Hi everyone,
I would be happy to share with you a safety and regular matter according to the plan is simple and easy and without any risk to the mind.

Pedestrian / cable ducts - permanently breaker
Stepping ducts for permanent installations in the form of a small breaker 50 mm high with 2 internal ducts for transmitting electrical cabling / piping.

Durability for vehicles weighing up to 20 tons (permanently installed at a travel speed of 10 km / h). Made of high-quality EPDM hard rubber for all weather conditions.

The canals have 2 separate lower slits, each with a width of 36 mm and a maximum height of 27 mm (in a rounded configuration upwards).

3 models in 3 different lengths: 900 mm, 1200 mm, 1850 mm + option to add a final set separately (part number DH-SP-6E) - below are the three models:

• DH-SP-26M - 1.85 meters long

• DH-SP-28M - 0.9 meters long

• DH-SP-29M - 1.2 meters long

Is this a product advertisement? It seems a little out of place in this thread, unless I've missed something?

Why advertisement if it is possible to build safer, simpler and safer as we will see in the picture.

But this has nothing to do with the discussion in this thread, which is to do with earthing arrangements, and not mechanical protection of tethered charging cables?

Why not related?
This is a project that will contain some cargo in the parking lot in the basement of the building and seeks assistance regarding guidelines for a grounding arrangement and I suggest according to a diagram how to do this easily and simply.
My explanation contains the professional knowledge for installing cargo.

Benyamin Davodian said:

This is a project that will contain some cargo in the parking lot in the basement of the building and seeks assistance regarding guidelines for a grounding arrangement and I suggest according to a diagram how to do this easily and simply.

Please could you let me know what I've missed - how doesthe ramp shown relate to earthing arrangements for the charging equipment or charging point?

We are all here to contribute and learn, and it's important to know what I've missed.

Good evening gkenyon,
Explain: When there is a fault in the flow of electricity, the electricity may leak out of the appliance. The nature of electricity is to reach the ground, so in such a situation, since the human body carries electricity, every person who touches the electrical device is a path for the electricity to reach the floor and this is why there is the ramp that covers the cable to the ground. The function of the ground cable is to be an "escape route" that allows electricity to flow to the ground in the event of a fault, in other words - instead of the electricity flowing through the person and reaching the floor, it flows through the ground cable and thus prevents electric shock.

There may be a misunderstanding, but I presented my position according to my professional understanding of the matter, so I presented a more convenient construction chart, because each person can express his opinion but others do not have to accept that it is also acceptable.

Good evening gkenyon,
Explain: When there is a fault in the flow of electricity, the electricity may leak out of the appliance. The nature of electricity is to reach the ground, so in such a situation, since the human body carries electricity, every person who touches the electrical device is a path for the electricity to reach the floor and this is why there is the ramp that covers the cable to the ground. The function of the ground cable is to be an "escape route" that allows electricity to flow to the ground in the event of a fault, in other words - instead of the electricity flowing through the person and reaching the floor, it flows through the ground cable and thus prevents electric shock.

There may be a misunderstanding, but I presented my position according to my professional understanding of the matter, so I presented a more convenient construction chart, because each person can express his opinion but others do not have to accept that it is also acceptable.

Agreed ... in part. Such mechanical protection will not address earth faults in the vehicle itself, or the charging equipment.

This thread is talking about a particular arrangement of earthing in the supply to the electrical installation, that is used in the UK, called PME, and some restrictions we have in legislation and our national wiring code, BS 7671, on the use of PME supplies.

I asked the question about advertisement, as we have had a number of occasions in the past on the Forum, where people have "piggy-backed" onto a discussion to advertise products.


Please could you share the standards that this ramp is made to, that identifies the grade of mechanical protection offered to the cables, and the tests performed to prove that? We have some specific requirements in the UK about cable containment and protection, and installers would require that information.

Fixing the mobile ramp made of rubber or white from Triflex Asphalt Repro - a strong and durable material used to create a quality ramp with a high carrying capacity.
The tests performed to prove this you can contact a civil engineer and get the answer.
I am a mechanical engineer specializing in the vehicle and I gave an interview and no publicity, so I can not answer you the question that is not in my professional field and it is a question that is more about a civil engineer.

Benyamin Davodian said:

Fixing the mobile ramp made of rubber or white from Triflex Asphalt Repro - a strong and durable material used to create a quality ramp with a high carrying capacity.
The tests performed to prove this you can contact a civil engineer and get the answer.
I am a mechanical engineer specializing in the vehicle and I gave an interview and no publicity, so I can not answer you the question that is not in my professional field and it is a question that is more about a civil engineer.

I'm not 100 % sure that would satisfy BS 7671 requirements for a cable route.

In any case, it's definitely not something we are considering in this thread, which relates to how the supply transformer and distribution cable is earthed ... whether the fault is in the vehicle connecting cable, or the vehicle itself, is totally irrelevant ... the fault we are discussing in this thread is in the electrical distribution system that supplies the premises.

In terms of the use of products like this in the UK, we would always recommend the charging equipment is installed close to the vehicle, and the tethered lead or connecting cable kept as short as possible.

I have experience with similar products used with armoured cables in other countries, which have led to armoured cables being damaged in a relatively short period of time, which is why I think it is very important to specify standards for such products, to ensure they achieve the required objectives.

Good morning Mr. gkenyon,
Each country has its own standards, good to know and thank you very much for the update.