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How do I determine the fuse current rating for a new amp?

I just finished building an amp and it blew the fuse I had installed. The amp has 8 el84 tubes in PPP with 3 12ax7 for the driver/splitter and 2 5v4 rectifier tubes.
At the start of the build I just used a 3A fuse as a reasonable value. But after a total of maybe 50 hours of play it just blew the 3 amp fuse after about 4 hours of continuous use. I am thinking my fuse is too low in amperage so I was wondering what factors I need to know in order to make a good choice for fuse rating. Thanx in advance and best regards, Dak


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Topic - How do I determine the fuse current rating for a new amp? - DAK 13:34:33 08/01/15 (12)

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