Basement Finish. Sub Panel or no?
I am finishing my basement and am trying to decide how to handle the electric service for the basement. The builder was kind enough to supply the blue flexible conduit from the main to the basement. After thinking it over I believe I have 2 choices.
Either run all the circuits through the conduit to the main panel or run a sub panel. I have enough slots in the main panel to add all the circuits I need.
My main panel is 100 amp, and is in the garage with the mentioned conduit. It wouldnÂt be difficult to get another conduit through if need be.
The circuits I will have in the basement are as follows
*#1 Bar Microwave GFI 20A with 12-2 wire 1 outlet
*#2 Bathroom GFI 20A with 12-2 wire 2 outlet 1 fan 1 lg can light 3 small can lights
*#3 Bar GFI 20A 12-2 wire 5 outlet
#4 AF Bedroom outlets 20A 12-2 wire 7 outlet
#5 AF Bedroom/Fam Room lights 15A 14-2 wire 1 std light 8 lg can lights
*#6 Main Lighting 15A 14-2 Wire 2 lg can lights 3 small can lights 3 std lights
*#7 Main Outlets 15A 14-2 Wire 8 outlet
The location for the sub panel that makes the most sense is in furnace room approx 65 feet away from the main panel, (by most sense I mean easiest to get code clearance, and central to 5 of the 7 circuits. * Starred circuits are central to the proposed sub panel.)
I wouldnÂt be honest if I didnÂt say I wasnÂt on a budget here so I guess cost is 70-80% of driving force, and 20-30% is convenience of installation.
What I have been told is that I would use a 100amp sub panel and set it up for 50 amps. I have also been told I can use Alum #6-4 SER to make the run between my 100amp main and my 50 amp sub. However I have had some arguments come up that at 65ft of cable run I loose too much power to give 50 service at the sub. I know copper is easier to use but remember IÂm on a budget and from what I see the copper choice is approx 3x more expensive and seems to price me out of the sub panel choice.
I am open for suggestions.. Please tell me if this was you doing the job, which choice would you make and why and what cable you would use between the main and sub. Also let me know if you see flaws in the logic IÂm using here for the circuits etc..
Thank you so much for all the help.. Matt