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Low Earth Orbit
Lighting & Electrical
Portable Generator Safety
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<blockquote data-quote="Jay Barracato" data-source="post: 64604" data-attributes="member: 24"><p>You are confusing the two meanings/purposes of ground which depends which side of the neutral ground bond you are on.</p><p></p><p>On the stage side of the system the safety ground wire provides a direct path so if you loose the neutral, the current draw should pop the breaker. The worse case is if the hot energizes metal in the system. Bonding all the metal together provides the path so someone touching the metal doesn't become the return path.</p><p></p><p>The ground on the other side of the ground/ neutral bond serves two purposes; it provides lightning protection and serves as a local zero potential which is why a service should only have 1 bonding point.</p><p></p><p>I think the question of use is not quite as clear when you are using a generator because I read the codes to say that the deciding factor is whether you are using a distributed system or not. As far as I can tell if you are using the convenience outlets mounted on the generator you do not need a separate ground rod, however having one does no harm.</p><p></p><p>If you have a distributed system which means to me a higher current that is broken out to branch circuits with breakers that are not mounted on the generator then you need the ground rod.</p></blockquote><p></p>
[QUOTE="Jay Barracato, post: 64604, member: 24"] You are confusing the two meanings/purposes of ground which depends which side of the neutral ground bond you are on. On the stage side of the system the safety ground wire provides a direct path so if you loose the neutral, the current draw should pop the breaker. The worse case is if the hot energizes metal in the system. Bonding all the metal together provides the path so someone touching the metal doesn't become the return path. The ground on the other side of the ground/ neutral bond serves two purposes; it provides lightning protection and serves as a local zero potential which is why a service should only have 1 bonding point. I think the question of use is not quite as clear when you are using a generator because I read the codes to say that the deciding factor is whether you are using a distributed system or not. As far as I can tell if you are using the convenience outlets mounted on the generator you do not need a separate ground rod, however having one does no harm. If you have a distributed system which means to me a higher current that is broken out to branch circuits with breakers that are not mounted on the generator then you need the ground rod. [/QUOTE]
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