I believe you're referring to a deduction related to a 1 1/2 EMT (Electrical Metallic Tubing) conduit. Unfortunately, without more context, it's impossible to definitively explain what a "90 deduction" means. This phrase is not standard terminology in the electrical or construction industries. To understand this deduction, we need more information. A "90" likely refers to a 90-degree bend in the EMT conduit, but the "deduction" part requires clarification.
To help me understand and answer your question, please provide additional context, such as:
- What is the specific calculation or context in which this deduction is being used? Is this related to calculating conduit length, material costs, labor estimations, or something else?
- What is the overall purpose of the calculation? Are you trying to determine the total length of conduit needed for a project? Are you calculating costs?
- Can you provide the complete problem or equation? This will help me understand the full context.
- What is the source of this information? Knowing where you encountered this phrase (e.g., a textbook, a manual, a website) will help identify the specific methodology being used.
With more details, I can provide a more precise and helpful explanation. Understanding the context of the 1 1/2 EMT conduit and the "90 deduction" is crucial for providing a meaningful response.
