02 — Signs
Warning Signs and What We Check in Portsmouth Homes
03 — Cable Markings
Reading the Cable Jacket
CPSC explains that virtually all aluminum branch wiring went in as plastic-sheathed NM cable that looks like copper cable from the outside. In an unfinished attic, basement, or garage, the printed or embossed jacket carries the answer, and a flashlight held at a low angle helps. Aluminum cable is marked “Al” or “Aluminum” every few feet.
Read as much of the marking as you can. A cable marked “CU-clad” or “Copper-clad” along with “Al” uses copper-coated aluminum, which the repair recommendations do not cover, and neither do the larger aluminum conductors for service entrance cables, dryers, and ranges. If the marking cannot be read, a qualified electrician makes the determination.
The era explains the pattern. A copper shortage in the mid-1960s pushed builders to use aluminum on general 15- and 20-amp circuits, where it had mostly been limited to a few large circuits such as dryers and ranges.
04 — Connectors
Connector Repairs, and Where a Twist-On Sits
CPSC’s first choice is a COPALUM connector, a metal sleeve crimped onto the aluminum and copper wires with a dedicated power tool and die, making what amounts to a cold weld. The agency considers that pigtail a safe and permanent repair, and only electricians trained by the manufacturer are authorized to install it.
Where COPALUM is not available, the AlumiConn setscrew connector is named the next best alternative for a permanent repair. It performed well in initial tests but has a shorter track record, and the work belongs to a qualified electrician.
Twist-on connectors sit in a third group. A twist-on marked for aluminum and copper intermixed in dry locations is a listed device, and Virginia’s Section E3406.8 allows the two metals to meet inside a connector listed for that purpose and those conditions. CPSC treats an AL/CU twist-on pigtail as an emergency or temporary repair.
We put the method and its listing in writing, so the choice between a temporary fix and a permanent one stays yours.
05 — Every Connection
Every Connection Reaches Past the Outlets
CPSC says the repair should include every connection or splice involving aluminum wire in the home: outlets, dimmers, switches, fixtures, appliances, junction boxes, and panel boxes. Appliances wired directly to No. 12 or No. 10 aluminum branch circuits also need repair, and the examples include dishwashers, cooling equipment, heaters, air conditioners, and light fixtures.
In a 1960s or 1970s Portsmouth house, that list can mean a built-in dishwasher, a wall heater, a hardwired air conditioner, ceiling fixtures, and splices in attic junction boxes. CO/ALR devices are not made for every one of those locations, such as permanently wired appliances and ceiling fixtures, which is one reason they count as an incomplete repair.
Deterioration at aluminum connections is cumulative, and the COPALUM repair has been shown to be practical in an occupied and furnished home. A written whole-house scope lists these locations room by room so none is missed.
06 — Permit Line
Repair or New Wiring: Where Portsmouth’s Permit Line Falls
Portsmouth’s permit guide lists work that needs an electrical permit, including adding new circuits and installing, replacing, or extending electrical wiring. The same guide lists ordinary repairs and like-for-like replacement of residential electrical fixtures and appliances among work that needs no permit, while still requiring the work to meet code.
On an aluminum-wired house, making a failed connection safe on the visit is repair work, and replacing aluminum runs with copper is wiring replacement, which the city lists as permit work. The guide does not address whole-house pigtailing either way, so we will confirm with the city whether a permit is required before scheduling that work.
07 — Process
Our Troubleshooting Steps for a Portsmouth Home
First phone call
We ask what you are seeing, when the house was built, and whether any rooms were added later.
Find the circuit and open the boxes
We identify the breaker, then inspect each outlet, switch, and splice on it for wire type, heat damage, and loose terminals.
Make failed connections safe
Failed connections are made safe on the visit, and if more of the house is aluminum, you get a written scope for connector repair or copper replacement.
08 — Why Castles
What We Check on Aluminum-Era Homes
Connections Checked by Heat
Thermal imaging finds the warm termination.
Whole-House Scope Written
Every aluminum connection listed by room.
09 — Proof
Repair Calls Described in Google Reviews
A Google review mentions an urgent electrical repair that was handled after the call.
From our five-star Google reviews
Google 5.0 Rated by Hampton Roads Customers
Castles Electrical maintains a 5.0 rating on Google. The reviews below load as a live widget, so this page shows current feedback from real Castles Electrical customers.
10 — FAQS
