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#### RTorres

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I have a couple questions based on this motor diagram from the OESC section 28, I am struggling with the calculations

1. What size and type of copper conductor is required for this motor?
- so far i have 200% for continuous duty.

2. What is the maximum calculated value of trip setting for the overload relays?

3. What is the maximum calculated value of fuses allowed for over load protection?

Please provide code reference and explanation as well.
Thankyou

#### dronai

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Are you an electrician ?

#### RTorres

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No, i am in a pre-apprenticeship program

#### wcord

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##### Electrical Contractor
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5,504 Posts
I have a couple questions based on this motor diagram from the OESC section 28, I am struggling with the calculations

1. What size and type of copper conductor is required for this motor?
- so far i have 200% for continuous duty.

2. What is the maximum calculated value of trip setting for the overload relays?

3. What is the maximum calculated value of fuses allowed for over load protection?

Please provide code reference and explanation as well.
Thankyou
Rules 28-106, 28-200, and 28-208 and Table D16

RTorres

#### RTorres

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Thank you

#### wcord

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##### Electrical Contractor
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Thank you
No problem.
When you start to look up your rules, remember the appendixes and tables in the back. A good resource
Good luck on your pre-apprentice studies

#### CheapCharlie

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Here's what I get:

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#### HARRY304E

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No, i am in a pre-apprenticeship program
Good luck an welcome to the forum.:thumbsup:

#### kaboler

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This is pre-apprenticeship? Youch!!!!!

#### Mike_586

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Rules 28-106, 28-200, and 28-208 and Table D16
I'll add that looking in Apendix B there's a really good diagram that shows where a number of code rules apply. It can really help you visualize and understand where and why the rules are applied.

#### RTorres

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Thanks you I appreciate it.

1 - 12 of 12 Posts