| reply to sk1939
Re: Electrical Insanity But there's no primary neutral wire. The primary is connected between the primary hot and ground. The secondary neutral is also grounded. |
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sk1939Premium
join:2010-10-23
Washington, DC
kudos:9 | That may be, but it is still necessary. |
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| reply to Zapppp
said by Zapppp :But there's no primary neutral wire. The primary is connected between the primary hot and ground. The secondary neutral is also grounded.
In some secondaries there is a neutral (grounded one, but still). If you insist on proper wording, replace "tree branch takes out service neutral (but not hot)" with "tree branch takes out service return wire". |
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 49528867Premium
join:2010-04-16
Fort Lauderdale, FL
kudos:3 | reply to Zapppp
said by Zapppp :But there's no primary neutral wire. The primary is connected between the primary hot and ground. The secondary neutral is also grounded.
There most certainly is, as the normal way to connect a dual busing transformer in a multi-grounded neutral (MGN) system is to run a conductor from the neutral primary bushing to the MGN that conductor will also be bonded to the poles ground.
Note carefully in the shot above and you can see the conductor leaving the primary neutral bushing on the left of the lid, it then travels to the pole and can be seen just below the lid and the upper bracket and from there it travels down and is connected to the MGN.
Now in the upper shot above you can see the secondary bushing is bonded to the transformer case and on the upper right is the primary neutral bushing though you cannot see the conductor going toward the rear of the transformer, in the lower shot you can see the conductor from the primary neutral bushing of the same transformer is connected to the MGN and is “C” crimped to the pole ground, as is the transformer case.
Wayne
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"It is sobering to reflect that one of the best ways to get yourself a reputation as a dangerous citizen these days is to go about repeating the very phrases which our founding fathers used in the struggle for independence." - Charles A. Beard |
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