Powered by Blogger.

Gary Bunzer has passed away

The family of Gary Bunzer, the RV Doctor, is saddened to report his passing on April 17, 2020. "We hope his website will continue to provide helpful information to his fans and readers," they wrote.

Friday, October 23, 2009

Converter Connections

Can (or should) the 12-volt negative wires at the Parallax converter station on the coach be grounded to the metal chassis of the RV? And won't this be a problem? I'm doing some remodeling on the electrical system and I noticed all the DC wires on a single lug block screwed to the wood of the floor. I thought this was odd.
Mike, (Boise, ID

Mike, yes, the 12-volt negative terminal block on every converter should be grounded to the same metal component as the negative cables on the batteries themselves, usually the vehicle frame. It does nothing, (but keep them in one place), to have them screwed to a wooden floor. In addition to the negative 12-volt conductors, the metal converter chassis should also be “bonded” to the frame using an 8-gauge conductor. This conductor may be uninsulated and it could also be a solid copper conductor. The negative 12-volt conductors, however, must be stranded. Now all that said, it is entirely possible that even though all the wires you see going to that single terminal strip are attached to the wood floor, one of them might actually go down to the frame, thereby making the connection and grounding those circuits. A simple continuity test with a VOM will confirm this.


In all instances, every effort is made to ensure the correctness of all content on the RV Doctor Website. It is imperative that if you choose to follow any instructions or procedures outlined on any page of this website, you must first satisfy yourself thoroughly that neither personal nor product safety will be compromised or jeopardized.

All rights reserved.

If you are in doubt or do not feel comfortable about a procedure, do not continue. Simply call your local RV service facility and make an appointment with them. The advice, recommendations and procedures offered by the RV Doctor are solely those of Gary. They do not necessarily reflect the opinions, procedures and recommendations of our sponsors or advertisers.