Dencon Metal Back Box - 1-Gang - 25mm

The Dencon Metal Back Box is a reliable 1-Gang socket box designed for secure electrical installat...

Best current price£0.77from Power Tools Direct

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Power Tools DirectDencon 8847Nb Metal Back Box 1-Gang 25Mm
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Blueperry agriculture (UK)Dencon 1 Gang Metal Box 25 Mm 8847Nb
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Rapid Online - Rapid Electronics Ltd.Dencon 8847NB Metal Back Box 1-Gang 25mm
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B&QB&Q - 8847Nb Metal Back Box 1-Gang 25mm Dcn8847Nb
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eBayDencon 1-Gang 25mm Metal Back Box - Durable & Versatile
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Product Information

Full details

The Dencon Metal Back Box is an essential component for electricians and DIY enthusiasts looking to create a secure, flush-mounted electrical installation. It offers a robust 25mm deep housing that ensures reliable socket support and safety compliance for residential and commercial projects, though users should note that the 25mm depth may be insufficient for deep-bodied smart switches or complex wiring layouts.

All features

Model Part Number8847NB
BrandDencon

Extended Product Information

FAQs

Is this box suitable for outdoor use?

No, this is a standard indoor metal back box and does not provide weatherproofing; use an IP-rated enclosure for outdoor applications.

Can I use this for deep smart switches?

A 25mm depth is often insufficient for bulky smart switches or dimmers. Check the manufacturer's recommendation for minimum box depth before installation.

Does it come with mounting screws?

No, mounting screws for the wall are not included as they depend on your specific wall material (e.g., masonry vs. plasterboard).

What does BS4662 mean?

BS4662 is the British Standard for steel boxes for the enclosure of electrical accessories, ensuring the product is tested for safety and mechanical strength.

Is the box conductive?

Yes, as a metal box, it must be properly grounded via the integrated earth terminal to ensure user safety.

Troubleshooting

Difficulty inserting cables through knock-outs

Ensure the knock-out has been fully removed using a hammer and flat-head screwdriver; use a rubber grommet to protect cables.

Socket faceplate is not level

Utilize the adjustable lug feature by slightly loosening the mounting screw, adjusting the lug position, and re-tightening.

Pros and Cons

Pros

  • Robust metal construction for durability
  • Easy to align with adjustable lugs
  • Meets BS4662 safety standards
  • Versatile cable entry options

Cons

  • 25mm depth may be too shallow for some smart home devices
  • Requires metal conduit or grommets for cable protection
  • Heavy weight compared to plastic alternatives

Setup, Compatibility & Care

To install, ensure the wall cavity is cut to the correct dimensions to house the box flush with the surface. Secure the box using appropriate screws through the provided mounting points. Always ensure that a protective grommet is inserted into the knock-out hole to prevent cable insulation damage from sharp metal edges. For maintenance, periodically inspect the earth connection to ensure it remains tight and free from corrosion to maintain electrical safety standards.

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