Electrical wire gauge?

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Easylife
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I'm guessing that this is some sort of electrical wire gauge but I cannot relate the sizes to ampages. Nor what 'Amp T' is? Does anyone know because Google doesn't seem to?
IMG_20210513_102817.jpg
D2 - 13"x11" coil - audio only.
Pete E
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Easylife wrote: Thu May 13, 2021 10:33 am I'm guessing that this is some sort of electrical wire gauge but I cannot relate the sizes to ampages. Nor what 'Amp T' is? Does anyone know because Google doesn't seem to?

IMG_20210513_102817.jpg
I am guessing that "t" stands for twisted ie for multi stranded conductors, where as holes without the "t" are for single stranded conductor...It looks like a guage more applicable to an industrial electrician....
stanslad
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It’s an old cartridge fuse size gauge, the old fuses were sometimes the same colour but different width sizes & often the markings on them were rubbed off or hard to see, this gauge would assure you have the correct size,
T means Thermal, a slow blow fuse that was used for high surge equipment & they were slightly narrower & the wire inside would slowly melt, unlike the other normal fuses which were thicker to contain the explosive effect of the internal wire blowing.
Clint :thumbsup:
Dave The Slave
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Different and interesting.
Was wondering what it was in your bottle dump post and now i know.
Cheers, :thumbsup:
Dave.
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HolzHammer
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stanslad wrote: Thu May 13, 2021 1:10 pm It’s an old cartridge fuse size gauge, the old fuses were sometimes the same colour but different width sizes & often the markings on them were rubbed off or hard to see, this gauge would assure you have the correct size,
T means Thermal, a slow blow fuse that was used for high surge equipment & they were slightly narrower & the wire inside would slowly melt, unlike the other normal fuses which were thicker to contain the explosive effect of the internal wire blowing.
Clint :thumbsup:
good knowledge!!!! 👏
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