3 Phase Extension Board – 14 Module (WTPNEB14)
18th Ed. Compliant
2-Year Warranty
UK Stock
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WTPNEB14 is a 14-module 3 phase extension board designed for use within the Whitecliffe WTPN range. It provides a practical way to expand circuit capacity on existing 125A three-phase distribution systems without replacing the main board. Built in a robust 1.2mm steel enclosure, this extension board is suited to commercial,...
WTPNEB14 is a 14-module 3 phase extension board designed for use within the Whitecliffe WTPN range. It provides a practical way to expand circuit capacity on existing 125A three-phase distribution systems without replacing the main board.
Built in a robust 1.2mm steel enclosure, this extension board is suited to commercial, industrial, and larger domestic installations where extra outgoing ways are needed. It accepts our 6kA devices without modification or additional hardware, helping keep system expansion straightforward and consistent with the wider WTPN board range.
- 14-module extension format – expands existing WTPN board capacity
- Designed for the WTPN range – compatible with Whitecliffe 125A three-phase board systems
- 1.2mm steel enclosure – built for long service life in demanding environments
- Compatible with 6kA devices – no modification or additional hardware required
- Keyway mount design – allows easy removal of the pan for off-board population
- Dimensions: 460 x 341 x 120mm
For related components, browse our three-phase board accessories, MCBs, and RCBOs used across the wider WTPN system.
Can this be used on any three-phase board?
No. WTPNEB14 is designed specifically for the Whitecliffe WTPN range, so compatibility should be checked before purchase.
What is the purpose of the extension board?
It allows you to expand circuit capacity on an existing WTPN three-phase system without replacing the main distribution board.
What protective devices can be used in this board?
WTPNEB14 accepts Whitecliffe 6kA devices without modification or additional hardware.
What does the keyway mount design do?
The keyway mount allows easy removal of the pan so it can be populated away from the enclosure before final installation.
What are the dimensions of WTPNEB14?
The enclosure dimensions are 460 x 341 x 120mm.
- Model: WTPNEB14
- Product Type: TPN Extension Board
- Module Capacity: 14 Module
- Range Compatibility: WTPN 125A 3 Phase Distribution Board range
- Device Compatibility: Accepts 6kA devices without modification or additional hardware
- Construction: 1.2mm steel enclosure
- Mounting Feature: Keyway mount for removable pan access
- Dimensions (WxHxD): 460 x 341 x 120mm
WTPNEB14 should be installed by a qualified electrician as part of a compatible WTPN three-phase board arrangement. Confirm system compatibility and layout requirements before ordering or fitting.
- Verify compatibility with the existing WTPN board configuration
- Allow adequate space for the full enclosure dimensions during installation
- Use the keyway-mounted pan arrangement to simplify off-board population where required
- Maintain neat cable dressing and access for future inspection and testing
