support the exact design?	Provider/supplier review, meter/tank/regulator/piping basis, other loads	Qualified fuel entity and coordination owner
Site review	Is there an approvable, serviceable location?	Location alternatives, exact manual, flood/drainage/exhaust/access record	Site/design professional and AHJ contact
Electrical and transfer design	How are sources isolated and loads controlled?	One-line, ATS/service boundary, load controls, ratings/listings	Qualified electrical designer/contractor
Scope and contract	Who delivers the complete result?	Equipment/work schedule, approvals, tests, handoff, exclusions	Prime contractor and each subcontracted/legal entity
Approvals	What must be permitted, inspected or coordinated?	Current address-specific AHJ/provider/supplier path	Filer, correction owner, fee payer and scheduler
Pre-install readiness	Are design, equipment, access and shutdowns ready?	Released drawings, verified models, work plan, change rules	Project coordinator and trade leads
Installation	Was the approved system built safely?	Field records, model/serials, documented design changes	Licensed/qualified parties for each scope
Inspection and closeout	Are corrections and provider conditions resolved?	Inspection/permit/provider records and as-builts	Named closeout owner
Commissioning	Does the complete operating plan work?	Recorded transfer, loads, starts, controls, fuel and recovery tests	Commissioning authority and correction owner
Handoff and maintenance	Can the owner operate and preserve readiness?	Manuals, settings, accounts, warranties, contacts, maintenance plan	Owner, product servicer, fuel provider and contractor duties

Some phases can overlap. A fuel-provider question may need an answer before a final site plan. An AHJ comment can send the project back to design. The useful process records each return and updates the equipment, scope, approvals, and acceptance plan.

Step 1: Define the outage operating plan

Begin with the household outcome, not a generator brand or square-footage rule. Record why backup power matters and what interruption the household can accept.

Classify loads:

• Must remain available: equipment tied to safety, health, water, drainage, refrigeration, communications, security, temperature/humidity, or property protection as the household defines them.
• May cycle or be delayed: equipment that can pause under a written priority plan.
• Manual use only: loads the owner may enable only under stated conditions.
• Not supported: loads excluded from the standby boundary or blocked while the generator operates.
• Requires a separate continuity plan: medical and life-safety needs that should not rely on an unverified residential generator promise.

Develop credible occupied, overnight, seasonal, unoccupied, and post-transfer recovery states. Collect exact equipment/nameplate/manual information and identify motors or compressors that may start while background loads operate. Monthly energy and main-breaker amperage do not describe these events.

The generator sizing guide owns the full simultaneous-load and motor-start method. The installation process should not proceed to an exact generator until that record identifies:

• included and excluded loads;
• operating states;
• controlling start event;
• load-control assumptions;
• proposed fuel-specific generator rating; and
• commissioning case that will prove the selection.

Do not turn whole house into an unstated promise. The transfer boundary may include a broad service while generator output and controls limit simultaneous operation.

Gather the owner record

Useful starting documents include:

• current electric and fuel bills/provider information;
• safely collected service/panel photos and available one-lines;
• major-load labels/manuals;
• existing natural-gas meter/regulator information or propane tank/supplier records;
• solar, battery, EV, smart-panel or old generator documents;
• property survey, flood information, HOA rules or site plans already available;
• outage priorities and household-absence scenarios; and
• warranty/ownership records for equipment that may be affected.

The homeowner should not open panels, measure fuel pressure, inspect energized equipment, enter unsafe areas, or move equipment to reduce the assessment scope.

Step 2: Verify the fuel path before committing equipment

The generator must receive fuel within the exact manufacturer’s requirements under the agreed load condition. A gas pipe near the proposed site or propane tank on the property is not a feasibility conclusion.

Natural-gas process questions

Confirm the actual provider and address-specific service. Then assign responsibility for:

• providing generator demand and total connected gas-load information;
• reviewing meter and regulator capacity;
• verifying available pressure/flow under applicable conditions;
• documenting other gas appliances and coincident demand;
• designing pipe material, route, equivalent length, fittings and connection;
• requesting provider work or service changes;
• permitting/testing/inspection as applicable;
• coordinating generator startup; and
• handling a failed capacity or under-load pressure result.

A natural-gas account does not guarantee fuel availability during every outage. Provider equipment and customer-side work should be separated in the scope.

Propane process questions

Identify tank ownership, supplier, existing agreements, regulators, piping, other loads, refill point and access. Assign responsibility for:

• usable storage and vaporization review under stated conditions;
• generator and other-appliance demand;
• tank, regulator and piping design/condition;
• supplier notice or permission where required;
• new tank/equipment placement and protection;
• inspection/testing and startup supply;
• level monitoring and refill arrangements; and
• access after storm, flooding, debris or evacuation.

South Carolina’s LP Gas Board publishes licensure requirements for covered propane activities and says in its FAQ that LP-gas authority does not also authorize natural-gas work. The proposal should name the responsible legal entities separately. It should not describe everyone as the generator team.

Use the natural-gas versus propane generator guide for the full fuel-path decision. This process page does not publish consumption, tank size, runtime, fuel price, or availability promises.

Step 3: Develop site alternatives

The site must work for the generator, exhaust, fuel, electrical route, maintenance, property constraints, weather and approvals together. Choosing the nearest flat area before checking those relationships can create redesign.

Record at least one preferred and, where practical, one alternate location. Evaluate:

• exact manufacturer installation requirements;
• exhaust direction and building openings;
• combustion/cooling airflow;
• carbon-monoxide risk and household alarms/response plan;
• generator, ATS, controls and fuel-equipment environment;
• natural-gas meter or propane tank/regulator relationship;
• property lines, easements, zoning and HOA/architectural review;
• drainage, low points, flood zone, design elevation and access after flooding;
• pad, stand, anchorage and structural responsibility;
• wind, salt/coastal exposure, direct weather and debris;
• noise under the exact manufacturer’s stated test condition if relevant;
• trench/conductor/fuel route and surface restoration;
• delivery, lifting, maintenance and replacement access; and
• emergency responder access and shutdown information.

CPSC’s 2025 stationary-generator carbon-monoxide report confirms that permanently installed generators have a CO hazard requiring specific mitigation. Do not copy portable-generator placement distances as a universal stationary-generator clearance. The exact equipment manual, adopted requirements, site and AHJ control.

FEMA’s building utility-system flood guidance supports treating the generator, transfer, controls, distribution, wiring, fuel storage, anchorage/elevation and access together. Elevating only the engine enclosure may leave other critical components exposed. It does not supply one universal South Carolina elevation or platform detail.

Step 4: Complete the electrical and transfer design

The generator needs an approved way to isolate utility and standby sources and serve the intended loads. The design should begin with the actual service and panels, not a packaged ATS label.

Request an electrical one-line showing:

• utility meter/service and disconnect;
• generator, breaker/disconnect and conductors;
• exact ATS and transition method;
• service-entrance or downstream arrangement;
• main and selected-load panels;
• load-control sensors, relays/contactors, modules and communications;
• solar, battery, EV and other distributed equipment;
• grounding/bonding and neutral arrangement as professionally designed;
• protection and short-circuit basis; and
• normal and generator power paths.

The generator transfer-switch guide owns selected-load, service-entrance/whole-service, and managed-load architecture. Before installation, its result should identify:

• exact listed ATS and generator/controller compatibility;
• service-equipment status where required;
• selected circuits or broad transfer boundary;
• load priorities, delays, shedding and restoration;
• control measurement point and settings;
• failure behavior and owner indications;
• interaction with other energy sources; and
• acceptance tests.

UL Solutions identifies UL 1008 coverage for optional-standby transfer switches. A listing is necessary evidence, not proof that the specific service, protection, neutral/grounding, generator, controller and load devices are compatible.

Electrical service work can require coordination with the utility for shutdown, meter access, disconnect/reconnect or other provider-controlled tasks. Open-transition residential standby and equipment capable of parallel operation can follow different paths. Obtain the actual provider’s answer rather than promising that interconnection does or does not apply.

Step 5: Build the design and responsibility package

The project should have a coherent design basis before irreversible commitments. Depending on the scope, request:

• site plan and equipment locations;
• electrical one-line and load schedule;
• generator/ATS/load-control/fuel equipment schedule;
• current technical data and installation manuals;
• fuel calculation/design and responsible entity;
• structural, pad/stand, anchorage or flood design as applicable;
• electrical/service/transfer/control design;
• normal, outage, low-fuel/fault and grid-return operating narrative;
• permits, inspections, provider/supplier and HOA tasks;
• installation and restoration scope;
• commissioning/acceptance plan;
• owner handoff documents;
• maintenance, warranty and service responsibility; and
• unresolved conditions and alternatives.

Create a responsibility matrix:

Scope	Responsible legal entity	Deliverable	Completion evidence	Contingency owner
Load calculation and generator selection	Named designer/contractor	Load/start record and exact rating	Approved calculation/design basis	Revises after load change
ATS/service/load control	Named electrical entity	One-line, equipment, settings	Inspection and commissioning record	Corrects failed mode
Natural gas	Named provider/qualified contractor	Meter/regulator/piping scope	Provider/test/inspection record	Handles inadequate supply
Propane	Named licensed dealer/installer/supplier	Tank/regulator/piping/supply scope	Inspection/startup record	Handles access/supply issue
Site/flood/stand	Named contractor/design professional	Site/structural details	Permit/inspection/as-built	Addresses rejected location
Permits and inspections	Named filer/coordinator	Applications and corrections	Final status records	Owns revisions/fees per contract
Commissioning	Named qualified parties	Mode-by-mode test	Dated results/retests	Returns after failure
Handoff/maintenance	Named contractor/servicer/owner	Accounts, manuals, plan	Signed handoff	Handles ongoing readiness

Do not infer that one electrical, gas, propane, builder or generator credential covers every row. Verify current South Carolina credentials for the actual scope.

Step 6: Convert the design into a complete contract

The contract turns the neutral process into the project’s actual sequence. Mark each equipment/work item as included, allowance, excluded or owner-provided. State what triggers a change order.

The generator installation cost guide owns complete installed-cost and bid normalization. Before comparing totals, align:

• exact generator and factory accessories;
• ATS, load controls and service/panel work;
• fuel provider, meter/regulator, tank, piping and startup supply;
• pad/stand, trenching, flood/site work and restoration;
• permits, engineering, fees, corrections and inspections;
• delivery, rigging, setup and programming;
• utility/service/supplier coordination;
• commissioning and owner training;
• monitoring/accounts/subscriptions;
• warranties, service and maintenance; and
• closeout documents and final-payment trigger.

The contract should say what happens when:

• the AHJ rejects the proposed location;
• fuel capacity or pressure is inadequate;
• existing service/ATS/pad/piping cannot be reused;
• hidden site/electrical conditions appear;
• utility work changes;
• exact equipment becomes unavailable;
• the model or control system is substituted;
• an inspection requires correction; or
• commissioning fails a promised operating mode.

A product substitution should repeat compatibility, rating, fuel, site, listing, drawings, approvals, warranty and acceptance review. Similar kW or amperage does not prove equivalence.

Step 7: Identify permits, inspections and provider steps

South Carolina’s Building Codes Council publishes the current code-adoption path. The actual authority having jurisdiction, filing date, property, exact equipment and project scope determine requirements.

Permanent generator projects may involve electrical, fuel-gas, building/site, zoning, flood, architectural or other review depending on the address. The City of Charleston’s residential generator guidance is one example that separates several of those questions. It is not a statewide checklist.

Ask the contract to identify:

• every expected authority/provider/supplier review;
• required plans and professional seals;
• who submits applications;
• who pays listed fees;
• who responds to corrections;
• who revises the design/contract after a condition changes;
• inspections and witness tests expected;
• utility service interruption/reconnect responsibility;
• propane supplier notice/inspection responsibility where applicable; and
• the evidence needed before normal automatic operation.

Track submitted, permit issued, inspection passed, utility/provider task complete, and authorized/accepted operation separately. None is a universal synonym for project completion.

Do not publish a statewide number of permits, standard fee, review duration, installation window or inspection order. A contractor estimate should list assumptions and dependencies rather than present them as guaranteed.

Step 8: Complete pre-install readiness

Before field work, confirm:

• current released drawings and revision;
• exact generator, ATS, controls, fuel equipment and accessories received;
• no unapproved substitutions;
• site location and access remain available;
• permits/authorizations required for the work stage are in place;
• utility/fuel-provider coordination is scheduled where needed;
• delivery, lifting, storage and damage responsibility is assigned;
• household/service interruption plan is communicated;
• sensitive medical, security, refrigeration, well, gate or communications loads have a temporary continuity plan;
• weather/flood/site conditions permit safe work;
• restoration boundaries are marked; and
• change-order and escalation contacts are known.

The generator cannot serve as the temporary continuity plan before it is installed, fueled, inspected and commissioned. Owners should receive clear notice of planned interruptions without a universal duration promise.

If a field condition contradicts the drawings, stop the affected scope and return it to the responsible designer/coordinator. Do not allow schedule pressure to convert an unreviewed field fix into the as-built design.

Step 9: Install each scope through qualified parties

The work may include site preparation, pad/stand/anchorage, trenching, generator placement, fuel tank/regulators/piping, electrical conductors/disconnects, ATS/service/panel work, selected-load circuits, load controls, monitoring, labels and restoration. Exact sequencing depends on property and approvals.

Process controls matter more than a universal crew order:

• install exact equipment to the current approved design and instructions;
• protect clearances, access, drainage and environmental conditions;
• document concealed routes/work where useful or required;
• record model and serial numbers;
• identify conductors, circuits, sensors and controls accurately;
• preserve source isolation and approved equipment relationships;
• perform fuel/electrical tests through responsible qualified parties;
• document field changes and submit revisions as required;
• protect the property and restore contracted surfaces; and
• keep equipment unavailable for unsupported operation until applicable startup/approval gates are met.

This article is not a DIY pad, wiring, transfer, gas, propane, pressure-test or startup guide. Those activities can create shock, arc, fire, explosion, backfeed, exhaust and carbon-monoxide hazards.

Step 10: Close inspections and corrections

Inspection checks the authority’s applicable scope. It is not the same as commissioning the household operating plan.

The owner should receive, as applicable:

• permit numbers and final status;
• inspection card or portal record;
• correction notices and closure evidence;
• approved/as-built drawings when required;
• fuel-system testing/inspection records;
• utility service-work or reconnect record;
• propane supplier/board-related records as applicable;
• equipment startup authorization/status; and
• remaining restrictions or deferred conditions.

If the field installation differs from submitted documents, determine whether permits, provider records, calculations and commissioning tests need updates. Do not hide a design change behind a clean inspection label.

Passing inspection does not prove generator capacity, fuel pressure under agreed load, ATS control priorities, monitoring, or owner training. Those belong to commissioning and handoff.

Step 11: Commission the complete standby system

A no-load engine start proves only that part of the generator operated at that moment. Commissioning should demonstrate the agreed operating plan through safe, manufacturer-supported procedures performed by qualified parties.

Depending on the approved design, record:

1. exact generator, ATS, controls, accessories, firmware/configuration and settings;
2. fuel configuration and required pre-start checks;
3. normal-source sensing and generator start request;
4. acceptable generator source and transfer/isolation;
5. selected protected and intentionally excluded circuits;
6. staged simultaneous loads;
7. controlling motor/compressor starts with stated background load;
8. load-management delay, shedding, priority and restoration;
9. generator voltage, frequency, current and alarms specified by the plan;
10. fuel inlet condition or other fuel-system readings under the agreed load where applicable;
11. safely testable control/communication fault behavior;
12. utility return, retransfer and shutdown/cooldown sequence;
13. monitoring, notifications and account behavior if included;
14. owner controls and limitations; and
15. exceptions, corrections and retest results.

Do not promise a transfer time, maximum load, runtime, fuel consumption or fail-safe outcome without exact equipment and tested criteria. Do not intentionally overload equipment, defeat interlocks, improvise fuel adjustments, parallel sources or simulate unsafe faults.

DOE/FEMP and PNNL’s standby-generator O&M guidance supports planned testing, qualified maintenance and records. Its detailed examples focus heavily on facility/commercial systems and do not establish residential maintenance intervals or test procedures. The exact manuals and contract control.

Step 12: Hand the owner a complete system record

The closeout package should let a future qualified servicer understand the design without reconstructing it from marketing materials.

Request, as applicable:

• as-built site plan and electrical one-line;
• load and circuit schedule;
• generator, ATS, controls, fuel equipment and accessory model/serial list;
• fuel-system calculation/design and provider/supplier records;
• load-management settings and priority schedule;
• permits, inspections and utility/provider closeout;
• startup and commissioning report;
• owner/admin monitoring access;
• manuals and safe shutdown/emergency information;
• manufacturer registration evidence;
• product, ATS/accessory, workmanship and fuel-work warranty documents;
• maintenance/service agreement and exclusions;
• support, fuel-provider and escalation contacts;
• owner training record; and
• future-change warning for HVAC, well, pool, EV, panel, solar, battery, fuel or control changes.

The warranty overview is a general question framework. Actual generator, ATS, accessory, installer, fuel contractor and service documents define coverage. Do not assume diagnosis, travel, labor, shipping, removal/reinstallation, fuel, consumables, temporary power or emergency response is included.

Accounts should be placed under owner-accessible credentials, not left solely with a salesperson. Record who receives alarms, who can change protected settings, what works without internet, and how account access transfers after a home sale.

Step 13: Establish maintenance ownership

Installation completion begins the ownership phase. A generator, engine starting battery/charger, fuel system, ATS, load controls, enclosure/site and monitoring can all affect readiness.

Create a maintenance responsibility matrix from current exact manuals and contracts:

System area	Owner observation/action	Qualified service action	Responsible provider	Record retained
Generator/engine	Approved status/alarm checks	Manufacturer-specified inspection/service	Named generator servicer	Service log
Starting system	Observe alerts/status as instructed	Battery/charger tests and replacement	Named servicer	Test/replacement record
Fuel system	Maintain account/access/level duties as applicable	Qualified fuel inspection/service	Utility, propane supplier or contractor	Provider/service record
ATS/load controls	Report abnormal behavior	De-energized inspection and functional service per exact requirements	Qualified electrical/ATS servicer	Settings/test record
Site/exhaust	Keep owner-access areas free of new obstruction under instructions	Inspect mounting, exhaust and site issues	Named contractor/servicer	Inspection record
Monitoring	Maintain owner account/connectivity if included	Diagnose platform/controller faults	Named support party	Alert/ticket history
Functional readiness	Follow safe owner test/observation plan	Perform supported transfer/load tests	Named qualified party	Dated test results

Do not copy a facility checklist or generic monthly/annual interval into a residential contract. The product’s current manual, operating hours, environment, fuel, warranty and service agreement determine applicable tasks and timing.

Automatic exercise is not necessarily a full transfer/load/fuel/control test. The owner should understand what exercise proves, what it does not test, what alarms require action, and who schedules deeper functional verification.

Step 14: Accept the project from evidence

Final acceptance should reconcile the signed scope with the actual delivered system. Use an exception log:

• complete;
• corrected and retested;
• owner-accepted written limitation; or
• open with responsible party and remedy.

Confirm:

• equipment and design match or approved changes are documented;
• loads/starts and transfer/control outcome are demonstrated;
• fuel system passes the agreed under-load criteria;
• permits, inspections and provider conditions are clear;
• restoration and labels are complete;
• owner accounts and controls work;
• manuals, as-builts, warranties, registrations and test records are delivered;
• training and limitations are understood;
• maintenance/service responsibilities are assigned; and
• allowances/change orders are reconciled.

The contract—not this guide—should define substantial completion, final completion, final-payment trigger, punch-list treatment and remedies. If an approval or fuel-provider task will occur later, that dependency should already be reflected in completion and payment language.

What can send the process back a phase?

Common return points include:

• missing/incorrect load or service records;
• generator or motor-start mismatch;
• natural-gas meter/pressure or propane storage/vaporization issue;
• tank ownership/supplier restriction;
• unapprovable site, flood, exhaust or opening relationship;
• service/ATS/load-control incompatibility;
• solar/battery/EV interaction;
• AHJ or utility correction;
• inaccessible trench/delivery/maintenance route;
• product substitution;
• failed inspection;
• failed transfer, start, control or under-load fuel test; and
• homeowner priority change.

Returning to design is responsible when evidence changes. Require a written technical, scope, approval, warranty, schedule and acceptance-test revision. Do not preserve a promised completion date by silently weakening the operating outcome.

Preparing for a standby-generator assessment

Bring:

• outage priorities and unacceptable interruptions;
• major-load labels/manuals and known motor starts;
• electric service/panel records and safely taken photos;
• natural-gas account/meter information or propane tank/supplier/ownership records;
• property survey, flood/HOA/site information available;
• solar, battery, EV, smart-panel or old generator documents;
• travel/unoccupied-home and refill/access scenarios;
• preferred and alternate site ideas; and
• questions about fuel trades, permits, testing, records, maintenance and service.

Sunburst’s public backup-generator service confirms load, fuel, transfer, site, permitting, installation and testing context. It does not publicly identify every responsible trade, supported product, standard deliverable, commissioning test or maintenance duty. For the actual written project sequence, request a standby-generator assessment and require each phase, entity, condition, deliverable, test and exclusion in the proposal.

Sunburst runs this sequence as one contract rather than a chain of subcontractors. From our Daniel Island office we develop the outage operating plan with you, verify the fuel path, evaluate site alternatives against exhaust, flood and clearance rules, complete the electrical and transfer design, pull the county permit, install through licensed trades, close the inspections, and commission the complete system under load while you watch. You receive the system record and the maintenance ownership plan at handoff, and the installation is covered by our lifetime full-system warranty. The sequence is the same in Walterboro or Ridgeville as it is on the peninsula; only the county permit office changes.

Hurricane season sets the pace of this work in South Carolina, and lead times lengthen sharply once a storm is named. Starting in spring is a practical advantage rather than a sales line.

Related planning guides: sizing from real loads, where the unit can legally sit, fuel path verification and what the installed cost includes. If you would rather back up a smaller set of circuits silently, compare battery storage and battery installation in your city. We install across South Carolina — book a free assessment to start.

Standby generator installation FAQs

How long does generator installation take in South Carolina?

There is no universal schedule. Records, design, fuel/provider work, site conditions, equipment availability, permits, utility coordination, inspections, corrections and commissioning vary. Ask for milestones, dependencies and change conditions, not a statewide guarantee.

Which permits does a standby generator need?

The address, AHJ, electrical/fuel/site work and equipment control. Electrical, fuel-gas, site/building, flood, zoning or other review may apply. Obtain the current property-specific path before work.

Who installs the gas line or propane system?

The signed proposal should name the properly licensed/qualified legal entity. South Carolina treats LP-gas and natural-gas authority separately. Do not assume the generator seller or electrician owns both.

Does the utility need to be involved?

It depends on meter/service access, disconnect/reconnect, transition method, utility-controlled equipment and other interconnected sources. Obtain the actual serving provider’s answer and assign coordination.

Can equipment be ordered before permit and fuel review?

The contract should allocate the risk. Ordering before material feasibility gates can create redesign, substitution, restocking or delay. Resolve load, fuel, site, electrical and approval conditions first where practical.

Is inspection the same as commissioning?

No. Inspection covers the authority’s applicable compliance scope. Commissioning functionally demonstrates the agreed generator, ATS, loads, controls, fuel and recovery sequence. Both may be necessary.

Does an engine exercise prove the home is protected?

No. It may prove that part of the generator operated in the exercise configuration. It may not transfer the home, start controlling loads, test load shedding, verify fuel under load, or prove alarms and retransfer.

What happens if the preferred generator site is rejected?

The project should return to documented alternatives. Recheck fuel/electrical routes, exhaust/openings, flood, access, property constraints, equipment and cost/scope. The contract should identify who redesigns and how changes are approved.

Who maintains the generator after installation?

The proposal and maintenance/service documents should name owner duties and qualified parties for generator, ATS/control, fuel and monitoring work. Do not assume the installer provides ongoing maintenance or emergency response.

What records should the homeowner keep?

Keep as-builts, one-line/site plans, load and control schedules, model/serials, permits, inspections, provider/supplier documents, startup/commissioning results, settings, accounts, manuals, warranties, registrations and maintenance logs.

Sources and methodology

This guide was researched and updated on August 10, 2026. Official sources establish current verification and safety categories; exact equipment documents and project authorities control.

• South Carolina Building Codes Council code adoption
• City of Charleston residential generator guidance
• South Carolina residential/electrical licensure
• South Carolina LP Gas Board licensure
• South Carolina LP Gas Board FAQ
• UL Solutions transfer-switch certification
• DOE/FEMP equipment O&M summaries
• PNNL standby-generator O&M best practices
• FEMA utility-system flood protection
• CPSC stationary-generator carbon-monoxide report

The signed project documents must still confirm Sunburst’s actual fuel-trade, permit, testing, handoff and maintenance duties, supported products, schedule assumptions and acceptance trigger. This neutral process guide creates no such first-party promise.