Professional EV Charger Installation for Landed Homes in Malaysia
A Step-by-Step Guide to Safe and Compliant EV Charger Installation for Landed Homes in Malaysia.
Installing an EV charger at a landed home in Malaysia involves more than just choosing a charger and mounting it on a wall. A proper installation depends on your home’s electrical capacity, your EV’s charging capability, and compliance with Malaysian electrical safety regulations.
This guide explains the full installation process step by step, so you know what is required, what affects charging speed, and how to avoid common (and costly) mistakes.
Quick Overview of the Installation Process
Confirm your EV model and charging capability
1
Decide on charger power (7kW or 22kW)
2
Check your home’s electrical supply and DB capacity
3
Plan a dedicated EV charging circuit
4
Install an EV distribution box with proper protection
5
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Run new cabling from DB to charger
6
Install and commission the charger
7
Configure charging limits and perform final safety checks
8
1. Confirming Your EV Model Comes First (Very Important)
Before recommending 7kW or 22kW, we will first ask for your EV model. This is because charging speed is limited by the vehicle’s onboard AC charging capacity, not just the charger installed on the wall. Many people assume that installing a higher-capacity charger will automatically charge faster. In reality: The car, not the charger, determines the maximum AC charging speed.
Common real-world scenarios
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Many full EVs charge up to 11kW AC
-
Some newer models support up to around 15kW AC
-
Most plug-in hybrids (PHEVs) charge at much lower AC power
-
Some EVs (including certain BYD models) are single-phase only
In these cases, installing a 22kW charger will not speed up charging, because the vehicle cannot draw more power than it is designed to accept.
How charger recommendation is confirmed
To avoid unnecessary cost, we assess:
-
your EV model and its onboard AC charging capacity
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whether the vehicle supports single-phase or three-phase charging
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your home’s electrical supply and available capacity
Only after this do we recommend whether 7kW or 22kW makes sense.
2) Choosing the Right Charger Power (7kW vs 22kW)
Why 22kW is recommended when feasible
-
Allows faster charging for EVs that support higher AC input
-
Reduces charging time for daily use
-
Future-proofs your setup if future EVs support higher AC charging
-
Avoids replacing the charger later when changing cars
Important limitation in Malaysia
Many Malaysian landed homes only have single-phase supply, which limits charging power.
If your home is single-phase or has limited electrical capacity, a 7kW charger is often the safest and most practical option.
Key point:
The best charger is the one that matches both your EV and your home, not the one with the highest number.
For landed homes in Malaysia, we generally recommend installing a 22kW EV charger if both the vehicle and the home’s electrical system can support it.
3) Dedicated Circuit for EV Charging (Safety Requirement)
1
EV charging must always be installed on a dedicated electrical circuit.
We do not:
-
use existing wall sockets
-
share air-conditioner circuits
-
share general power circuits
2
A dedicated circuit ensures:
-
stable charging current
-
correct protection against overload and earth leakage
-
reduced fire risk
-
easy isolation for maintenance
This is a core requirement for safe EV charger installations.
4) Electrical Assessment for Landed Homes
Before installation, a licensed installer will assess:
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single-phase or three-phase supply
-
available current capacity at the main DB
-
DB condition and spare ways
-
earthing quality
-
distance from DB to charger location
This assessment determines:
-
whether 22kW charging is feasible
-
correct breaker and protection sizing
-
cable size and routing
Skipping this step is one of the most common safety mistakes.
5) What’s Included in a Typical Single-Phase EV Charger Installation (< 15m)
Below is a typical installation scope for single-phase landed homes in Malaysia.
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EV Distribution Box (installed next to home DB)
Includes:
-
2-Pole MCB 40A
-
2-Pole RCCB 40A Type A (30mA)
-
Cable termination at the main DB
Note:
Protection is provided via an RCCB in a dedicated EV distribution box (not RCBO).
Cabling from EV Distribution Box to EV Charger
Includes:
-
2 × 6mm² PVC/CU cables + PE
-
TPN isolator near the charger
-
Proper conduit or trunking for cable protection
Cable sizing depends on:
-
charging load
-
cable length
voltage drop requirements
Testing & Commissioning
Includes:
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continuity and insulation checks
-
earth leakage protection testing
-
charging start/stop verification
-
confirmation of safe operating current
The charger is only handed over after successful commissioning.
6) Installation by a Licensed Electrical Contractor (Malaysia)
A good charger should always be reliable
Certified & Licensed Installers
EV charger installation must be carried out by:
-
a company approved by Suruhanjaya Tenaga (Energy Commission of Malaysia)
-
qualified technicians authorised for fixed electrical installations
Why Compliance Matters
This ensures:
-
compliance with Malaysian electrical regulations
-
proper safety standards
-
protection for homeowners during inspections or faults
Pro-Safety vs. DIY Risks
Avoid installers who treat EV chargers like normal wall sockets or bypass DB protection.
7) Post-Installation Setup & Daily Use
After installation:
-
charging current can be configured based on home capacity
-
charging schedules can be set to manage household load
-
users should periodically check for abnormal heat or tripping
A properly installed system should charge reliably without affecting normal household usage.
Frequently Asked Questions
(Malaysia – Landed Homes)
Is professional installation really necessary?
Yes. Fixed EV chargers involve DB work, protection devices, and continuous high current. Professional installation is strongly recommended.
Will a 7kW charger be enough for most users?
For most daily driving with overnight charging, yes. The correct choice depends on:
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your EV model
-
onboard charging capacity
-
daily usage
-
home electrical capacity
How long does installation take?
Most landed home installations can be completed within a day, assuming no major DB upgrades are required.
Can I use a normal 3-pin plug to charge my EV at home?
No.
A standard 3-pin plug does not have sufficient capacity for regular EV charging.
EV charging requires:
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a dedicated circuit
-
new cabling from the main DB
-
proper protection devices
Using a 3-pin plug for long-term EV charging can cause overheating and is unsafe.
Can I tap power directly from the electricity meter outside my house?
No — this is strongly not recommended.
Direct tapping from the meter is not approved by Tenaga Nasional (TNB) for EV charging installations.
Proper installation must:
-
connect after the main DB
-
include a dedicated circuit
-
use approved protection devices
-
be installed by a licensed electrical contractor
Meter tapping bypasses required protection and is unlikely to be approved.
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