Is my 100A sufficient?
#1
Member
Thread Starter
Join Date: Dec 2013
Posts: 284
Received 0 Votes
on
0 Posts
Is my 100A sufficient?
I would like to add two, 20A 120 circuits to my system. But I wanted to be sure my 100A is sufficient.
2000 SQ FT' ranch.
100A main
with 16 circuits including
gas furnace
25A air conditioner
30A electric dryer
a 40A 240 for garage subpanel that has 2 20A circuits-- only load on it is the GDO.
20A laundry
2 small appliance circuits for kitchen
Dishwasher 20A
Sump Pump 20A
6 15A circuits for rooms.
What other information is necessary for an accurate measurement?
How much can I safely add to my panel?
2000 SQ FT' ranch.
100A main
with 16 circuits including
gas furnace
25A air conditioner
30A electric dryer
a 40A 240 for garage subpanel that has 2 20A circuits-- only load on it is the GDO.
20A laundry
2 small appliance circuits for kitchen
Dishwasher 20A
Sump Pump 20A
6 15A circuits for rooms.
What other information is necessary for an accurate measurement?
How much can I safely add to my panel?
#2
I would like to add two, 20A 120 circuits to my system. But I wanted to be sure my 100A is sufficient.
#4
#5
Member
Thread Starter
Join Date: Dec 2013
Posts: 284
Received 0 Votes
on
0 Posts
Thanks Ray. I tried using the calculator you suggested but I am uncertain if what I computed was correct. The VA vs. A etc threw me off.
I think I was getting 69A. That kind of has me concerned? I probably shouldn't be adding circuits in this case? I want to have one circuit for water heater fan and another circuit for general use. Is there a percentage of 100a your supposed to stay at for that size service?
I also noticed on the calc they don't ask about lighting and they don't ask about electronics.
I think I was getting 69A. That kind of has me concerned? I probably shouldn't be adding circuits in this case? I want to have one circuit for water heater fan and another circuit for general use. Is there a percentage of 100a your supposed to stay at for that size service?
I also noticed on the calc they don't ask about lighting and they don't ask about electronics.
#8
The lighting is covered under the 3 va per square foot.
The fan will use almost nothing. The general use receptacles will only have a load when you are using something.
The fan will use almost nothing. The general use receptacles will only have a load when you are using something.
#9
Member
Join Date: Jan 2014
Location: USA
Posts: 699
Received 0 Votes
on
0 Posts
100 amp service is kind of skimpy for a 2000 sq ft house , with gas heat and gas cooking . However 25 amp A/C is a little smaller than I am use to seeing .
100 amp main circuit breaker ?
GDO - garage door opener ? Pulls almost nothing , except when you are opening or closing the garage door .
Do you presently see the lights flicker when the dryer or the A/C kick on ? ( Hint , run the dryer at night when the A/C is running less . )
Sump pump ? You have a basement ? Again , it pulls nothing , except when it is running .
Just a long distance guess , if you never see the lights dim , you can probably get buy with the 2 new circuits . You have 2 available spaces in the loadcenter ?
God bless
Wyr
100 amp main circuit breaker ?
GDO - garage door opener ? Pulls almost nothing , except when you are opening or closing the garage door .
Do you presently see the lights flicker when the dryer or the A/C kick on ? ( Hint , run the dryer at night when the A/C is running less . )
Sump pump ? You have a basement ? Again , it pulls nothing , except when it is running .
Just a long distance guess , if you never see the lights dim , you can probably get buy with the 2 new circuits . You have 2 available spaces in the loadcenter ?
God bless
Wyr
#10
Member
Thread Starter
Join Date: Dec 2013
Posts: 284
Received 0 Votes
on
0 Posts
Actually its 1400 sq ft.
So essentially its a 30A dryer. 25A AC. 1/2HP sump. 2 small appliance circuits. 1 laundry circuit.
So when approaching 70-80 is it not a good idea to push it further?
I have 5 available slots in my 24 slot panel.
So essentially its a 30A dryer. 25A AC. 1/2HP sump. 2 small appliance circuits. 1 laundry circuit.
So when approaching 70-80 is it not a good idea to push it further?
I have 5 available slots in my 24 slot panel.