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#64152 - 03/31/06 10:12 PM fuse rejectors
Sixer Offline
Member

Registered: 08/08/05
Posts: 264
Loc: Canada
Why do they make fuse rejectors for 30 amp plug fuses, when a 30 amp plug fuse is the biggest they make? I thought the rejectors were so you couldn't increase the size of the fuse, but maybe I'm missing something here?
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#64153 - 03/31/06 11:48 PM Re: fuse rejectors
e57 Offline
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Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
They reject different fuse types as well.
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#64154 - 04/01/06 01:47 AM Re: fuse rejectors
Trumpy Offline

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Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
Define the term "rejector"?.
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#64155 - 04/01/06 02:46 AM Re: fuse rejectors
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
Mike you can find info here

http://www.littelfuse.com/cgi-bin/r.cgi/en/prod_series.html?SeriesID=129&LFSESSION=pkqP0Dgxlf

Older fuse holders in American homes could accept a fuse from 15 to 30 amps.

Many times the homeowners would replace the 15 and 20s with 30s.

So now we screw in a permanent adapter that allows only the correct size fuse replacement.
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#64156 - 04/01/06 07:12 AM Re: fuse rejectors
Rewired Offline
Member

Registered: 01/01/06
Posts: 567
Loc: Hamilton, Ontario, Canada
I was wondering what you meant when you said a " 30 amp rejector"!
I have never really seen those " Type S" fuses around here... The only one I think I have actually seen was at my old work in the fuse isle buried under a mound of dust!
The " Rejectors" I know of were plastic rings of either the 15 or 20 amp version that you screwed into your panel with a special fiber tool...The 15's would only allow a 15A fuse in but the 20A rejectors would allow a 15 or 20A fuse to be inserted... They worked but I sometimes had problems with them when using some brands of type "D" fuse of the correct rating, the rejectors rejected them too!

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#64157 - 04/01/06 11:21 AM Re: fuse rejectors
Sixer Offline
Member

Registered: 08/08/05
Posts: 264
Loc: Canada
Rewire, I know of the rejectors you are talking about, but those are different. I haven't seen those in years.

The ones I'm talking about take the type S fuses that Iwire has linked to. This is the only picture I could find of the adaptor: http://www.hvactool.com/product_images/MA-16SA.gif
The little wire sticking out the side of the threads make it tamper resistant.

My reason for this post is lately we've been installing a lot of these rejectors (adaptors) and type S fuses to satisfy the insurance companies requirements. I couldn't figure out why they even made one for 30 amps, but e57 answered my question (duh...I never even thought of that!)....thanks.
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#64158 - 04/01/06 01:36 PM Re: fuse rejectors
jwhite Offline
Member

Registered: 12/01/05
Posts: 67
Loc: Trenton, NC, USA
They used to make a 35 amp edison base fuse.

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#64159 - 04/01/06 07:41 PM Re: fuse rejectors
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9045
Loc: Estero,Fl,usa
The S adapter also rejects pennies, gum wrappers and aluminum foil ... even the 30.
The 30a adapter will take a 20 (same thread size) but the 20 won't take a 30. There is a shoulder on the 30a fuse that keeps it from fitting in a 20a adapter.
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