Just a point of information...a fuse or circuit breaker will NOT and is not
intended to prevent electrical shock. Ground Fault Circuit Interrupter
protection will! Fuses, breakers and other OCPD's are intended to protect
wiring and, in some cases, utilization equipment.
73
Don
WB2BEZ
In a message dated 2/1/2016 6:49:50 P.M. Eastern Standard Time,
w0ivj@tomthompson.com writes:
Jim,
This choke is on the *Lamp *side of the ballast, not on the *Line *side,
so it is unclear what a short circuit among any of the wires on the Lamp
side will do. It largely depends on the ballast circuitry.
Tom
On 2/1/2016 2:58 PM, Jim Brown wrote:
> On Mon,2/1/2016 1:19 PM, Tom Thompson wrote:
>> I respectfully disagree. The choke in the green wire and the common
>> mode choke both are 300uH. A short circuit current between the hot
>> and the green wire would pass through both chokes in series. At 60 Hz
>> the total impedance is 0.2 ohms which is not going to affect the
>> breaker or fuse blowing.
>
> But it's NOT 60 Hz, it's an impulse. And if the choke is effective at
> killing RFI, it's got significant resistive impedance at the
> frequencies of that impulse.
>
> The question is not WILL it blow the fuse/breaker, but will it blow
> FAST ENOUGH to protect someone from electrical shock.
>
> 73, Jim
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
>
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|