Why
Your Outlets Keep Tripping (And When It’s More Than an
Inconvenience)
A breaker that trips once in a while is annoying. A breaker that
trips every time you use the kettle is a warning sign. If you’ve found
yourself walking to the DB board more often than you’d like, resetting
the same switch over and over, it’s worth understanding why — because a
tripping breaker is your home’s electrical system telling you something
isn’t right.
In this post, we’ll break down the most common reasons breakers trip,
why simply resetting it isn’t a real fix, and what a proper diagnosis
and repair actually looks like. This is especially relevant here in
Johannesburg, where load shedding puts extra strain on home electrics
that many of us don’t think about until something goes wrong.
Why This Is
Such a Common Complaint in Johannesburg
South African homes deal with a unique combination of stressors on
their electrical systems. Frequent power cuts and restorations create
voltage spikes and surges that older wiring wasn’t necessarily designed
to handle repeatedly. Add to that ageing housing stock — plenty of
Johannesburg homes have electrical installations that predate current
safety standards and appliance loads — and you get a much higher rate of
nuisance tripping, intermittent faults, and genuine safety concerns than
in newer, more resilient systems.
It’s also worth understanding, briefly, what a breaker actually does.
Circuit breakers and earth leakage relays are safety devices, not faults
in themselves. When they trip, they’re doing exactly what they’re
designed to do: cutting power before something more dangerous happens,
like overheating wiring or an electric shock. A tripping breaker isn’t
the problem — it’s the messenger.
The Usual Suspects
1. Circuit overload
This is the most common cause. Too many high-draw appliances —
kettles, heaters, microwaves — sharing one circuit pulls more current
than the breaker is rated for, so it trips to protect the wiring. This
is especially common in older homes where kitchens and laundry areas
were wired decades ago, long before the average household owned this
many power-hungry appliances. If your breaker trips reliably whenever
two specific appliances run at the same time, overload is almost always
the cause.
2. A short circuit
When a live wire touches a neutral or earth wire, current takes a
shortcut it shouldn’t. This trips the breaker almost instantly and often
points to damaged insulation or faulty wiring inside a wall or
appliance. Short circuits tend to trip a breaker the moment you switch
something on, rather than gradually building up like an overload. They
can be caused by rodent damage to cabling, deteriorated insulation on
old wiring, or a fault inside a specific appliance.
3. Ground faults
Similar to a short, but the live wire is contacting an earthed
surface — common in damp areas like bathrooms, kitchens, or outdoor
plugs. This is exactly what your earth leakage relay is designed to
catch. If it’s your earth leakage relay tripping (rather than a standard
circuit breaker), that’s a strong indicator of a ground fault somewhere
in the system, and it’s not something to ignore, since it directly
relates to shock protection.
4. A faulty appliance
Sometimes it’s not your wiring at all — it’s the toaster. A damaged
appliance cord or internal fault can trip a breaker every time it’s
switched on. The easiest way to test this is to unplug everything on the
affected circuit, reset the breaker, and plug items back in one at a
time until you find the culprit. If a specific appliance trips the
breaker on its own, it needs repair or replacement — not a
workaround.
5. Load shedding stress on
old wiring
Repeated power cuts and surges when electricity returns put real
strain on ageing circuits and connections, especially in homes with
wiring from before modern safety standards. Every time power is restored
after an outage, there’s a brief surge as the grid stabilises and
appliances draw power simultaneously. Over months and years of repeated
load shedding cycles, this repeated stress can loosen connections,
degrade insulation faster than normal wear, and increase the likelihood
of nuisance tripping — even in a system that was previously fine.
6. DB board issues
Sometimes the problem isn’t the circuit at all, but the distribution
board itself — a worn breaker that’s become overly sensitive, corroded
connections inside the board, or an outdated board that simply isn’t
rated for your household’s current electrical demand. This is more
common in older properties that have had appliances and circuits added
over the years without the DB board being upgraded to match.
Why Flipping the
Breaker Back On Isn’t a Fix
If a breaker keeps tripping and you just keep resetting it, you’re
not solving anything — you’re ignoring a signal that something is
drawing too much current or leaking current somewhere it shouldn’t. Left
unchecked, this can damage appliances, degrade wiring insulation, or
become a fire risk.
It’s worth being direct about this: electrical faults are one of the
more common causes of house fires, and repeated tripping is very often
an early warning sign rather than a random inconvenience. A breaker that
trips occasionally under heavy load might just need circuit
redistribution. A breaker that trips unpredictably, trips instantly, or
is joined by other symptoms — flickering lights, warm outlets, a burning
smell — needs proper investigation, not another reset.
Warning Signs That
Shouldn’t Be Ignored
Beyond a tripping breaker itself, there are several related signs
that point to a genuine electrical issue rather than a minor
nuisance:
- Lights that flicker or dim when an appliance switches on
- Outlets or switch plates that feel warm to the touch
- A faint burning smell near an outlet, switch, or the DB board
- Visible scorch marks around a plug point or switch
- Buzzing or crackling sounds from outlets or the DB board
- Sparks when plugging in or unplugging an appliance
- A breaker that trips immediately upon reset, with nothing plugged
in
Any of these — even on their own — is worth having looked at promptly
rather than waiting to see if it happens again.
How We Actually Fix It
When Supa Nove comes out for a tripping breaker, we take a systematic
approach rather than guessing:
- Identify which circuit is tripping and map out
exactly what’s connected to it, since this alone often narrows down the
likely cause significantly. - Test for overload versus short circuit versus ground
fault, using proper testing equipment rather than trial and
error, so the diagnosis is accurate the first time. - Inspect wiring and connections for damage, wear, or
rodent activity, particularly in older homes or areas with known pest
issues. - Check your earth leakage relay and DB board are
functioning correctly and rated appropriately for your household’s
current electrical load. - Recommend circuit redistribution if you’re
consistently overloading one line, so high-draw appliances aren’t all
fighting for the same circuit. - Test individual appliances where a faulty appliance
is suspected, so you’re not left guessing which one to replace.
Where we find an issue that goes beyond a simple fix — an undersized
DB board, wiring that no longer meets current safety standards, or a
system that’s simply aged out — we’ll walk you through the options
honestly, including what’s urgent and what can be planned for over
time.
When to Call Us Before It
Gets Worse
- A breaker trips more than occasionally, or trips immediately on
reset - You smell burning or see scorch marks near an outlet or the DB
board - Lights flicker or dim when an appliance switches on
- An outlet feels warm to the touch
- Sparks when plugging something in
- Your earth leakage relay trips specifically (rather than a standard
breaker) - The tripping started or worsened noticeably after a load shedding
stage change
A Few Things You Can
Check Yourself First
Before calling anyone out, there are a couple of basic checks that
can help narrow things down and save time:
- Note exactly what was running when it tripped. This
is the single most useful piece of information for diagnosing overload
versus a fault. - Try isolating appliances. With the breaker reset
and nothing plugged in on that circuit, plug items back in one at a time
to see if a specific appliance is the trigger. - Check if it’s a specific circuit or the whole
board. If only one circuit is affected, that narrows the
problem considerably compared to widespread tripping.
Please note: if a breaker won’t reset at all, keeps tripping
instantly, or you notice any burning smell, don’t keep testing it
yourself — that’s the point to call a professional immediately rather
than continuing to experiment.
Final Thoughts
Electrical faults don’t fix themselves, and small warning signs now
are much cheaper — and safer — to deal with than a burnt-out circuit or
a more serious incident later. A tripping breaker is doing its job by
protecting you, but it’s also telling you that something needs
attention. If your breaker’s got a temper, or you’re noticing any of the
warning signs above, give Supa Nove Electrical Power & Plumbing a
call and we’ll get it properly diagnosed and sorted.
Supa Nove Electrical Power & Plumbing — proudly serving
Johannesburg homes and businesses.
Written by Irwin Hackner