HDB apartment blocks completed on or after 01 Jan 1994 and flats upgraded under the Main Upgrading Programme (MUP) are provided with a higher electrical loading of 40 amps main switch. Flat owners do not need to apply for an HDB permit to install an air-conditioner or other higher capacity equipment/appliances if the flat is provided with higher electrical loading.

To find out if your block has been provided with higher electrical loading, you can check the electrical loading online. Alternatively, you can call our toll-free Branch Office Service Line on 1800-2255432.

You may also wish to view the Terms and Conditions regarding electrical work in HDB flats.



Flats that have not been provided with higher electrical loading, require an HDB permit to install new 15 Amps power points for air-conditioners or other higher capacity equipment/appliances.

Types of Electrical Work	Subject to the following Guidelines/ Conditions
New 15 amps power point/20 amps isolator Note Appliance with electrical rating exceeding 15amps power is not allowed. 20amps isolator is only allowed for air conditioner installation	Flats provided with 30 amps main switch Embedding of wiring (house in metal/high impact PVC conduit) in RC slab, beam, column, wall and in wall plaster or other finishes is not allowed Submit the SP Services Ltd (SPSL) Form CS/5H endorsed by HDB to SPSL for testing of the new wiring

The tables below show the types of electrical work that do not require a permit.

Types of Electrical Work	Subject to the following Guidelines/ Conditions
New 15 amps power point/20 amps isolator Note Appliance with electrical rating exceeding 15amps power is not allowed. 20amps isolator is only allowed for air conditioner installation	Flats provided with higher electrical loading (40 amps main switch) and flat upgraded under Main Upgrading Programme (MUP) Embedding of wiring (house in metal/high impact PVC conduit) in RC slab, beam, column, wall and in wall plaster or other finishes is not allowed Submit the SP Services Ltd (SPSL) Form CS/5H endorsed by HDB to SPSL for testing of the new wiring
Additional lighting points/fan points/13 amps power points or extension of wiring/rewiring	Embedding of wiring (house in metal/high impact PVC conduit) in RC slab, beam, column, wall and in wall plaster or other finishes is not allowed Submit the SP Services Ltd (SPSL) Form CS/5H endorsed by HDB to SPSL for testing of the new wiring
Covering of wiring with PVC trunking
Encasement of surface wiring in metal/high impact PVC conduit
Alteration/addition of ELCB, MCB, socket outlet, main switch etc.
Installation of alarm system, door bell, clock and exhaust fan
Installation of ceiling fan	Weight of fan should not exceed 6 kg Clear height from finished floor level to fan blades should be at least 2.4 m Hardened steel expanding bolt should not exceed 8 mm in diameter and penetration depth of steel plug should not exceed 40 mm

Types of Building Work

Subject to the following Guidelines/ Conditions

Alteration/extension of existing TV points

The original TV points provided are not to be tampered with and must be accessible for future maintenance Any alteration and extension of the original TV points are to be carried out by a licensed StarHub Cable Vision (SCV) installer SCV may refuse to connect the unit's altered/modified TV points to their network if the work was carried out by an unlicensed installer For enquiries, please call SCV hotline on 6873-2828

Types of Building Work	Subject to the following Guidelines/ Conditions
Installation of instantaneous water heater	No restriction on the number of water heater For prefabricated flats, diameter and penetration depth of power-driven nails/screws should not exceed 6 mm and 40 mm respectively Submit the SP Services Ltd (SPSL) Form CS/5H endorsed by HDB to SPSL for testing of the new wiring For flats provided with 30 amps main switch Consumption of appliance should not exceed 3 kw for instantaneous water heater and 1.5 kw for storage type water heater For flats provided with higher electrical loading (40 amps main switch) and flats upgraded under Main Upgrading Programme (MUP) No control on running current of electrical appliances
Installation of storage water heater

Types of Building Work	Subject to the following Guidelines/ Conditions
Installation of washing machine without heater	No restriction on the number of washing machine Submit the SP Services Ltd (SPSL) Form CS/5H endorsed by HDB to SPSL for testing of the new wiring For flats provided with 30 amps main switch Consumption of appliance should not exceed 3 kw for washing machine with heater For flats provided with higher electrical loading (40 amps main switch) and flats upgraded under Main Upgrading Programme (MUP) No control on running current of electrical appliances
Installation of washing machine (with heater) not exceeding 3 kw

Types of Building Work	Subject to the following Guidelines/ Conditions
Installation of electric oven and cooker unit (such as induction plate cooker, etc)	No restriction on the number of electric oven and cooker unit Submit the SP Services Ltd (SPSL) Form CS/5H endorsed by HDB to SPSL for testing of the new wiring For flats provided with 30 amps main switch Consumption of electrical appliances should not exceed 3kw for electric oven and cooker unit For flats provided with higher electrical loading (40 Amps main switch) and flats upgraded under Main Upgrading Programme (MUP) No control on running current of electrical appliances
Installation of gas oven	Not applicable.

Last Updated on 12 Mar 2010