Grounding Portable Wash & Work Station: Options for Safe & Sound Use

  • Thread starter Thread starter brip
  • Start date Start date
  • Tags Tags
    Grounding
AI Thread Summary
A portable wash and work station has been designed for use in various locations, but grounding poses a challenge due to the lack of available ground in many places. The discussion highlights the importance of safety standards, particularly OSHA requirements, which complicate the use of GFCI outlets without a ground. Suggestions include using UL listed extension cords with GFCI protection, though this does not fully address safety concerns. The conversation emphasizes the need for compliance with regulations while exploring alternative solutions, such as battery-powered devices. The quest for a practical and safe grounding method continues amidst regulatory complexities.
brip
Messages
3
Reaction score
0
I designed and built a portable wash and work station for my friend who is in the beatifcation business. its a four foot long folding table with folding metal legs and has a small wash basin and one 120 volt GFI outlet that is pluged into the house power source. My quest is to ground this unit when often there is no ground available in 50% of the places she would take it?...I think what I`m looking for is a portable grounding that can be used. conventional wisdom is to run a wire and clamp to water line,but in this case that's not always an option. So is there a safe and sound way to ground this unit?
Any input wiil be greatly appreciated...Bri-p
 
Engineering news on Phys.org
brip said:
I designed and built a portable wash and work station for my friend who is in the beatifcation business. its a four foot long folding table with folding metal legs and has a small wash basin and one 120 volt GFI outlet that is pluged into the house power source. My quest is to ground this unit when often there is no ground available in 50% of the places she would take it?...I think what I`m looking for is a portable grounding that can be used. conventional wisdom is to run a wire and clamp to water line,but in this case that's not always an option. So is there a safe and sound way to ground this unit?
Any input wiil be greatly appreciated...Bri-p

The safe and sound method would be to remove the convenience GFCI protected receptacle from the table. Use a UL listed extension cord or other UL listed device having GFCI protection. This will not improve the overall safety considerations but limits personal liability.

A GFCI does not require a grounding conductor to function properly.


...
 
Last edited by a moderator:
Geniere, thanks so much for interest and your right, but Osha states that a GFI without a ground is not safe and there lies the problem as my friend who would use this unit has a license and is reqiuerd to meet their standards of safety.
 
This is really a legal issue rather than a technical issue. I can think of several means to greatly reduce the shock risk to your friend and the customer. I can think of nothing that would satisfy the many, sometimes conflicting, regulations that exist. In truth I have only a rudimentary knowledge of hte NEC and almost no knowledge of OSHA standards. There may be some relief found in "tempory wiring" as specified by the NEC.

I'm at a loss except to suggest battery powered devices.

Ain't bureaucracy wonderful?


...
 
Thanks Geniere and I wiil keep looking for differnt sulutions within the NEC and maybe I will try and talk to somone at OSHA.
 

Thread 'How might electronics be different if AC voltage was 72V at 45 Hz?'

Hey guys. I have a question related to electricity and alternating current. Say an alien fictional society developed electricity, and settled on a standard like 73V AC current at 46 Hz. How would appliances be designed, and what impact would the lower frequency and voltage have on transformers, wiring, TVs, computers, LEDs, motors, and heating, assuming the laws of physics and technology are the same as on Earth?
View full post »

Thread 'Why does the amperage go real high if there is a low voltage short?'

I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...
View full post »

Thread 'What happens if shielded cable has a short to the shield?'

While I was rolling out a shielded cable, a though came to my mind - what happens to the current flow in the cable if there came a short between the wire and the shield in both ends of the cable? For simplicity, lets assume a 1-wire copper wire wrapped in an aluminum shield. The wire and the shield has the same cross section area. There are insulating material between them, and in both ends there is a short between them. My first thought, the total resistance of the cable would be reduced...
View full post »

Hot Threads

Recent Insights

Back
Top