mains supply to outside gate electric motor
Ask questions and find answers to many subjects relating to electrics and electrical work

6 posts   •   Page 1 of 1
captain
Labourer
Labourer
Posts: 2
Joined: Fri Apr 17, 2009 4:33 pm

mains supply to outside gate electric motor

by captain » Fri Apr 17, 2009 4:55 pm

I want to install a mains electric supply to an electric motor for opening a heavy wooden sliding gate across my drive.

I intend to take the cable underground for about three metres. I want the installation to comply with the IEE regulations 17th edition.

The questions I have are:

Should there be a dedicated RCD for this circuit?

Can the RCD be fitted to the external wall where the cable will emerge?

What cable should be used - SWA (steel wire armoured), SY flexible, or 2.5 mm PVC twin and earth run through PVC electrical conduit?

How deep should the trench be, and does it have to be marked?

I am a Chartered Electrical Engineer (electronics) and very practical, but not a qualified electrician. I am very aware of safety issues.

Thanks :shock:

ban_all_sheds
Apprentice
Apprentice
Posts: 11
Joined: Wed Mar 11, 2009 7:29 pm

by ban_all_sheds » Fri Apr 17, 2009 11:00 pm

swa is 2.5 is fine

no need to rcd protect cable

600mm is regarded as deep enough, place some orange marker tape 200mm above cable.

captain
Labourer
Labourer
Posts: 2
Joined: Fri Apr 17, 2009 4:33 pm

by captain » Sat Apr 18, 2009 4:12 pm

Many thanks for the prompt reply.

You wrote 'swa is 2.5 is fine'.

Did you mean - swa or 2.5 is fine?

ban_all_sheds
Apprentice
Apprentice
Posts: 11
Joined: Wed Mar 11, 2009 7:29 pm

by ban_all_sheds » Sat Apr 18, 2009 10:17 pm

sorry.

2.5 swa is fine

sparx
Project Manager
Project Manager
Posts: 2166
Joined: Wed Mar 21, 2007 8:33 pm
Location: The fifth continent.

by sparx » Sun Apr 19, 2009 11:52 pm

Hi, although you may have some very good qualifications unless you are registered with a Part-p competant persons scheme, you must notify building control before starting this work out doors, and pay an inspection fee. This is legal requirement,
regards SPARX

troublemaker
Labourer
Labourer
Posts: 2
Joined: Sun Jul 19, 2009 5:41 pm

by troublemaker » Sun Jul 19, 2009 6:23 pm

I realise this thread is rather old but I was surprised at this comment:-

[quote="ban_all_sheds"]no need to rcd protect cable[/quote]

I thought it good practice, if not a requirement, to ensure all outdoor circuits are protected by a 30mA RCD (in the consumer unit or dedicated if not).

6 posts   •   Page 1 of 1
It is currently Fri Nov 08, 2024 11:31 pm