Mike.C
Established Member
Many of you are probably fed up of hearing that my dad installed a dust extraction system for me when i was working away from home.
This seems to be working very good, but we have now been told that this has not been installed properly (or the earthing part of it hasn't), and may be a fire hazard.
When he bought the parts, to save money, he got the metal ducting, metal blast gates, metal joiners, and metal hangers from one place and because they were far cheaper, he got the "plastic" Y sections from another store.
After seeking advice on installing the system he was told to connect one end of the metal ducting to a solid copper earthing pole, which was hammered into the ground outside the workshop, and from there to run earthing cable on the outside of the ducting all along its length, and when he came to each piece of plastic Y section, to use self tapping screws and jump each one, securing it on the other side.
When he came to each machine, he again had to secure a piece of earthing cable, and jump the Y section.
But now i have been told that this is all wrong and that it is the plastic that needs earthing and the metal parts should never be earthed, and that as it is now it is a hazard, and could cause a fire. He said that i would have to find away of earthing just the plastic Y sections themselves.
He also said that the earthing cable should be run inside the ducting and not on the outside, but surely in the end the dust would collect around the wire and cause a blockage?
Can anyone tell me if any of this is right, and if so what can i do to correct it?
Cheers
Mike
This seems to be working very good, but we have now been told that this has not been installed properly (or the earthing part of it hasn't), and may be a fire hazard.
When he bought the parts, to save money, he got the metal ducting, metal blast gates, metal joiners, and metal hangers from one place and because they were far cheaper, he got the "plastic" Y sections from another store.
After seeking advice on installing the system he was told to connect one end of the metal ducting to a solid copper earthing pole, which was hammered into the ground outside the workshop, and from there to run earthing cable on the outside of the ducting all along its length, and when he came to each piece of plastic Y section, to use self tapping screws and jump each one, securing it on the other side.
When he came to each machine, he again had to secure a piece of earthing cable, and jump the Y section.
But now i have been told that this is all wrong and that it is the plastic that needs earthing and the metal parts should never be earthed, and that as it is now it is a hazard, and could cause a fire. He said that i would have to find away of earthing just the plastic Y sections themselves.
He also said that the earthing cable should be run inside the ducting and not on the outside, but surely in the end the dust would collect around the wire and cause a blockage?
Can anyone tell me if any of this is right, and if so what can i do to correct it?
Cheers
Mike