does the conduit running from a load side of a service switch have to be bonded {emt}
does an egc have to be installed in the conduit.
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250.64 is for gec not egc.
emt is a good effective ground fault path so an egc does not have to be installed.
am i correct on the 250.92
Ok guys the OP question was about the load side of the service (after the main) and 250.92 is ahead of the service disconnect (service entrance conductors)
I'm not seeing any special bonding requirements other then lock nuts??
Am I missing something?
Ok guys the OP question was about the load side of the service (after the main) and 250.92 is ahead of the service disconnect (service entrance conductors)
I'm not seeing any special bonding requirements other then lock nuts??
Am I missing something?
Sometimes I'm strident in my posts, because I'm certain.
Sometimes I am casual, because I want to keep things relaxed.
And, sometimes, I'm fuzzy, because I'm only 'feeling' but don't really 'know.' This is one of those times. For the OP, I have a definite opinion, but I know not from where I get the "authority." Maybe others can find citations, or clarify what I say that is actual code, as opposed to 'good practice.'
Now, to the OP's question ...
As I understand it, everything between the meter and the first overload device needs to be 'bonded;' that is, to use bonding bushings and the like, in addition to the usual bond formed by simple metal connections. If you are using a 'meter/main,' you woulndn't need to worry about this - but if you just have a meter base, a separate disconnect, and a main breaker in the panel, all that stuff in the middle gets 'extra' bonding.
Also, as I understand things, you only get to use conduit as your ground (egc) for branch circuits; feeders need a ground wire. As an example, the circuit feeding a 100-amp (sub) panel needs a ground wire, while the circuit feeding a 100-amp motor (starter) does not.
Also, as I understand things, you only get to use conduit as your ground (egc) for branch circuits; feeders need a ground wire. As an example, the circuit feeding a 100-amp (sub) panel needs a ground wire, while the circuit feeding a 100-amp motor (starter) does not.
Code section????...Also, as I understand things, you only get to use conduit as your ground (egc) for branch circuits; feeders need a ground wire. As an example, the circuit feeding a 100-amp (sub) panel needs a ground wire, while the circuit feeding a 100-amp motor (starter) does not.
true but dosnt the use of a bonding bushing also depend on if you use all of the syntrics or not250.92 i say yes conduit from load side of service switch must be bonded .
a bonding locknut can be used instead of a bonding bushing.
250.64 is for gec not egc.
emt is a good effective ground fault path so an egc does not have to be installed.
.250.92 i say yes conduit from load side of service switch must be bonded . <br>
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a bonding locknut can be used instead of a bonding bushing.<br>
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250.64 is for gec not egc. <br>
<br>
emt is a good effective ground fault path so an egc does not have to be installed.