Supply line sizing

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Jimongee

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Ok folks,
I've asked so many questions that I feel like ya'll are building my home!! But OMG thanks for all the info...very helpful. As I am not in process of installing PEX I have brought a 1" supply line in from the meter to the tank. Then my plan was using 3/4" for my main supply trunk lines and then 1/2" for all the branches. Here's my question; should I run 3/4 instead of 1/2 to the bathtub and showere for faster fill and more volume...or does it not make a difference? Thanks
 
Frodo
Ok just to make sure you did mean 3/4 to all fixtures or just the tub and shower.
Thanks for your expertise
 
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