warwickhunt Posted May 26, 2012 Share Posted May 26, 2012 I've just taken delivery of a Warwick Hellborg Preamp. It was delivered from the States and set to 115v with a pair of fuses that are rated at T1AL 250v. I've reset the rear switch to 240v, however the preamp manual shows that the fuses should be T500mAL for 230V and T1AL for 115V. This has me confused as the fuses are defo stamped 250v yet should they not be 115v? I'm going to contact Warwick to see what the craic is and in the meantime try and find fuses of the correct rating but do I actually already own the correct fuse? The full story of the preamp acquisition is to follow. Cheers Quote Link to comment Share on other sites More sharing options...
Ou7shined Posted May 26, 2012 Share Posted May 26, 2012 The most important number is the amps rating as that's where it goes pop. Quote Link to comment Share on other sites More sharing options...
BILL POSTERS Posted May 26, 2012 Share Posted May 26, 2012 Theyre maximum ratings. Dont remember ever seeing a fuse marked anything other than 250V. Main thing is to limit the maximum current. Quote Link to comment Share on other sites More sharing options...
warwickhunt Posted May 26, 2012 Author Share Posted May 26, 2012 [quote name='BRANCINI' timestamp='1338023171' post='1668686'] Theyre maximum ratings. Dont remember ever seeing a fuse marked anything other than 250V. Main thing is to limit the maximum current. [/quote] As I say figures quoted are either straight out of the manual and the fuses supplied were with the preamp which had been used in The States. As it happens our local electronics supplier is open on a Saturday so I jumped in the car and 45 mins later I have the correct fuse... off to power it up! As a side note it's sad that not so long back there'd have been plenty of towns that had somewhere to buy such a fuse yet I had to go to a 'specialist'! Quote Link to comment Share on other sites More sharing options...
Warwick_Official Posted May 26, 2012 Share Posted May 26, 2012 Glad to hear you got it worked out. Please let me know if you have any other questions, or need clarification. Enjoy your Hellborg preamp! Quote Link to comment Share on other sites More sharing options...
warwickhunt Posted May 26, 2012 Author Share Posted May 26, 2012 [quote name='Warwick_Official' timestamp='1338027077' post='1668761'] Glad to hear you got it worked out. Please let me know if you have any other questions, or need clarification. Enjoy your Hellborg preamp! [/quote] Thanks Garey (replies over on the Warwick site also ). The preamp is fired up and working great. I was one of those who trialled it a couple of years ago so I'm familiar with it... now if you could do something about the import taxes that I paid for getting my winning a prize imported from The States, that'd be the ultimate! Quote Link to comment Share on other sites More sharing options...
Happy Jack Posted May 26, 2012 Share Posted May 26, 2012 [IMG]http://i1128.photobucket.com/albums/m496/h4ppyjack/Just%20Stuff/fusereplacement.jpg[/IMG] Quote Link to comment Share on other sites More sharing options...
warwickhunt Posted May 26, 2012 Author Share Posted May 26, 2012 I've seen a few amps in my time that had the liner out of fag packets wrapped around a blown fuse! Quote Link to comment Share on other sites More sharing options...
Matt P Posted May 26, 2012 Share Posted May 26, 2012 i once bought a car with fag paper round a fuse (never drove it very far though!) as another Newcastle based Bassist, which shop did you use for the fuse? just for future reference. Quote Link to comment Share on other sites More sharing options...
warwickhunt Posted May 26, 2012 Author Share Posted May 26, 2012 ESR in Whitley Bay, decent shop for all your electrical odds and ends. £3.12 for the correct fuse... 12p for the fuse but £3 for the petrol to get there and back! Quote Link to comment Share on other sites More sharing options...
Ou7shined Posted May 26, 2012 Share Posted May 26, 2012 [quote name='Ou7shined' timestamp='1338022935' post='1668682'] The most important number is the amps rating as that's where it goes pop. [/quote] I suppose I could have worded that better... I meant amperes. Quote Link to comment Share on other sites More sharing options...
Circle_of_Fifths Posted June 4, 2012 Share Posted June 4, 2012 (edited) ALL fuses on gear in the US are rated at 250Volts - at least the AC-house current types are. 125V fuses are usually automotive - not for the voltage which is really somewhere between 12VDC and 18VDC in a car/truck, but that's just the standard. It's the amperage that's important, well, that and the type of blow speed-timing value. Some are Slo-Blow (AGC & ATC types) and some are Timed (the T-types). Standard Blow fuses are either SFE or SCEs and there is even the old German GBC types here, but they are more rare these days. I'm not too sure if you have single phase current there, and if so, a 240 AC system will take 1/2 the Amperage per leg, so the fuses you might need are half the Amps and yet need to blow after a certain amount of overload is detected and then the open (blow). We use half the voltage here - it varies from 115/117VAC to 123VAC to 177VAC to 208, 213, 230, 288, etc - but those are specialized voltages. Most US homes have a twin-leg Single Phase ([size=3][color=#000000][font=sans-serif]Ø )[/font][/color][/size]115+115VAC 200 Amp service which gives 230VAC when both legs are combined. No US homes have 3[color=#000000][font=sans-serif][size=3]Ø [size=4]480VAC - it is an industrial standard. [/size][/size][/font][/color] Edited June 4, 2012 by Circle_of_Fifths Quote Link to comment Share on other sites More sharing options...
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