70 Amp alternator wiring

[mowogg]

I have obtained a good second had 70amp alternator from a 1.3 metro -can I fit this with a standard alternator wiring loom (obtained from Birmingham Morris Minor Centre) or do I need a larger power cable?

Thanks

[bmcecosse]

Why on earth would you need 70 amps ??????????? The answer is - NO - the main cables won't be heavy enough to take 70 amps. Just double the heavy cable up - then it will be fine! And do tell what you will do with 70 amps.......

[kennatt]

small electric oven maybe

[mowogg]

Firstly, it came at the right price.

Secondly I am considering fitting heated front and rear screens, along with other accessories would mean a standard one would be stretched on short journeys.

After all a 1300 metro is hardly covered in lots of electrical devices, and rover deemed it necessary

[IslipMinor]

The cable size you will need is at least 8.50mm or 120/0.30mm, but this is a real pig to run neatly as it is very unwieldy. What termination is on the new alternator? Screw post or push-on Lucar. Many Lucas alternators have 2 output terminals, both push-on 35A Lucar, so the easiest way is to run a smaller cable (half the size) from each terminal in parallel - in this case 2 x 4.5mm or 2 x 65/0.30mm. Brown cable in these sizes is commonly available from auto-electricians.

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[mowogg]

The alternator has two lucar terminals, and a screw terminal. I will run two cables as suggested.

Thanks