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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG TD TF 1500 - fuses

Parts list shows fuses 35 & 50 amp.
my TD fitted with 15 & 30 amp.
everything works... what am I missing.
TD29330
M Lees

20 amps :-)

You just might blow a fuse during some heavy operations such as driving with high beams, while using turn signals and applying the brakes. They are set up that way for some extra margin.

If it works for you and you have some spares, I would not sweat it.
Christopher Couper

Mike, it's a matter of semantics. Hang in there for a bit and I'm sure that one of the folks who has the answer will jump in here. Bud
Bud Krueger

Is there not a difference in the way the fuses in the UK are rated vs the US?

I think one is rated on the current it can carry safely (US) and the other is rated on the current it opens at.

So they may be the same.

"You say tomaeto. I say tomaato"

Jim B.
JA Benjamin

British Lucas Fuse American BUSS Fuse
Fast Blow Dual Rating~ Continuous (AGC) Alternate Opinion (SFE ?)
50 amp 25/50 amp ~ 25 amp 25 amp SFE
35 amp 17/35 amp ~ 17 amp 20 amp SFE
30 amp 15/30 amp ~ 15 amp 15 amp SFE (too short ?)
25 amp 12/25 amp ~ 12 amp 15 amp SFE (too short ?)
20 amp 10/20 amp ~ 10 amp
15 amp 7.5/15 amp ~ 8 amp
10 amp 5 /10 amp ~ 5 amp
5 amp 2.5 / 5 amp ~ _____ 3 amp
2 amp 1 / 2 amp ~ 1 amp

Unfortunately, there’s no extra data marked on either the fuse body or on the package to tip-off the user that the ratings are different. It’s very important that USA owners of British cars be aware of the issue and make wise choices when using USA fuses in them. The best choice is to make the effort to source proper British fuses for your LBC. In an emergency, the loose Rule of Thumb is to use a USA BUSS fuse with an Amp rating equal to no more than one half of the British Lucas fuse rating.

From somewhere on the internet. George
George Butz

Well, the columns got messed up with copy/paste, should be Left- British, left center- continuous/fast blow, next to right- US rating, and then the far right is "optional".
George Butz

I'm seriously considering a fuse block under the dash that will allow separation of the individual loads. I've seen a schematic for this somewhere.

Not only is this safer than tying everything through two fuses but this way if the wiper wire fries the headlights (etc.) still work and you can get home.

The original on the firewall will be left just for show.
MAndrus

It's a good idea, Mandrus; along with using relays to take the load off some of the switches. And yes, I think a few people have posted their schematics and photos of their fuse blocks.
Geoffrey M Baker

Here is one, fairly detailed, fuse block install.

http://tseriesmg.blogspot.com/2006/11/mg-td-auxiliary-fuse-panel.html


Jim B.
JA Benjamin

Jim B, that's the one I've seen.

BTW, I came to NC from Stirling, NJ near Basking Ridge. What exit are you at?
MAndrus

George is mostly correct.
The British fuse rating is based on the maximum current the fuse can handle before it blows.
The US fuse rating is based on the current it can safely carry under normal situations and will blow at something higher than that.
Thus, to be safe, if the British fuse shows 35 Amps as its rating, the equivalent US fuse should be rated at around 17 Amps.
Take the British rating and if you need to replace it with a US fuse, it should be roughly half the value.
Otherwise you risk letting the smoke escape.
LD Palmer

Great feedback,thanks to all
M Lees

>
>BTW, I came to NC from Stirling, NJ near Basking >Ridge. What exit are you at?
>

I am in Verona, North Jersey, North of the GSP.

Jim B.
JA Benjamin

This thread was discussed between 03/02/2015 and 04/02/2015

MG TD TF 1500 index

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