What an Electrical Safety Inspection Actually Checks

A real electrical safety inspection is a systematic walk through every part of the system that can start a fire or shock someone, done in a specific order, with the panel open and a meter in hand. It is not a visual sweep of the outlets. Done properly on an average South Florida house it takes a few hours, produces a written list of findings sorted by urgency, and tells you three things: what is unsafe now, what is aging toward a problem, and what simply does not meet the standard the house would be held to if the work were done today.

Below is the checklist we work through, in the order we work through it, with the reasoning behind each item. If you are buying a house, own an older one, are about to add a large load, or have had one too many strange symptoms, this is what you should expect somebody to actually look at.

What an Inspection Covers and What It Cannot

An electrical safety inspection is a condition assessment of accessible parts of the system. We open the panel, remove device plates, test circuits, check the service entrance, inspect the attic and any accessible crawl space, examine fixtures and exterior equipment, and verify protection where the standard calls for it.

What no inspection can do is see inside a finished wall. If a cable was damaged by a drywall screw in 1994 and has been slowly cooking since, nothing short of destructive investigation finds it directly. What we can do is find the symptoms that point at concealed problems: a circuit with elevated resistance, a device with heat damage, a breaker that trips under load, an arc fault device that will not stay set.

An inspection also is not a code enforcement action. Existing work installed correctly under an older code is generally allowed to remain. We separate findings into safety hazards, deferred maintenance, and items that fall short of current practice, because treating all three the same way is how homeowners end up ignoring the whole report.

The Service Entrance, From the Street Inward

We start outside because everything downstream depends on what happens here, and because problems at the service entrance are the ones utility crews and storms interact with.

On an overhead service we look at the weatherhead and whether the conductors form proper drip loops so water runs off rather than into the raceway. We check the mast for rust, for a loose or pulling attachment at the roof, and for adequate clearance of the drop over the yard, the driveway and any roof surface. We look at the condition of the service conductor insulation where it enters, because sun and salt air crack it and the failure point is almost always right at the head.

On an underground lateral we check the riser conduit and its condition at grade, where corrosion concentrates. At the meter we look for rust streaks, water staining inside the enclosure, a loose or damaged can, burned lugs, missing or broken seals, and evidence that the enclosure has ever been opened. In coastal Broward and north Miami-Dade, meter cans and service risers rust out at a pace inland homes never see, and a corroded meter base is a serious finding rather than a cosmetic one.

Inside the Main Panel

The dead front comes off. This is the single highest value part of the inspection and it is also the part a homeowner should never do themselves, because the service conductors and line side lugs remain energized with the main breaker off and there is no way to make them safe from the panel side.

Breakers and Conductors

We verify that every breaker is a type listed for that panel, because mixing brands is common and creates a connection the bus was never designed for. We look for double tapping, meaning two conductors under a terminal rated for one. We check that each breaker matches the wire it protects, since a 20 amp breaker on 14 gauge wire is one of the most frequent and most dangerous findings in an older house. We look for signs of heat: discolored bus stabs, darkened insulation, a smell, a breaker that is warm to a non-contact reading when its circuit is loaded.

We check torque on accessible lugs, particularly aluminum service conductors, where a loose termination generates heat and eventually fails. We look for missing knockout fillers and open slots, which let rodents and moisture in, and for the panel cover screws being the correct type rather than long sheet metal screws driven into conductors.

Neutrals, Grounds and the Subpanel Question

In the service panel, the neutrals and the equipment grounds bond together, and a main bonding jumper or bonding screw makes that connection. In every downstream subpanel, they must be separated: neutrals isolated on their own bar, grounds on a bonded bar, four conductors in the feeder, and the bonding screw removed.

Getting this wrong means normal neutral current flows on the grounding conductors and on anything metallic they touch, including water lines and appliance frames. It is quiet, it causes no obvious symptom, and it is present in a large share of the subpanels we open, usually installed by someone who treated a subpanel like a second main. We also look for more than one neutral under a single terminal, which is not permitted and produces intermittent faults when one is removed.

Panel Types That Change the Conversation

Some panels are findings in themselves. Federal Pacific Stab-Lok and Zinsco equipment have documented histories of breakers failing to trip on overload and of bus connection failures. When we open one, the inspection shifts from a list of items to a discussion about replacing the panelbecause there is limited value in correcting individual items inside equipment whose protective function cannot be relied on. Fused panels and split-bus panels without a single main disconnect fall into a similar category.

Grounding and Bonding

Grounding gets checked from three directions. First, the grounding electrode system: driven rods, a concrete encased electrode where one exists, and the conductor connecting them to the panel, including whether that conductor is intact, correctly sized and protected from damage where it runs down an exterior wall.

Second, bonding of the metal systems in the building: the metal water piping bonded near where it enters, gas piping bonded where required, and an intersystem bonding terminal for cable and communications grounds so those services do not clamp onto a water pipe or a rod of their own.

Third, equipment grounding at the branch circuit level. We test outlets for the presence and integrity of an equipment ground, and we look specifically for bootleg grounds, where someone jumped the neutral to the ground screw at a device to make a tester show a proper reading. That trick makes an ungrounded circuit look grounded and puts the appliance chassis at neutral potential, which is a genuine shock hazard, not a technicality.

Wiring Type, Age and Condition

South Florida housing stock spans several distinct wiring eras and we identify which ones are present in the house, since they age very differently.

• Rubber and cloth insulated conductors from the earliest era go brittle with heat and crumble when a device is pulled forward. Any circuit still running these is on borrowed time.
• Armored cable relies on its metal jacket for the ground path, which works only if the bonding strip is intact and the connectors are tight throughout.
• Early nonmetallic cable without a full size grounding conductor leaves two prong outlets throughout the house.
• Conduit in concrete block constructionwhich is how most masonry houses here were built, is durable, but conductors inside a slab or block wall can be damaged by water intrusion and are difficult to replace when a run is compromised.
• Modern nonmetallic cable is generally fine and the findings are about installation quality: staple damage, unsupported runs, missing box connectors, splices outside a box.

In the attic we look for junction boxes without covers, splices made in the open, cable draped over trusses without support, cable run through recessed can fixtures, and insulation piled against equipment that needs clearance. Attic heat in this climate accelerates every insulation problem, and an attic in August is where marginal wiring finally fails.

Aluminum Branch Circuit Wiring

Houses built here roughly between the mid 1960s and the mid 1970s frequently have solid aluminum conductors on 15 and 20 amp branch circuits. This is a specific and well documented hazard, and it is different from the aluminum used for service and feeder conductors, which is normal and fine when terminated correctly.

The problem is at the connections. Aluminum expands and contracts more than copper with heating cycles, it forms a resistive oxide layer, and it creeps under a screw terminal over time. Each of those effects loosens the joint, a loose joint heats, and heat accelerates all three. The result is a connection that gets worse every year until it arcs.

During the inspection we identify whether aluminum branch wiring is present by reading conductor markings at the panel and at devices, then we check terminations at receptacles, switches and fixtures for discoloration, for devices not rated for aluminum, and for previous repairs made with materials that are not approved for the purpose. The findings drive a specific remediation conversation rather than a general one.

Ground Fault Protection Coverage

We map where ground fault protection exists and where the current standard would place it: bathrooms, kitchen counters and the wider kitchen area, garages, outdoors, laundry areas, crawl spaces, anything within six feet of a sink, and the entire pool and spa zone.

Then we test rather than assume. Every ground fault device gets tested with an external load, not only with its own button, because an older device can pass its self test and still fail to open on a real fault. We verify line and load orientation, since a device wired backward protects nothing while appearing to function. We trace which downstream outlets are fed from each device and confirm the required labeling is present.

In coastal homes we pay particular attention to exterior devices, since salt air degrades the internal electronics and the contacts. A ten year old outdoor device two blocks from the water is one we expect to find failing.

Arc Fault Protection

Arc fault protection addresses a different failure than ground fault protection. It looks for the electrical signature of arcing: a loose terminal, a nicked conductor, a cord pinched under furniture, a staple driven too tight. Those faults produce enough heat to ignite building materials while drawing far too little current to trip an ordinary breaker.

Current construction requires arc fault protection on branch circuits serving most habitable areas. Older homes are not required to retrofit it, but for a house with aging wiring or with a history of unexplained flickering, adding it is one of the higher value upgrades available, because it addresses precisely the failure mode that older terminations produce. During the inspection we note which circuits have it, which circuits would be candidates, and whether the panel accepts the necessary devices.

Outlets, Switches and Devices

Device by device, with plates removed on a meaningful sample and every device tested, we look for:

• Reverse polarity, where hot and neutral are swapped at the device
• Open grounds and bootleg grounds
• Backstabbed connections, where the conductor is pushed into a hole in the back of the device rather than wrapped under a screw, which is the most common source of intermittent outlets in tract housing
• Loose contact tension, where a plug falls out under its own weight, a condition that arcs every time the plug moves
• Scorching, melted faces, or the sharp smell of an overheated device
• Overfilled boxes, where conductor count exceeds what the box volume allows
• Missing or broken cover plates, and boxes not flush at a combustible wall surface
• Painted-over devices and devices with paint sealing the ground path
• Two prong outlets, and any three prong outlet installed on an ungrounded circuit without the required labeling

Fixtures, Fans and Lighting Control

Fixtures get checked for correct box support, because a ceiling fan on a box not rated for a fan is a falling hazard rather than an electrical one. We look at recessed fixtures for insulation contact ratings, at exterior fixtures for wet location listing, and at any fixture whose lamp wattage exceeds what the housing is rated for, which shows up as darkened sockets and brittle wire insulation at the fixture.

We check switch loops for the presence of a neutral where smart controls might be added later, and we look at dimmers driving LED loads, since mismatched combinations produce flicker that people interpret as a wiring fault. We also verify that closet lighting maintains the required clearance from storage areas.

Exterior, Wet Zones and Salt Air

Outside we check that every exterior receptacle has a weather resistant device and an in-use cover that seals with a cord plugged in, that outdoor boxes are not filling with water, and that landscape lighting transformers and low voltage runs are intact and correctly protected.

At the air conditioning equipment we look at the disconnect, the whip, the condition of the conductors where they enter the unit, and whether the disconnect is within sight of the equipment. Corroded condenser disconnects are one of the most common exterior findings we write up along the coast.

If the property has a pool or spa, we check for ground fault protection on the pump, the light and the receptacles in the zone, and we test the continuity of the equipotential bonding between the ladder, the handrail, the light niche, the pump housing and the water. A missing bonding connection produces no symptom at all until someone feels it in the water, which makes it exactly the kind of item an inspection exists to catch. Property managers can find how we handle multi-unit and common area inspections on our property management page.

Large Loads, Generators and Storm Readiness

Air conditioning dominates residential load in this climate, so we look at whether the service and the panel are sized for the equipment actually installed, and whether anyone has added a second system, a pool heater, an EV charger or a tankless water heater without a load calculation.

This matters more than people expect. A house that was adequate in 1978 with one air conditioner and a gas range can be running near its limit today with a heat pump, an induction range and a car charging every night. The inspection captures the connected load and the calculated demand so that the next addition is a planned decision rather than a discovery made when the main breaker starts tripping in August. If a charger is in your plans, our EV charging page covers what the circuit itself involves.

For generators we check the connection method. A permanently installed generator needs a transfer switch. A portable generator needs either a transfer switch or a properly installed interlock kit with an inlet, and never a cord with male ends on both sides, which energizes the service conductors and can kill a utility worker. We also look at surge protection at the panel, which matters here given how routinely lightning finds our neighborhoods during the summer.

Smoke Alarms, the Report, and When to Schedule One

Life safety devices close out the inspection. We check smoke alarm placement inside and outside sleeping areas and on every level, whether the alarms are interconnected so one triggers all, their age, and whether combination carbon monoxide detection is present where an attached garage or a fuel burning appliance calls for it.

The finished product should be a written report that separates immediate hazards from items to plan for, identifies what each finding actually risks, and gives you enough detail that any qualified electrician could act on it. A report that reads as a sales pitch with no reasoning attached is not useful to you. Ours explains what was found, why it matters, and what correcting it involves.

The inspections most worth scheduling are before you buy an older house, before adding a large load like an EV charger or a second air conditioning system, after a flood or a lightning event, when a house has had multiple owners doing their own work, when insurance asks for a four point evaluation, and whenever a home built in the aluminum branch wiring era has never been assessed. You can learn more about how we workcheck coverage on our service area pageor start with a phone call. Reach us at (954) 602-0050 and describe what you have and what prompted the question. If something you have already noticed sounds urgent, say so when you call (954) 602-0050 and we will treat it that way.