bucktracker
New member
I have a 200 amp service in a steel frame building. Does the building have to be grounded and if so what size copper wire should I use and how should I make the connection. Thanks
Grounding
- Thread starter bucktracker
- Start date
- Status
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Re: Grounding
The answer is yes. The size would be according to table 250.66.
The answer is yes. The size would be according to table 250.66.
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Re: Grounding
Trevor
I've worked with many electricians who wouldn't know this. It doesn't make them bad electricians. I've heard guys say, if it's not on the print than it doesn't get installed. I'm not saying that it's right but I've seen it quite often. Obviously Mr. Buck was looking for some information and he should feel like he's come to the right place. Just my opinion.Originally posted by Jhr:
I'm not sure about this one, your profile says you are an electrician, shouldn't you know this.
Trevor
bphgravity
Senior Member
- Location
- Florida
Re: Grounding
If the metal frame of a building is already effectively grounded to the earth, the electric service needs to be grounded to it.
If you have structural metal in a building that is not grounded and may become energized, it needs to be bonded to the service.
To many electricians have the mind set that they are grounding things when what they are really doing is grouning the service. Anything else is bonding.
If the metal frame of a building is already effectively grounded to the earth, the electric service needs to be grounded to it.
If you have structural metal in a building that is not grounded and may become energized, it needs to be bonded to the service.
To many electricians have the mind set that they are grounding things when what they are really doing is grouning the service. Anything else is bonding.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Re: Grounding
Hmmm. Maybe we should implement an electrical inspection program.
Re: Grounding
Yes, the steel needs to be bonded. I've always used either Cad-weld or compression. I've also seen lugs bolted to the beams, not illegal just too easy to remove and forget about.
If you use GRC, IMC, or EMT to protect it, remember to bond the pipe at both ends to the bonding jumper.
Yes, the steel needs to be bonded. I've always used either Cad-weld or compression. I've also seen lugs bolted to the beams, not illegal just too easy to remove and forget about.
If you use GRC, IMC, or EMT to protect it, remember to bond the pipe at both ends to the bonding jumper.
- Status