Inlet on boiler

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LLSolutions said:
My issue would be back feeding on the neutral.
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I have less of a problem with that and more of a problem with the exposed neutral prong on the inlet. If the "normal" power neutral goes open, you've got a hot prong sticking out of that inlet now. :cool: I'd rather see a DPDT relay involved here that would drop out when normal power was lost and let the inlet be connected to the furnace.
 
M. D. said:
Marc,.could the same thing be said for this

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Absolutely not.

Actually, I have no idea. If that's built the same way as your furnace setup, without a relay, I have the same concern about the Gentran switch pictured. I'm going out to Lowe's later. I might buy one, take it apart and check, then return it. (unless someone knows already)
 
mdshunk said:
Absolutely not.

Actually, I have no idea. If that's built the same way as your furnace setup, without a relay, I have the same concern about the Gentran switch pictured. I'm going out to Lowe's later. I might buy one, take it apart and check, then return it. (unless someone knows already)
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You don't have one in stock already? :confused:
 
iwire said:
It is imposable to back feed any circuit with only one conductor.
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Scenario: power line goes down, utility worker connects grounded conductor first wouldn't part of the neutral load take that path? I know the lineman would have all his ppe on but there would be current on the wire no? I know this happens in any transfer switch the does not transfer the neutral.
 
M. D. said:
they 3-way switch is not listed for the purpose I've used it for...
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I agree.


mdshunk said:
It's actually listed as a switch. How you use it is up to you. I've used 3-ways as fan speed selectors already.
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Transfer switches both manual and automatic have a different listing then normal switches.

It is found in the white book TRANSFER SWITCHES (WPTZ)


FWIW I have also used three ways as fan speed controls.
 
mdshunk said:
No... I don't use them at all. I use the see-saw handle intertie thing on a regular subpanel.
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peter d said:
Oh right, the Square D thingamabob. Do you also use the see-saw that interlocks the main breaker to a generator feed breaker without the use of a subpanel?
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QO2DTI

qo2dti.jpg
 
i'll give you my LLsolution ;), who would see a problem with the boiler system being cord and plug connected? IE: break the circuit before it goes to the emergency switch and let only the ground be common, maybe a 20A twistlock and receptacle by the panel? Or just get them a small 4 circuit gentran or similar item?
 
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LLSolutions said:
Wouldn't part of the current go through all possible paths, including ground? I'm not saying the full amount of it but some.
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The path out to the utility via the neutral is not a 'possible path' without a second conductor from the generator also connected to the utility.
 
iwire said:
The path out to the utility via the neutral is not a 'possible path' without a second conductor from the generator also connected to the utility.
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Could the second path be earth? H/O panel is grounded and so it the transformer on the pole. Not Even 1 little milliamp Bob?
 
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M. D. said:
they 3-way switch is not listed for the purpose I've used it for...
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The last time I checked with Hubbell, their answer was that a three-way switch is not rated to transfer between sources of power. It works fine for transferring loads, but it lacks the internal clearances/insulation required for live source to live source switching.
 
jim dungar said:
The last time I checked with Hubbell, their answer was that a three-way switch is not rated to transfer between sources of power. It works fine for transferring loads, but it lacks the internal clearances/insulation required for live source to live source switching.
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Would a "center-off" three-way be rated for transferring between sources of power?

Cheers, Wayne
 
jim dungar said:
The last time I checked with Hubbell, their answer was that a three-way switch is not rated to transfer between sources of power. It works fine for transferring loads, but it lacks the internal clearances/insulation required for live source to live source switching.
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that sounds right to me ,.. there will never be a live source to live source switching ...
it's staying !!:smile:
 
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