Do meter tails have to be protected?
Do meter tails have to be protected?
Yes. Meter tails concealed in a wall or partition at a depth of less than 50 mm from a surface must be protected in accordance with Regulation 522.6. 202. Also, irrespective of the depth from a surface, meter tails concealed in a wall or partition having internal metallic parts (except nails and screws, etc.)
What size should my meter tails be?
Generally installed meter tails are 25mm. A smaller diameter such as 16mm would be permitted providing the cut-out fuse is sized in accordance with section 433.1. 1 of BS 7671, where the rated current of the protective device does not exceed the current carrying capacity of the meter tails.
How long can you have meter tails?
3 metres
The meter tails between the meter position and your consumer unit should not be longer than 3 metres.
Can meter tails be extended?
Meter Tails longer than 3m. Additional overcurrent protection is required, by means of a fuse-switch or equivalent – most RECs state that their cutout fuse will only cover the first 3m of the meter tails….See Also:
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Can 16mm tails carry 100a?
In some new appartments we’ve nearly completed, the fuse is 80A, yet the tails from meter to isolator (DNO fitted)are 25mm….See Also:
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Can an electrician change meter tails?
An electrician can provide meter tails and upgrade them when necessary. However, only your electricity supplier can connect the meter tails to your meter and the cut-out/service head. These cables connect the consumer unit to your meter.
Can I leave 16mm meter tails?
No. If the meter tails to the consumer unit are longer than 3m (or whatever the local DNO specifies), then you must fit overcurrent protection within the first 3m (or the specified distance) cable length, irrespective of the rating for your extended tails, and irrespective of the rating of the DNO fuse.
What size tails for 80 amp supply?
16mm tails
80 amp supplies have a lot of flexibility, loose 16mm tails dont, I disagree – 16mm tails are sufficeient for virtually all domestic installations unless the homeowner has a small arc furnace in his shed….See Also:
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What is a KMF?
KMF. Kicking My Feet. Copyright 1988-2018 AcronymFinder.com, All rights reserved.
Who can install a mains isolator?
Any competent person can install an isolator switch, but it does require the main fuse to be pulled in some cases, unless the meter is one of the few that includes a built in isolator (in which case it’s questionable as to whether it’s worth fitting a second one).
What size tails for 100a fuse?
Who is responsible for the meter tails?
