DB board upgrades in Johannesburg — what we actually find
An older Johannesburg board sits at the end of three or four generations of wiring installed by different hands, and no legend describes it accurately. We trace and label before touching anything, because assuming a circuit is dead here is how people get hurt. Pre-1975 installations commonly have no earth-leakage protection whatsoever and cannot be certified as they stand, whatever else is done to the board.
Property stock in Johannesburg
Central Johannesburg's older housing stock still runs a great deal of lead-jointed cast-iron drainage, and the joints fail long before the pipe does. Municipal pressure across the inner suburbs swings hard overnight, which is what finally splits an already-tired connection. Electrically, these properties frequently carry three or four generations of wiring in the same ceiling, added by different hands over decades.
Access is generally direct, but on older subdivided properties we confirm which meter and which board actually serve the unit before starting.
Faults that cluster in Johannesburg
- Lead-jointed cast-iron drainage failing at the joints rather than along the pipe
- Overnight municipal pressure swings splitting tired connections
- Three or four generations of wiring sharing one ceiling with no reliable labelling
- Pre-1975 installations with no earth-leakage protection at all
How DB board upgrades works
A distribution board needs upgrading if it is more than about twenty-five years old, still uses re-wireable fuses, has no earth leakage protection, or predates current SANS 10142 layout requirements. It is also effectively a prerequisite for solar, an EV charger or any significant renovation, because the new work has to be certified and an old board will not support it. A board that buzzes or smells hot is not a scheduling matter — that is how board fires start.
- Full board replacement to current SANS 10142 requirements
- Earth leakage protection where none is fitted, and correct circuit separation
- Surge arrester installation, which matters on the Highveld more than most places
- Load surveys before adding solar, an EV charger or renovation circuits
- Electrical COC issued in the registered person's own name on completion
Our process on a Johannesburg call-out
- 1Inspect the existing board, its protection devices and the circuit layout
- 2Measure actual load per circuit rather than assuming the original design still fits
- 3Quote the board, protection, surge arrester and certification as itemised work
- 4Replace and re-terminate, torque-checking every connection
- 5Test each circuit and issue the Electrical COC
DB board upgrades in Johannesburg — frequently asked questions
Other work we do in Johannesburg
Need DB board upgrades in Johannesburg?
Owner-managed by Garth Blair. We pick up the phone and book you in personally.
Speak to Garth directly.
Owner-managed means you reach the person who's accountable. Phone, email or WhatsApp — whatever's easiest for you.
- Call now082 886 9119
- WhatsApp082 886 9119
- Emailgarth@appleplumbing.co.za
- Service areaSandton, Midrand & Northern JHB
- HoursMonday to Saturday, 07:00 – 17:00