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Author Topic: Model T fuse  (Read 210 times)

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Bava Choco

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Model T fuse
« on: July 22, 2019, 07:19:48 pm »

Hi Y'all,

Can anyone tell me the specs on your Model T mains fuse?  Thanks!!!

loudthud

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Re: Model T fuse
« Reply #1 on: July 22, 2019, 07:46:19 pm »

The 70's Model T didn't have a fuse, it had a push button circuit breaker. The circuit breakers eventually fail and are replaced with a fuse because the circuit breakers are somewhat difficult to find. For 120V North American mains, a 5 Amp slow blow will probably work. You need to find one that fits the fuse holder. Remember, the job of a fuse is not to protect the amp, it's job is to protect the house from burning down because the amp died.

Bava Choco

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Re: Model T fuse
« Reply #2 on: July 23, 2019, 11:46:55 am »

Thanks, no circuit breaker in this old fella.  I found another Model T owner that uses 7A 250v slow blow fuses with no issues.  I ordered an assortment to try--5, 6.25, 7.

Isaac

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Re: Model T fuse
« Reply #3 on: July 24, 2019, 09:47:26 am »

A fuse or circuit breaker that is too large will not cause a problem. However, when a problem occurs, it won't savethe amp, or your house. Ideally, the interrupting device should be as small as possible without interfering with operation.

This schematic calls for a 7 amp circuit breaker.

https://music-electronics-forum.com/attachment.php?attachmentid=25674&d=1381533140
Isaac