Jea48, thanks for all your input. It is really valuable to me as I lack personal expertise in this area. Here are some answers to your questions:
1. Soil and Moisture - As my user name implies, I live in the Cincinnati, Ohio area. Our soil in this area involves a lot of clay. We tend to have normal midwestern weather with a fair amount of precipitation yearound but occasional droughts in the summer months. Let me know if additional information would be helpful in this area.
2. Isolation Transformer - My isolation transfomer is an MGE Topaz isolation transformer that is described in the following web link:
MGE Topaz 100 Installation and User Manual
This web link will lauch a pdf file that contains the full user manual for my isolation transformer. The specifications for the unit are contained on page 11 of the document. My unit is model no. T-100H-7500. It is a hardwired 7.5kVA transformer (see pg. 12 for the specifications of the various model numbers).
The unit provides 140dB of common mode noise attenuation and 65dB of normal mode noise attenuation. I believe the transformer also provides the electrostatic shielding that you mentioned in your latest post.
By the way, my use of the word, "taps," simply shows my inexperience with the subject matter. I had no technical basis for the use of that term.
Based on the advice in your latest post, it sounds like I should use the transformer to step down the 240V primary voltage to 120V at the output stage.
It would be a lot of help to me if you would explain a bit more to me about the primary and secondary grounding electrodes in my system. If I understand your posts to date, you are suggesting that, to comply with code and safety standards, the grounding electrode on the primary stage of the isolation transformer must be tied back to the grounding system at my main electric panel in my house (i.e., the clamp that is attached to my water pipe service where the service enters my house).
When you refer to the secondary grounding electrode, are you referring to a second ground connection from the secondary side of the isolation transformer? Did I understand your first post in this thread to suggest that it is best to have a ground for this secondary side of the transformer that is independent of the water pipe ground that is used as the primary ground for my electric system? I have seen a lot of cautionary advice about the use of two separate grounds within an electric system. The cautionary advice seems to say that it is never acceptable to have two separate grounding systems for two parts of an electrical system. Can you clarify this part for me?
1. Soil and Moisture - As my user name implies, I live in the Cincinnati, Ohio area. Our soil in this area involves a lot of clay. We tend to have normal midwestern weather with a fair amount of precipitation yearound but occasional droughts in the summer months. Let me know if additional information would be helpful in this area.
2. Isolation Transformer - My isolation transfomer is an MGE Topaz isolation transformer that is described in the following web link:
MGE Topaz 100 Installation and User Manual
This web link will lauch a pdf file that contains the full user manual for my isolation transformer. The specifications for the unit are contained on page 11 of the document. My unit is model no. T-100H-7500. It is a hardwired 7.5kVA transformer (see pg. 12 for the specifications of the various model numbers).
The unit provides 140dB of common mode noise attenuation and 65dB of normal mode noise attenuation. I believe the transformer also provides the electrostatic shielding that you mentioned in your latest post.
By the way, my use of the word, "taps," simply shows my inexperience with the subject matter. I had no technical basis for the use of that term.
Based on the advice in your latest post, it sounds like I should use the transformer to step down the 240V primary voltage to 120V at the output stage.
It would be a lot of help to me if you would explain a bit more to me about the primary and secondary grounding electrodes in my system. If I understand your posts to date, you are suggesting that, to comply with code and safety standards, the grounding electrode on the primary stage of the isolation transformer must be tied back to the grounding system at my main electric panel in my house (i.e., the clamp that is attached to my water pipe service where the service enters my house).
When you refer to the secondary grounding electrode, are you referring to a second ground connection from the secondary side of the isolation transformer? Did I understand your first post in this thread to suggest that it is best to have a ground for this secondary side of the transformer that is independent of the water pipe ground that is used as the primary ground for my electric system? I have seen a lot of cautionary advice about the use of two separate grounds within an electric system. The cautionary advice seems to say that it is never acceptable to have two separate grounding systems for two parts of an electrical system. Can you clarify this part for me?