Grounding and bonding
- Thread starter Djelite
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LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
With no grounded conductor, there's nothing to bond to in that sense.
If there is an EGC or conduit, you could say that provides grounding.
If there is an EGC or conduit, you could say that provides grounding.
By definition they are bonded:
Bonded (Bonding). Connected to establish electrical continuity
and conductivity.
Once the are connected to ground, then they re grounded:
Grounded (Grounding). Connected (connecting) to ground
or to a conductive body that extends the ground connection
Bonded (Bonding). Connected to establish electrical continuity
and conductivity.
Once the are connected to ground, then they re grounded:
Grounded (Grounding). Connected (connecting) to ground
or to a conductive body that extends the ground connection
ggunn
PE (Electrical), NABCEP certified
- Location
- Austin, TX, USA
- Occupation
- Consulting Electrical Engineer - Photovoltaic Systems
Grounding the enclosures and an ungrounded system are two different issues.
Ok i was taking an electrical class yesterday. A simple question from mike holts book was asked from article 314. It read as follows. All metal boxes should be……. I selected grounded because my understanding only a system or a service are truly grounded. Metal boxes are bonded to a grounded system. Then the instructor said metal part in an ungrounded system are also grounded. I thought it was wrong. Just double checking
- Location
- Illinois
- Occupation
- retired electrician
The only difference between a grounded or ungrounded system as far as bonding and grounding goes is that the ungrounded system does not have a main bonding jumper if service supplied, or system bonding jumper if supplied by a separately derived system.
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