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Do They Make a 6A ATO/ATC Fuse?

Old 08-29-2011, 08:08 PM
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Default Do They Make a 6A ATO/ATC Fuse?

Here's my situation:

I'm building a dash for my electronics box, with a Blue Seas switched fuse panel for easy access. My VHF has an inline 6A glass fuse on the wiring, that I want to eliminate because of the new panel. Problem is, I can't seem to find a 6A blade fuse - only a 5A and a 7.5A. Do they make one?

That inline fuse holder will be very difficult to access once the dash is in (not impossible, but not easy on the water), so I want the Blue Seas to be the place to go first.

Any advice? Thanks in advance.

Here's a pic of the new dash if it helps:


Last edited by Chuckster; 08-29-2011 at 08:13 PM. Reason: Added Pic
Old 08-29-2011, 08:17 PM
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Originally Posted by Chuckster View Post
Here's my situation:

I'm building a dash for my electronics box, with a Blue Seas switched fuse panel for easy access. My VHF has an inline 6A glass fuse on the wiring, that I want to eliminate because of the new panel. Problem is, I can't seem to find a 6A blade fuse - only a 5A and a 7.5A. Do they make one?

That inline fuse holder will be very difficult to access once the dash is in (not impossible, but not easy on the water), so I want the Blue Seas to be the place to go first.

Any advice? Thanks in advance.

Here's a pic of the new dash if it helps:

Chuck,
Check the VHF manual under specs, see what the transmit draw is, chances are around 5.5 amps if they stuck a 6A in the fuse holder. Go with the 7.5A ATO...
Old 08-29-2011, 08:18 PM
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X2, what he said!
Old 08-30-2011, 05:00 AM
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Originally Posted by seabob4 View Post
Chuck,
Check the VHF manual under specs, see what the transmit draw is, chances are around 5.5 amps if they stuck a 6A in the fuse holder. Go with the 7.5A ATO...
I agree.
Old 08-30-2011, 02:14 PM
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Great, thanks for the advice guys...

Hey, one other related question:

In the picture, you can see I have a 12V accessory outlet next to my Droid, that will mostly be used for the phone charger, but may also be used for a plug-in spotlight with high candlepower. Any advice on what size fuse I should use there? Just check the amperage draw on the spotlight?

Thanks once again...
Old 08-30-2011, 02:56 PM
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Originally Posted by Chuckster View Post
Great, thanks for the advice guys...

Hey, one other related question:

In the picture, you can see I have a 12V accessory outlet next to my Droid, that will mostly be used for the phone charger, but may also be used for a plug-in spotlight with high candlepower. Any advice on what size fuse I should use there? Just check the amperage draw on the spotlight?

Thanks once again...
Don't check the amperage draw on the spotlight, check the maximum capacity rating of the outlet, size the wire for that or larger, and size the fuse or circuit breaker for the outlet.
Old 08-30-2011, 07:03 PM
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Gotcha... I bought it new on eBay and it didn't have any instructions or specs. I'll dig up the seller's name and shoot him an e-mail.

Thanks to all for the help - I appreciate it.
Old 08-31-2011, 06:55 AM
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Typically, 12V outlets are rated for 15As. 14GA wire to feed them should do you, I use 10.
Old 08-31-2011, 07:59 AM
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Originally Posted by seabob4 View Post
Typically, 12V outlets are rated for 15As. 14GA wire to feed them should do you, I use 10.

Yes, that's the belt and suspenders approach. Good policy.

Volltage-drop calculations are a pain in the ass, and in many cases, drop is more important than ampacity. Going two gauges larger adds mere pennies to the job, and eliminates any doubt about either drop or ampacity...not something Bayliner will do any time soon, but for aftermarket wiring, seems like a no-brainer to me.

Just use the super-fine stranded/tinned stuff..."type 3", I believe.
The only downside of the fine stranded stuff is that it is an incredible wick or sponge...adhesive shrink wrap mandatory at both ends.
Old 08-31-2011, 09:49 AM
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Thanks for everyone's help and patience - I'm a plumber, not an electrician (obviously).

OK, so for the outlet, here's my plan:
  • 10GA Ancor stranded wire
  • Ancor heat shrink crimp ring connectors
  • Additional heat shrink tubing over the top
  • all into a 15A ATC/ATO fuse

After I posted, the seller got back to me with the specs:
"Rated at 150 watts (12 amps) at 12 volts DC up to 15 amps peak."

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