![]() ![]() Over the coming days, I will wire up, including a 10amp fuse, switch on, and measure, but first I will need to source an infra red temperature gauge. I have sourced a spare operational OD unit, a 12 v battery, a 5 amp Lucas switch and some ss plate to simulate the heat sink effect of a Healey’s dashboard in my workshop (which my wife refers to as a “kitchen”). ![]() However, I now have the wherewithal to test my hypothesis. I note that one Joule of energy is equivalent to raising a good sized tomato (approx 100g) through 1 metre. So, my contention is that in running 1 amp through a Lucas 5amp rated switch, the switch would heat up to the point where the energy input equals energy lost, which will be well below burning one’s fingers. If there is no heat loss, the switch would continue to heat up. Of course, for our switch analogy, we need to know the heat loss through convection and conduction from the switch. “Joule Heating” is a function of the materials Resistance, mass and Specific heat capacity. Feb 06 Home From Paint And Building P.Sep 30 MDMGs On The Rocks British Car.Sep 23 NCBCCWNC Autumn In The Mountains.Sep 21 NCSoutheastern Austin-Healey Cl.Sep 16 DEBCCD Annual Fall Car & Motorc.Sep 09 ORWest Coast Sprite Midget Chal.Sep 03 NYAutumn Sports Classic Super C.Aug 27 NYMGCC Sports Car & Auto Festival. ![]()
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