DB board upgrades in Johannesburg North — what we actually find
On Johannesburg North properties we check the supply before the board. Many homes still run their original 1970s mains cable, undersized for the loads added since, and a bigger board in front of an undersized cable simply hides the constraint. Where the municipal feed is overhead, storm damage to the service connection presents exactly like an internal fault, so we confirm supply at the point of entry first.
Property stock in Johannesburg North
The established freehold suburbs of Johannesburg North sit on mature gardens with decades-old trees, and root intrusion into clay sewer lines is the single most common cause of the blockages we clear. Overhead municipal feeds are still common, so storm damage to a service connection presents exactly like an internal fault. Many homes still run the original 1970s mains cable, undersized for everything added since.
Mostly freehold with direct access. On larger stands we allow time to locate boundary stop-cocks and the point of entry before diagnosing.
Faults that cluster in Johannesburg North
- Root intrusion into original clay sewer lines under mature gardens
- Storm damage to overhead service connections mimicking an internal fault
- Original 1970s mains cable undersized for present-day loads
- Repeat blockages returning months after rodding because the pipe itself has failed
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 North 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 North — frequently asked questions
Other work we do in Johannesburg North
Need DB board upgrades in Johannesburg North?
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