Installing a subpanel takes 4 to 8 hours on average, depending on the number of circuits, distance between the panels, and amount of drywall repair needed. How long does it take to install a subpanel? Consult a licensed electrician to ensure proper wiring, grounding, and code compliance. Incorrect subpanel wiring may cause corrosion, shock, or electrical fire. Subpanel installation FAQs What is a subpanel?Ī subpanel is a smaller service panel fed by a 240V breaker on the main panel to extend its circuit capacity.Ī subpanel does not increase the home's total power, only its power distribution capabilities, useful for adding circuits to a specific area like a new room or garage. The subpanel amps should not exceed 50% of the main panel amps.īreaker box replacement costs $1,400 to $2,800 when upgrading to 200-amps. Moves requiring power company involvement also typically cost more.įuse boxes and 60 to 100-amp main service panels common in older homes are not designed to run most modern appliances.Įxperts recommend upgrading to a 200-amp main panel when installing a 100-amp subpanel. Moves involving major rewiring or extensions may require adding junction boxes and connectors, increasing material and labor costs. Moving a subpanel costs $1,000 to $3,000+, depending on the distance, number of circuits, and job complexity. Rewiring a house costs $2 to $4 per square foot. Wiring through walls or underground takes longer and costs more than exterior wiring along a wall. Wiring costs depend on the subpanel's location, number of circuits, wiring distance, and the amount of drywall work involved. New subpanel electrical wiring costs $7 to $10 per linear foot. Labor costs depend on the size, number of circuits, and whether the current circuits are to code or need rewiring. Most electricians also charge a $75 to $125 service call fee. Installing a GFCI outlet costs $100 to $175 if replacing an existing standard outlet or $150 to $350 when installing a new outlet.Įlectrician labor cost to replace a subpanelĮlectricians charge $40 to $100 per hour to replace a service panel. Installing a GFCI circuit breaker adds $10 to $100+ to the material cost. Some subpanel circuits may require GFCI protection for code compliance.īathrooms, kitchens, garages, and unfinished basements typically require this safeguard at the circuit breaker or outlet. Electrical subpanel installation in garage Subpanel requirements and upgrade costs Trenching costs $6.00 to $13.50 per foot to bury electrical wiring. Installing a subpanel in a detached garage or structure requires a disconnect switch, more materials, and trenching to run the wire underground from the main structure. Power requirements – Upgrading the main electrical panel may be required provide more power to the subpanel. Permits & inspections – Installing a subpanel often requires a permit and inspection:Īn electrical inspection costs $100 to $250. Materials and upgrades – Supplies needed typically include wiring, connectors, fasteners, junction boxes, and possibly GFCI circuits and outlets. Installing a dedicated circuit costs $250 to $900. Installing new circuit breakers costs $150 to $300 per breaker. Adding a new subpanel requires wiring each new circuit breaker to a receptacle or appliance. replacing – Replacing a subpanel typically requires less labor as the circuit wiring is already in place. Size and location – More circuits and a longer wiring distance require more labor and materials.Īdding vs. Subpanel installation cost breakdown Factor
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