Expandable Heat Pump Consumer Unit with Spare Ways – WME14/SPH
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £80+
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The WME14/SPH is a 14-way expandable heat pump consumer unit built for domestic installations where additional low-carbon technologies are planned. It provides dedicated protection for a heat pump while leaving eight spare usable ways for future circuits such as EV charging, solar PV, or battery storage. Supplied factory-assembled with a...
The WME14/SPH is a 14-way expandable heat pump consumer unit built for domestic installations where additional low-carbon technologies are planned. It provides dedicated protection for a heat pump while leaving eight spare usable ways for future circuits such as EV charging, solar PV, or battery storage.
Supplied factory-assembled with a 100A main switch, Type 2 SPD, and Type B RCD, this unit delivers compliant protection for inverter-driven heat pumps while reducing on-site wiring time. The increased spare capacity makes it ideal for larger homes or staged upgrade projects.
Installer note: Ideal where a heat pump is installed now, with EV charging and solar PV planned as part of a phased upgrade.
- Expandable heat pump consumer unit with spare usable ways
- Factory-fitted 100A main switch
- Integrated Type 2 surge protection device (SPD)
- Type B RCD for inverter-driven heat pump protection
- 8 spare usable ways for future circuits
- 14-way metal enclosure
- 18th Edition Amendment 2 compliant
Designed for Multi-Technology Installations
The WME14/SPH is well suited to properties adopting multiple low-carbon technologies over time. Spare ways allow additional circuits to be added later without replacing the consumer unit, helping installers future-proof the installation.
This board offers a strong balance between compact sizing and expansion capacity, making it a popular choice for medium-to-large domestic properties.
Related Expandable Consumer Units
| Product | Usable Ways | Best For |
|---|---|---|
| WME10/SOL1 | Solar-only | Dedicated domestic solar PV installations |
| WME10/SPH | 4 spare ways | Compact future-ready installs |
| WME12/SPH | 6 spare ways | Heat pump + single future upgrade |
| WME14/SPH | 8 spare ways | Medium-to-large domestic systems |
| WME16/SPH | 10 spare ways | Larger homes or multi-tech installs |
| WME18/SPH | 12 spare ways | High-capacity domestic installs |
| WME22/SPH | 16 spare ways | Maximum expansion & future-proofing |
Who should choose a 14-way expandable board?
This board is ideal for medium-to-large homes where multiple low-carbon technologies may be added over time.
Why is a Type B RCD included?
Heat pumps use inverter-driven compressors that can produce smooth DC leakage, requiring Type B protection.
Can additional circuits be added later?
Yes. Spare usable ways allow future circuits such as EV chargers or solar PV to be added without replacing the consumer unit.
Is the unit supplied pre-wired?
Yes. The unit is factory-assembled to reduce installation time and minimise wiring errors.
- Product Type: Expandable Heat Pump Consumer Unit
- Main Switch: 100A
- RCD: Type B
- Surge Protection: Type 2 SPD
- Enclosure Size: 14-way
- Usable Spare Ways: 8
- Enclosure: Metal
- Application: Domestic heat pump & renewable expansion
This consumer unit is supplied factory-assembled to reduce installation time and simplify on-site wiring. Final connection and commissioning must be carried out by a qualified electrician.
- Install in accordance with BS 7671 (18th Edition Amendment 2)
- Ensure SPD earth connections are kept as short as possible
- Confirm Type B RCD suitability for the connected heat pump
- Spare ways can be populated later as additional circuits are required
- Suitable for indoor domestic installations
