From: arl_123234@hotmail.com
On 11/24/2014 12:50 PM, Rich. wrote:
>
> "J.B. Wood" wrote in message
> news:m4vnvn$fhl$1@ra.nrl.navy.mil...
>> On 11/24/2014 10:04 AM, Rich. wrote:
>>>
>>> "J.B. Wood" wrote in message
>>> news:m4vect$fcc$1@ra.nrl.navy.mil...
>>>> Hello, all, and a fuse question for a practicing electrician (or
>>>> anyone in the know):
>>>>
>>>> Assuming a residential branch circuit is fused for 125 volts, 30 amps
>>>> and the fuse box accepts the rejection base ("S") fuse, how
>>>> interchangeable are the 30 amp "D" dual element time delay (has the
>>>> spring loading) and the 30 amp "SL" time delay types? Thanks for your
>>>> time and comment. Sincerely,
>>>> --
>>>> J. B. Wood e-mail: arl_123234@hotmail.com
>>>
>>>
>>> The fuses themselves are identical in their operation. The only
>>> difference is the Type D screws into the standard Edison base fuse
>>> holder, while the SL fuse needs the base adapter screwed into the Edison
>>> base first, then the fuse screws into the adapter.
>>>
>> Hello, and many thanks for the prompt reply. Unless I'm mistaken, the
>> types of plug fuses that I referred to have identical footprints;
>> i.e., they are both rejection base types. Either one could presumably
>> be screwed into the 30-amp rejection receptacle in the fuse box.
>> (There is a type D TC fuse with an Edison base but that's not the one
>> I meant)
>>
>> So the question seems to be the difference between having or not
>> having the "dual" time delay capability. Sincerely,
>>
>> --
>> J. B. Wood e-mail: arl_123234@hotmail.com
>
> Time delay fuses with the spring blow faster than dual element fuses. Is
> that what you're looking to find out?
>
Hello, and I think that might be backward. The dual element type seems
to have the spring. Sincerely,
--
J. B. Wood e-mail: arl_123234@hotmail.com
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