Electrical systems · service · education

Understand your power.
Build it properly.

Explore what Castle Electric designs, installs, repairs and upgrades—from one receptacle to a new commercial service. Learn what matters, then choose how you want to start the conversation.

The electrical handbook

Start with the outcome—not the terminology.

You do not need to know what breaker, cable or control you need. Choose the area closest to your project. We explain the important decisions, common options and when it is worth having a licensed electrical contractor take a closer look.

Explore by category

Everything we can help power.

Select a category to filter the guide, or browse the complete library.

01

Capacity & distribution

Services, panels and breakers

Service and panel upgrades

Panel replacements and upgrades of existing services to 200A, 400A or larger where required; fuse-to-breaker conversions; meter bases; service entrances; grounding and bonding. We assess existing loads, future equipment and utility requirements before recommending capacity.

Plan a panel or service project
Breaker protection explained

Standard breakers protect conductors from overload and short circuits. Arc-fault protection is intended to reduce fire risk from dangerous arcing. Ground-fault protection reduces shock risk in required locations. The right protection depends on the circuit, location and current code requirements.

New power connections and services

New homes, additions, detached buildings, shops, farm structures, commercial units and upgraded equipment can require utility coordination, service design, distribution equipment, trenching or overhead work and inspection planning.

Load planning and future capacity

We consider electric heat, hot tubs, EV charging, cooking equipment, generators, additions and other planned loads together so today’s work does not become tomorrow’s bottleneck.

02

From plans to final devices

Renovations, retrofits and new builds

Custom homes and additions

Complete electrical planning and installation for new homes, additions, garages, basements and accessory buildings—including service, distribution, lighting, receptacles, controls, life-safety systems and future-ready pathways.

Plan a new-build project
Kitchens, bathrooms and basements

Dedicated appliance circuits, countertop receptacles, islands, ventilation, heated floors, lighting zones, dimmers, bathroom protection and practical basement layouts designed around how the room will actually be used.

Retrofits and rewiring

Modernizing existing systems, adding circuits, improving device locations, replacing aging equipment and working through finished areas with a clear access plan. Knob-and-tube and aluminum wiring require an assessment before the scope is defined.

Outdoor, farm and marine work

Weather-exposed equipment, outbuildings, pumps, docks, boathouses, shore power, agricultural loads and outdoor controls require equipment and wiring methods selected for the environment.

03

The systems used every day

Comfort, appliances and specialty power

Electric heat and ventilation

Baseboard and wall heating, thermostats, electric furnaces, unit heaters, bathroom exhaust fans, kitchen ventilation and related controls. Proper circuit sizing and control placement matter for comfort and serviceability.

Heated floors, pads and heat trace

Floor-warming systems, snow-melting pads and heat-trace cable for freeze protection or ice control. These systems need the correct controls, sensors, protection and installation approach for the application.

Kitchen and household appliances

Ranges, wall ovens, cooktops, microwaves, refrigerators, dishwashers, garburators, laundry equipment, pumps and other fixed appliances may need dedicated circuits, disconnects or manufacturer-specific provisions.

EV charging, hot tubs and backup power

Load assessment, feeder routing, equipment location, bonding, disconnecting means and future capacity for vehicle chargers, pools, spas, hot tubs and generator systems.

Plan one of these projects
04

Control without complexity

Smart homes, switching and automation

Smart switching and dimming

Connected switches, dimmers, multi-location controls, occupancy and vacancy sensors, daylight response, timers and scene keypads. We focus on reliable operation even when an app or internet connection is unavailable.

Plan smart-home controls
Receptacles and convenient power

Standard, tamper-resistant, weather-resistant, USB and USB-C charging receptacles; floor outlets; furniture power; dedicated equipment outlets and controlled receptacles—located for how the room works.

Whole-home integration

New smart homes and retrofits can bring lighting, schedules, sensors, exterior control, selected locks and other compatible systems into simpler routines. The goal is fewer daily steps, not more apps.

Networking, cameras and access

Structured cabling pathways, data locations, Wi-Fi access-point provisions, camera power and cabling, doorbell locations, automated locks and security-system electrical provisions can be planned alongside the electrical work.

05

Reliable power for operations

Commercial, retail and three-phase

Restaurants, stores and offices

Tenant improvements, equipment connections, display and task lighting, dedicated circuits, signage power, controls, data pathways, service changes and phased upgrades that consider operations and customer areas.

Plan a commercial project
Three-phase services and equipment

Distribution, equipment feeders, disconnects, motors and new commercial power requirements. Existing voltage, phase, available capacity and equipment data all need to be confirmed before design.

Emergency lighting and exit systems

Emergency lighting, exit signage, battery units, remote heads and required circuit arrangements should be planned, tested and maintained as part of the building’s life-safety strategy.

Maintenance, upgrades and locates

Troubleshooting, circuit identification, electrical locates, equipment changes, preventative maintenance and practical upgrade planning for occupied commercial spaces.

06

Find the issue. Reduce the risk.

Safety, inspections and troubleshooting

Diagnostics and intermittent problems

Power loss, nuisance tripping, flickering, warm devices, damaged wiring, failed equipment and unexplained electrical behaviour. A clear description, photos and what changed before the issue began can speed up diagnosis.

Start the diagnostic
Electrical inspections and assessments

Condition assessments, renovation planning, insurance-related concerns, aging wiring reviews and identifying visible hazards or limitations. The appropriate scope depends on why the inspection is needed.

Smoke, carbon-monoxide and fire alarm systems

Residential smoke and carbon-monoxide alarms, interconnection, replacement planning and commercial fire-alarm electrical work must follow the requirements applicable to the building and project.

Extension cords and temporary power

Extension cords are temporary—not a substitute for permanent wiring. The cord must suit the environment and load, remain undamaged, stay fully visible and receive required ground-fault protection. Repeated dependence on cords often signals that permanent receptacles are needed.

Visit the Safety Centre

Choose the easy next step

Build the details—or just talk to us.

The guided planner is useful when you want to organize ideas, photos and site details before contacting us. If that feels like too much, skip it. Call or email and we will start with a normal conversation.

Important:

This guide is general education, not a remote diagnosis or project-specific code determination. Electrical requirements depend on the installation, current regulations, utility requirements and inspection. Do not open energized equipment or attempt unsafe testing.