There is a fixture load table you have to follow, depending on the amount of toilets tubs sinks etc, also single story , 2 – 3 floors, and depending what code your under. Pipe sizing, each fixture has a load factor add them up and you get the required main water service size needed to supply the home.

 

Has anyone here ever even heard of a 5/8 pipe size. I know I have not.
3/4, 1" yes 5/8 no.
It's not even on the NPT thread charts.

 

5/8" would more likely be found in an old refrigiration system where they measure o.d of pipe which would be 5/8 o.d = 1/2" i.d tubing.
Anyway the smallest tap weve been able to get around here for a new service has been for 1" copper for the past few years

 

I think what he meant was the size of the water meter most residential meters are 5/8 its stamped on the meters, that’s where he got the 5/8 from.

 

yes 5/8 is the size of meter tail piece...if you use a standard 3/4 copper you should be fine under normal conditions....as mentioned how much is load...:yes:

 

Yea 5/8 is the size of the water meter and the inside is 3/4 inch ........right now I have 3 bathrooms but even if the load is fine with the 3/4 inch service line I want to know if the 1 inch line would be better or if it would hurt my pressure

 

it should not hurt your pressure by installing 1" you would increase your volume...:yes: so really it would be better as you are thinking...

 

Ok I will be running the 1 inch service line this weekend ,, it will be flexible copper grade (K) ....I'm also going to sleeve it with a 1 1/2 sleeve I will be taking pictures to share this project with you guys.

 

5/8 Is the size of the water meter for does of you who are confuse just think of it like the inside is 3/4

 

Well there is the service line ,1 inch flexible copper with a 1 1/2 sleeve so far so good the line in a foot deep no major problems tomorrow I'm running the plumbing in the house