Earthing & Overload System
To reduce the operators operational problems and ensure that the system is safe and functional, two main areas have to be addressed, Earthing and Overload.
Earthing Systems
There are several types of earthing systems available and usually provided by your Distribution Network Operator, however not all of these are suitable for protecting Caravan Park & Marina type installations.
At Hawkins Electrical our designers ensure that the installation is protected by the most suitable arrangement, offering the safest protection for these special locations.
Overload Protection
In providing a suitable protection system, the designer has to take into account overload and short circuit protection.
Most parks start small and grow. As the supply capacity increases so do the magnitude of the electrical fault levels, it is therefore essential that the correct protective devices are installed to combat these high fault levels. Most park and marina operators have been given the belief that miniature circuit breakers are best and easy to reset. However on main cable and circuit distribution a typical fault level can be up to and in excess of 20,000 Amps, the majority of miniature circuit breakers can only handle 6,000 or 10,000 Amps. Therefore the Hawkins designs use BS88 fuse links for back up, capable of handling these higher fault levels, giving the installation better protection which leads to a longer working life. Again with overload devices, discrimination has to be put into the system to ensure that miniature circuit breakers and overload devices operate in the correct sequence, to avoid nuisance tripping and unnecessary supply interruptions.
You can be assured that Hawkins Electrical System Design takes account of all these requirements that may be ignored by other installers.
To reduce the operators operational problems and ensure that the system is safe and functional, two main areas have to be addressed, Earthing and Overload.
Earthing Systems
There are several types of earthing systems available and usually provided by your Distribution Network Operator, however not all of these are suitable for protecting Caravan Park & Marina type installations.
At Hawkins Electrical our designers ensure that the installation is protected by the most suitable arrangement, offering the safest protection for these special locations.
Overload Protection
In providing a suitable protection system, the designer has to take into account overload and short circuit protection.
Most parks start small and grow. As the supply capacity increases so do the magnitude of the electrical fault levels, it is therefore essential that the correct protective devices are installed to combat these high fault levels. Most park and marina operators have been given the belief that miniature circuit breakers are best and easy to reset. However on main cable and circuit distribution a typical fault level can be up to and in excess of 20,000 Amps, the majority of miniature circuit breakers can only handle 6,000 or 10,000 Amps. Therefore the Hawkins designs use BS88 fuse links for back up, capable of handling these higher fault levels, giving the installation better protection which leads to a longer working life. Again with overload devices, discrimination has to be put into the system to ensure that miniature circuit breakers and overload devices operate in the correct sequence, to avoid nuisance tripping and unnecessary supply interruptions.
You can be assured that Hawkins Electrical System Design takes account of all these requirements that may be ignored by other installers.
