| Author |
GFCI With Additional Coil?
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| The Streets 2007-06-26, 8:25 pm |
| I'm replacing a GFCI in a hot tub. The unit looks like a regular
blank face GFCI except for some type of coil on the back that
several wires run through when it is installed.
Here's a picture:
http://spapartsnet.com/Electrical-P...1_0_4.html#main
Is that coil some type of current transformer? Or what? And what
might the purpose be?
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| Paul A 2007-06-27, 3:25 am |
| It appears very similar to a Leviton 8895. See spec sheet
http://stevenengineering.com/Tech_S...DFs/74OEML.pdf. page 4.
It is a current transformer. The GFCI monitors the current flow through the
conductors in the hole and trips if they are out of balance. Similar to a
regular GFCI except for heavier currents (50 Amps in this case), you route
them through the transformer, and you need a relay to control the circuit.
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| The Streets 2007-06-27, 9:25 am |
| "Paul A" <nospam@nospam.com> wrote in message
news:JLkgi.2489$YS.784@trnddc03...
> It appears very similar to a Leviton 8895. See spec sheet
> http://stevenengineering.com/Tech_S...DFs/74OEML.pdf. page 4.
>
> It is a current transformer. The GFCI monitors the current flow through
> the conductors in the hole and trips if they are out of balance. Similar
> to a regular GFCI except for heavier currents (50 Amps in this case), you
> route them through the transformer, and you need a relay to control the
> circuit.
That's it -- thanks for the reference.
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| Paul A wrote:
> It appears very similar to a Leviton 8895. See spec sheet
> http://stevenengineering.com/Tech_S...DFs/74OEML.pdf. page 4.
>
> It is a current transformer. The GFCI monitors the current flow through the
> conductors in the hole and trips if they are out of balance. Similar to a
> regular GFCI except for heavier currents (50 Amps in this case), you route
> them through the transformer, and you need a relay to control the circuit.
>
>
Nice!
That reply sets an example of how all of us ought to
operate: good content, a url *and* a page number at the
site so that others would see exactly what you had in mind.
Sometimes people give a url but don't identify what they are
referring to, so the reader has to hunt around and assume.
Ed
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| John Gilmer 2007-06-29, 1:25 pm |
|
"Paul A" <nospam@nospam.com> wrote in message
news:JLkgi.2489$YS.784@trnddc03...
> It appears very similar to a Leviton 8895. See spec sheet
> http://stevenengineering.com/Tech_S...DFs/74OEML.pdf. page 4.
>
> It is a current transformer. The GFCI monitors the current flow through
the
> conductors in the hole and trips if they are out of balance. Similar to a
> regular GFCI except for heavier currents (50 Amps in this case), you route
> them through the transformer, and you need a relay to control the circuit.
I take it, then, that this gadget controls the load through a
contactor/relay?
>
>
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| The Streets 2007-06-30, 9:25 am |
| "John Gilmer" <gilmer@nni.com> wrote in message
news:HKmdnUZDFroWvBjbnZ2dnUVZ_r6vnZ2d@nni.com...[color=darkred]
>
> "Paul A" <nospam@nospam.com> wrote in message
> news:JLkgi.2489$YS.784@trnddc03...
> the
>
> I take it, then, that this gadget controls the load through a
> contactor/relay?
In my case, yes.
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