Generator & Backup Power

Portable generator connections

Generator inlet boxes and listed interlock/transfer methods can provide a safe way to energize selected home loads from a portable generator.

Standby generators

Standby generator projects may include the generator, automatic transfer switch, electrical materials and labor, electrical permits and testing, as specified in the written quote. Fuel connections and site preparation are separately scoped.

Sizing & site review

Generator sizing, natural-gas capacity, placement, transfer equipment, existing electrical service, panel configuration and permit requirements must be reviewed for the specific home. Backup coverage depends on actual loads and any required load-management equipment.

What to send before the visit

Photos of the main electrical panel label, service equipment and proposed generator location
Whether the property already has natural gas and where the gas meter is located
Which appliances and systems must stay powered during an outage, especially large electrical loads
Whether you have an existing generator, transfer switch, or other backup equipment

18 kW Generac + 200A ATS · $10,995

Before applicable sales tax. See the advertisement and terms below for included work, installation assumptions, and exclusions.

Doctor Electrical Services advertisement: 18 kW Generac plus 200A automatic transfer switch, $10,995 before applicable sales tax. Includes standard short-run electrical labor and materials, generator, ATS and permit coordination. Gas and pad work by others. Product illustration, not an exact equipment photograph.

Promotional graphic uses illustrative equipment renderings. Actual generator and transfer switch models, placement, and final scope are confirmed by the written estimate. For product photography and model details, see the Generac 18 kW Guardian and Generac 200A service-rated ATS manufacturer pages. These are manufacturer examples; exact compatible equipment is confirmed before contracting. The $10,995 package assumes an existing suitable 200A service and short, accessible electrical runs. Included: generator, compatible 200A ATS, starting battery, standard electrical labor and materials, electrical permit, inspection coordination and electrical testing after gas connection by others. Generator base, gas supply/capacity verification, gas piping, gas permits and final gas hookup are by others. Trenching, longer wiring runs, panel/service upgrades, extra load-management hardware and other work outside the standard electrical scope are quoted separately if needed. Price excludes applicable sales tax and requires a qualifying site review and final written estimate. The 18 kW generator is rated 17 kW on natural gas; 200A ATS rating does not mean all loads can run simultaneously.

Manual generator inlet and interlock packages

A professionally installed outdoor inlet and a panel-compatible, listed interlock let you connect your own portable generator and manually select supported circuits during an outage. These are manual backup connections, not automatic standby systems. Pricing assumes a suitable existing panel and short, accessible back-to-back wiring.

30 AMP

30A manual generator connection

Weather-rated 30A generator inlet, compatible listed breaker/interlock, standard short-run wiring, labeling and electrical testing.

Electrical package: $995
Electrical permit and standard inspection: $350

Installed total before tax$1,345

Request a 30A Estimate

50 AMP

50A manual generator connection

Weather-rated 50A generator inlet, compatible listed breaker/interlock, standard short-run wiring, labeling and electrical testing.

Electrical package: $1,650
Electrical permit and standard inspection: $350

Installed total before tax$2,000

Request a 50A Estimate

What's included: listed panel interlock (where compatible), required inlet, suitable breaker, short direct wiring, ordinary weatherproof fittings, labeling, electrical labor, testing, and permit/standard inspection. We use a flat $350 permit and standard inspection charge regardless of job-site jurisdiction within our service area; it is already included in the displayed installed totals.
What's not included: portable generator, generator cord, extended conduit or wiring, trenching, panel replacement, special electrical repairs, specialty compatibility equipment and unforeseen access work. Extra work is quoted before proceeding.
Qualifying installation: existing panel must accept a manufacturer-approved listed interlock and suitable breaker and have sufficient capacity; inlet location must allow a short, accessible back-to-back run. Final panel compatibility, site scope and any additional work are confirmed by a written estimate. Tax is additional at the job-site rate. Manual interlock systems require the homeowner to operate the generator and transfer controls; they do not start or transfer power automatically.