Jump to content
  • Welcome Guest To Mopar1973Man.Com

    We are a Dodge Ram Cummins Turbo Diesel forum. We are very friendly and helpful group of Dodge Ram Cummins owners. We will try to keep your truck running the best we can and provide information for diagnostics, repairs and even guide you on the best replacement parts to use. 

     

    Registration is free. Registering on the site will provide access to many more things like...
     

    • Contribute to the Forum being able to ask questions and get support for your Dodge Ram Cummins.
    • Contribute to Article Database adding your ideas and suggestions.
    • Classified Ads posted by the members. Post up your used parts and vehicles.
    • Member Garage where you can proudly display your vehicles and modifications that you have done to them.
    • Download files, documents, and Quadzilla Adrenaline tunes for your truck.
    • 911 Support Network. We've got a group of members will to aid you if your truck breaks down on the road.
    • Reduced Advertisements displayed to you.

Mopar1973Man

Grid Heater & Alternator Diode Failure

Recommended Posts

Here is a tidbit I found that sheds a bit of light on the grid heater element.

https://goodsonengineering.com/wp-content/uploads/2017/08/FiresCausedbyFracturedResistanceHeatingElements.pdf

 

In Photo 1, we note that the coils (loops) of this element are relatively uniformly spaced. Such uniform spacing creates a relatively constant surface temperature for the element. At 240 VAC, with a fan blowing (as in actual use), surface temperatures were approximately 470 deg F when measured with a thermocouple. This temperature, however, will lessen as the heater element is used. A nominal 5000 watt heater will drop in wattage (and thus heat output) as a function of time. As with the lightbulb filament, the heater element becomes smaller in diameter over time. On the heater element, this reduction in cross-sectional area is due to oxidation. The smaller cross-sectional area increases resistance, which thus decreases wattage.

  • Like 1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



×