Hey Nick How should we size bonding conductor for an electrical equipment (panel board for example) when it feeds from less than 7.5m tap conductors. There isn't any O/C device there.
Great video! In the new code, is there any instance where you don't need a bonding conductor ran in the conduit? table 16 seems to point that everything pretty much needs a bonding conductor. it goes all the way down to 20A.
Some installations allow the conduit, if metal, as the bond for the circuit without the use of an actual bonding conductor. Its the type of raceway and installation that will dictate whether you need to pull a separate bonding conductor. For instance, EMT conduit that is run above ground in doors does not need a separate bonding conductor as the bonding continuity is maintained through the conduit and connections at every fitting and device box. It is situationally based so its hard to give a definitive answer.
The main service is where the Service grounding conductor is connected to the grounded conductor only in one location. Everything else will be bonded to ground from that point. Follow your local municipal code and the CEC if in Canada for specifics.
Hey Nick
How should we size bonding conductor for an electrical equipment (panel board for example) when it feeds from less than 7.5m tap conductors. There isn't any O/C device there.
Great video! In the new code, is there any instance where you don't need a bonding conductor ran in the conduit? table 16 seems to point that everything pretty much needs a bonding conductor. it goes all the way down to 20A.
Some installations allow the conduit, if metal, as the bond for the circuit without the use of an actual bonding conductor. Its the type of raceway and installation that will dictate whether you need to pull a separate bonding conductor. For instance, EMT conduit that is run above ground in doors does not need a separate bonding conductor as the bonding continuity is maintained through the conduit and connections at every fitting and device box. It is situationally based so its hard to give a definitive answer.
What tp do when you have 2 service entrances to a house? how are they bonded?
The main service is where the Service grounding conductor is connected to the grounded conductor only in one location. Everything else will be bonded to ground from that point. Follow your local municipal code and the CEC if in Canada for specifics.