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Fuses... Will any do?

Started by ThePowster, Apr 02, 2023, 10:48 AM

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ThePowster

Hey guys.

OK so part of sorting out my new Nighthawk I wanted to replace the fuses on the handlebars.

There are 3 x 15 amp and 3 x 10 amp fuses.

I bought these:

https://www.amazon.co.uk/dp/B07XNPJTZN?psc=1&ref=ppx_yo2ov_dt_b_product_details

M6 x 30mm glass fuses.

My question is, are these ok to use on the Nighthawk? They are stamped with 250v which confused me. I wasn't sure if that meant they are good for 250v before they pop, or if it meant they are too much for the Nighthawk, or even if they are not for automotive application, so I just wanted to ask to make sure.

Thanks in advance :)

• 1984 Honda CB700SC Nighthawk S •

mollusc

Fuses blow based on current, not voltage.  Those are fine.
Your bike also has a 40A "dogbone" fuse down by the starter solenoid.  It will sometimes develop hairline cracks that cause intermittent power to all systems on the bike.  Aftermarket fixes are available that use newer blade-style fuses though.
2015 Triumph Tiger Explorer ABS
1984 Honda Nighthawk 700S
2012 Honda NC700X
2005 Vespa GT200
1982 Yamaha Maxim 550 (sold)
2006 BMW R850R (sold)
1981 Honda CX500B (sold)

Larry Fine

#2
Quote from: ThePowster on Apr 02, 2023, 10:48 AMMy question is, are these ok to use on the Nighthawk? They are stamped with 250v which confused me. I wasn't sure if that meant they are good for 250v before they pop, or if it meant they are too much for the Nighthawk, or even if they are not for automotive application, so I just wanted to ask to make sure.
That's the maximum voltage the fuse is rated to safely interrupt. However, automotive fuses are usually rated at 32v, but have a thicker element except in the middle.

They are made to introduce less voltage drop, which is more detrimental at lower voltages, because of the higher current for a given power.

 
'72 CL450
'73 CB750
'82 CB750SC

'96 CB750ST
'01 ST1100
'96 ST1100
'07 ST1300

ThePowster

Hey guys.

Thanks a lot for the knowledge and education, really appreciate it  :)
• 1984 Honda CB700SC Nighthawk S •