A
ash_s3
Hi
Il try and keep this a simple as possible..
Been to look at a job today which started off as 'install a supply from the house to a static caravan in the garden' simple enough, when i arrived the house was a farmhouse which had recently been rewired in places and a new 17th split load board installed.
Its a small holding comprising of farmhouse and a few outbuildings which house a few chickens and ducks, only small scale.
Supply to the house is overhead TT.
The house DB is supplied from the external meter box wired in 16mm2 T+E approx 7m away with no up-front RCD.
The DNO fuse is rated at 80A, there is an isolator in the external meter box straight after the meter, then a double pole henley block which the 16mm2 T&E is connected into, aswell as another feed for an outbuilding wired in SWA. (SWA to galv box then tails to the henley)
Im wanting to install another supply from the meter position to an outbuilding with no current electricity supply, where i will install a consumer unit to supply the static caravan and also be of use in the future for lighting and small power in the outbuilding.
To power the caravan hes currently using extension leads (multiple) and complaining about tripping when using the 2Kw heater at the same time as switching on the kettle :mad2:
I understand that any submain from a TT supply needs RCD protection whether SWA or not, so am i better trying to squeeze in a 100mA S type in the meter box to cover the entire installation?
I plan to install an earth rod at the new outbuilding DB and also at the caravan. Can these locations (mains intake, outbuilding and caravan) have the earths linked as to provide a lower Ra or does the caravan need to be isolated from the TT at the origin.
Il try and keep this a simple as possible..
Been to look at a job today which started off as 'install a supply from the house to a static caravan in the garden' simple enough, when i arrived the house was a farmhouse which had recently been rewired in places and a new 17th split load board installed.
Its a small holding comprising of farmhouse and a few outbuildings which house a few chickens and ducks, only small scale.
Supply to the house is overhead TT.
The house DB is supplied from the external meter box wired in 16mm2 T+E approx 7m away with no up-front RCD.
The DNO fuse is rated at 80A, there is an isolator in the external meter box straight after the meter, then a double pole henley block which the 16mm2 T&E is connected into, aswell as another feed for an outbuilding wired in SWA. (SWA to galv box then tails to the henley)
Im wanting to install another supply from the meter position to an outbuilding with no current electricity supply, where i will install a consumer unit to supply the static caravan and also be of use in the future for lighting and small power in the outbuilding.
To power the caravan hes currently using extension leads (multiple) and complaining about tripping when using the 2Kw heater at the same time as switching on the kettle :mad2:
I understand that any submain from a TT supply needs RCD protection whether SWA or not, so am i better trying to squeeze in a 100mA S type in the meter box to cover the entire installation?
I plan to install an earth rod at the new outbuilding DB and also at the caravan. Can these locations (mains intake, outbuilding and caravan) have the earths linked as to provide a lower Ra or does the caravan need to be isolated from the TT at the origin.