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Key points

  • Council of Ministers Decision No. 425 (1431 AH) converted the voltage from 127/220 V to 230/400 V to reduce the risks of dual voltage.
  • SASO 2203 is the unified standard for household plugs and sockets (three rectangular pins).
  • The unified plug includes an earth pin, a 13 A fuse, and internal shutters covering the socket holes.
  • The nominal grid frequency in the Kingdom is 60 Hz.
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If you've lived in an older home in the Kingdom, you may have noticed two kinds of socket: an "American" socket at 127 V, and a three-pin socket at 220/230 V. That duality was a source of danger, which is why decisions were issued to unify it.

1) The voltage unification decision

The Saudi Standards, Metrology and Quality Organization (SASO) explains that Council of Ministers Decision No. 425 dated 20/9/1431 AH converted the voltage in the Kingdom from 127/220 V to 230/400 V, to reduce the risks resulting from dual voltage1.

  • 230 V: the voltage between phase and neutral, which feeds sockets and lighting at home.
  • 400 V: the voltage between two phases in a three-phase system, used for some large loads and buildings fed with three phases.

The frequency is 60 Hz, and the Saudi grid code sets its normal operating limits2.

2) The unified plug and socket standard

Standard SASO 2203 covers plugs and sockets for household and similar use at 220 V (converted to 230 V). According to SASO, a ministerial decision dated 23/2/2010 made the standards mandatory, and after a one-year transition period importing or manufacturing non-compliant plugs or sockets was banned1.

3) Safety features of the unified plug

SASO states the standard includes strict safety requirements, including1:

  • An earth pin for protection against electric shock.
  • A 13 A fuse inside the plug for overcurrent protection.
  • Internal shutters covering the live socket holes (child protection).
  • Fire and heat resistance, and prevention of contact with live parts.
  • Rectangular pins giving better contact.

The 230 V socket design also doesn't accept a 127 V plug, and vice versa, so the two can't be mixed up1.

4) What this means when you renovate

  1. Know your home's voltage first: older homes may have 127 V circuits. Conversion needs a qualified electrician and coordination with the utility; it isn't done by changing sockets alone.
  2. Don't use improvised adaptors and extensions to run appliances on a different voltage permanently.
  3. Buy compliant sockets and plugs carrying the conformity mark; cheap counterfeits lack the shutters and correct fuse.
  4. Check appliances: read the rating plate (voltage and frequency) before use, especially personally imported appliances.
  5. Wiring and board alterations are subject to protection requirements and the Saudi Electrical Code SBC 401.
Warning: electricity is dangerous. This content is for awareness; any work on wiring or boards must be done by a qualified, licensed electrician.

Sources

The number next to a statement points to its source in this list. Sources back the general information; anything marked “practical advice” is editorial experience, not a quoted source. Anything that affects safety, structural design or electrical installations needs a licensed professional, and in Saudi Arabia the binding reference is the Saudi Building Code.

  1. 1Unified plugs and sockets campaign — SASO 2203 and the move to 230/400 V — Saudi Standards, Metrology and Quality Organization (SASO)
  2. 2The Saudi Arabian Grid Code (nominal frequency 60 Hz and operating limits) — Saudi Electricity Regulatory Authority (SERA)
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This guide is for general information and planning, based on standards and technical guides. Standards are revised periodically; in Saudi Arabia the binding reference is the Saudi Building Code and the instructions of the competent authorities. For design and execution, use a licensed engineer or technician. Found an error? Tell us.