How to Rewire Your Deck for Added Safety Without Breaking the Bank
Introduction
Upgrading the electrical wiring on your deck can dramatically improve safety and allow you to power more devices and lighting. However, rewiring a deck can be an expensive project that requires hiring electricians. In this guide, I'll share tips for rewiring your deck on a budget while still meeting safety codes and needs.
Evaluate Your Current Deck Wiring
Before beginning any upgrades, take stock of your current deck wiring situation:
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Inspect the main electrical panel - Note the amperage rating and number of available slots for breakers. This will determine how much additional capacity you have.
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Check the wire gauge - Inside the deck's electrical boxes, look at the wire thickness. 12 AWG is generally the minimum for 15-20 amp circuits. Anything smaller may need upgrading.
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Test outlets - Use a receptacle tester to check for faults like open grounds, which can indicate unsafe wiring.
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Look for exterior-rated components - Standard indoor electrical parts can deteriorate outside. Check for outdoor-rated boxes, GFCI outlets, and exterior wiring.
Making note of any deficiencies or lack of capacity will help determine the scope of work needed.
Add Additional Circuits and Outlets
Most deck electrical problems stem from overloading existing circuits. Adding new dedicated circuits helps:
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Run additional lighting without dimming or tripping breakers
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Power high wattage appliances like speakers without problems
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Reduce fire hazard from overheated wires
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Provide isolation between lighting and receptacles
With easy access under the deck, running new wire is a DIY project. Use 12/2 NM cable and install a 15-20 amp GFCI breaker. Space outlets per code for convenience. Include waterproof covers for exterior outlets.
Upgrade Wire Gauge as Needed
If your deck wiring is undersized, upgrading the wire gauge provides:
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Increased capacity - Larger wires handle 15-20 amps safely
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Lower fire risk - Heavier wiring won't overheat
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Less voltage drop - Thicker cables maintain voltage over longer distances
For runs up to 50 feet from the panel, 12 AWG cable is ideal for lighting and receptacle circuits. Use 10 AWG for long runs over 50 feet. Compare costs of replacing only the wire versus new cable.
Install GFCI Protection
Ground fault circuit interrupters (GFCIs) are crucial for safety, especially in damp deck environments. Install GFCI protection a few ways:
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Use a GFCI breaker at the main panel
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Replace standard outlets with GFCI outlets
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Add GFCI receptacles at the beginning of runs
Test regularly using the "Test" and "Reset" buttons. Only about $20 per outlet, so well worth the protection.
Consider Aluminum Wiring Replacements
If your deck has outdated aluminum wiring, strongly consider replacing it with copper, especially if you see:
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Discolored wires at connections
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Frequent tripped breakers or flickering lights
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Outlets feeling warm - a sign of unsafe resistance
Properly installed copper wiring will remove the fire and shock risks associated with old aluminum wiring.
Add Lighting
Good lighting improves both safety and ambiance on your deck. Newer LED deck lights are energy efficient, long-lasting, and inexpensive:
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Capped LED post lights - Provide warmer downlighting
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Rope lighting - Runs under railings for accent lighting
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Solar lights - No wiring required for path lights
Place lights to avoid glare and shadows. Use dimmers to control brightness.
Hire a Licensed Electrician If Needed
Some complex wiring jobs like replacing your electrical service may require a professional electrician. Get quotes to see if the cost fits your budget. An electrician can also:
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Troubleshoot any existing problems
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Meet building codes for your area
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Obtain required permits
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Provide certified repairs and modifications
Even if hiring an electrician for parts of the job, you can save by doing simpler tasks like adding lights yourself.
Conclusion
With smart planning and budget-friendly solutions, you can enhance your deck's wiring for safety and convenience without overspending. Evaluate your needs, take it step-by-step, and don't be afraid to tackle basic improvements yourself. Done right, a well-wired deck will provide enjoyment for years to come.