BASIC NEC CODE RULES AND DESIGN PRACTICE

150 1/0 120. 175 2/0 140. 200 3/0 160 . 225 4/0 180 ... The service entrance is the most expensive part of the electrical system to replace. ... The ampacity of the service entrance conductors should be sized for the total capacity of the building's power panels. For example, two 200 amp panels should have a 400 amp service to allow for added ... ................
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