12 Calculators

Electrician Calculators

Panel upgrades, EV chargers, wire sizing, conduit fill, permits — every calculator an electrician needs to quote jobs fast and never leave money on the table.

Installation & Upgrade

Electrician · #001
Panel Upgrade Cost
100A to 200A or 400A — price the full scope including meter base, riser, permit, and utility coordination.
Electrician · #024
EV Charger Installation Cost
Level 2 EVSE with wire run, conduit, panel capacity, and permit — NEC 625.41 125% rule built in.
Electrician · #023
Ceiling Fan Installation Cost
Fan-rated box check, vaulted ceiling multiplier, height factor, and additional fan efficiency pricing.
Electrician · #021
GFCI Outlet Installation Cost
By wiring condition — aluminum wiring, 2-wire, new circuit — with location multipliers and CO/ALR alerts.
Electrician · #025
Smoke & CO Detector Installation
Hardwired interconnected per NFPA 72 — by unit count, wiring method, stories, and report type.
Electrician · #012
Outdoor Lighting Installation
Fixture type, wire run, switch location, and conduit routing — quote landscape, security, and area lighting.
Electrician · #015
Generator Installation Cost
Standby generator with transfer switch, pad, gas line coordination, and permit — full installed scope.
Electrician · #011
Circuit Breaker Replacement
Standard, AFCI, GFCI, or tandem — by panel type and breaker count with minimum service call floor.

Code, Sizing & Permits

Electrician · #022
Electrical Permit Cost
Three fee structures — flat, valuation-based, unit-based — plus inspection time and overhead markup.
Electrician · #008
Electrical Load Calculation
NEC Article 220 service load — general lighting, appliances, HVAC, EV circuits, and demand factors.
Electrician · #010
Conduit Fill Calculator
NEC Table 1 fill percentages — EMT, RMC, PVC — multiple wire sizes and conductor counts.
Electrician · Reference
Wire Gauge & Amperage
AWG to ampacity reference — copper and aluminum, NEC 310.15 derating for conduit fill and temperature.

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