Choosing the Right LED Bulb Base: E14, E27, GU10 Explained

Choosing the Right LED Bulb Base: E14, E27, GU10 Explained

Picking an LED bulb isn’t only about brightness and colour temperature — the base type must match your fitting. In New Zealand, the most common bases are E14, E27, and GU10. Use this quick guide to identify yours and shop the right replacement with confidence.

What do E14, E27, and GU10 mean?

  • E = Edison screw. The number is the base diameter in millimetres (e.g., E14 = 14mm, E27 = 27mm).
  • GU10 = Two short pins that twist-and-lock into place (common in spotlights).

E14 LED Bulbs – Small Edison Screw (14mm)

Where they’re used: Chandeliers, bedside lamps, wall sconces, and decorative fittings. Often called “candle” bulbs due to their slim shape.

Why choose E14: Compact size, elegant look, efficient light output — perfect for decorative fixtures that need a narrower bulb.

Shop E14 LED Candle Bulb (6W)

E27 LED Bulbs – Standard Edison Screw (27mm)

Where they’re used: Ceiling pendants, table/floor lamps, and most general household fittings that take a screw bulb.

Why choose E27: The go-to size for everyday lighting in NZ. Swap old incandescent bulbs for efficient LEDs to reduce power use while keeping the same brightness.

GU10 LED Bulbs – Twist & Lock Spotlight Base

Where they’re used: Spotlights, track lighting, and some recessed fittings — especially in kitchens, hallways, and living areas.

Why choose GU10: Directional, focused light that’s great for task areas or highlighting artwork. Modern GU10 LEDs give strong brightness with far less energy than halogen.

Shop GU10 LED Bulb – Super Bright

How to identify your bulb base (2-minute check)

  1. Remove the old bulb and look at the base.
  2. If it screws in, measure the diameter across the threads: ~14mm (E14) or ~27mm (E27).
  3. If it has two short pins that twist to lock, it’s GU10.
  4. Match the base type when ordering your LED replacement.

Beyond the base: choosing the right LED

  • Brightness (lumens): Match lumens to the light level you want (e.g., ~800 lm ≈ old 60W incandescent).
  • Colour temperature: 3000K warm white for cosy areas; 4000–5000K for task/working zones.
  • Dimming: If you use dimmers, pick a dimmable LED and a compatible dimmer for smooth control.
  • Certification: Choose SAA-compliant LEDs designed for NZ.

Shop popular LED categories

FAQs

Can I swap halogen GU10 for LED GU10 directly?
In many cases yes, but ensure the fitting is suitable and use an LED-rated dimmer if dimming. If unsure, consult a licensed electrician.

My fitting says “B22 bayonet” — what should I buy?
B22 is a push-and-twist bayonet base (not screw). If you need bayonet, choose our 11W LED Bulb – B22.

Do LEDs come in warm and cool colours?
Yes. Most home users prefer warm white ~3000K for living areas, and neutral to cool (4000–5000K) for kitchens and workspaces.

Ready to upgrade? Find the right base and get long-lasting, energy-saving light with our LED bulbs NZ collection.

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