(Note:
If for some strange reason you decide to see if everything adds up,
don't bother.
You
won't get the same results as in the "Total Loads" below
because the calculation
for
those totals is not a simple addition of the circuits.)
200 Amp Distribution Panel Layout: Non-Lighting Circuits
|
Amps |
Use |
Circuit # |
Use |
Amps |
|
|
6.0 |
Basement electronics recepts |
1 |
2 |
Bedroom 2 / Bath recepts |
10.5 |
|
12.0 |
Garage / Attic / CCTV / recepts |
3 |
4 |
Library / Foyer Shelf recepts |
10.5 |
|
9.0 |
Basement / Walk-Out recepts |
5 |
6 |
Loft recepts |
9.0 |
|
4.5 |
Laundry Room / Garage Freezer recepts |
7 |
8 |
Deck recepts |
4.5 |
|
6.0 |
Kitchen Breakfast Nook recepts |
9 |
10 |
Boiler |
6.0 |
|
12.5 |
Kitchen counter east recepts |
11 |
12 |
Washer / Dryer recept |
12.5 |
|
12.5 |
Kitchen counter west recepts |
13 |
14 |
Dishwasher recept |
10.0 |
|
15.5 |
Kitchen Island recepts |
15 |
16 |
Refrigerator recept |
6.0 |
|
14.0 |
Music Room / Living Room AV recepts |
17 |
18 |
Electric Panel recept |
1.5 |
|
7.5 |
Music Room recepts |
19 |
20 |
Oven recept |
12.0 |
|
9.0 |
Living Room / Kitchen Desk recepts |
21 |
22 |
Oven recept |
12.0 |
|
6.0 |
Master Bath recepts |
23 |
24 |
Well pump |
5.0 |
|
12.0 |
Master Bath Whirlpool recept |
25 |
26 |
Well pump |
5.0 |
|
12.0 |
Master Bedroom / Hallway recepts |
27 |
28 |
Blank |
-- |
|
-- |
Blank |
29 |
30 |
Blank |
-- |
|
-- |
Blank |
31 |
32 |
Blank |
-- |
|
-- |
Blank |
33 |
34 |
Blank |
-- |
|
-- |
Blank |
35 |
36 |
Blank |
-- |
|
-- |
Blank |
37 |
38 |
Blank |
-- |
|
-- |
Blank |
39 |
40 |
Blank |
-- |
100 Amp Distribution Panel Layout: Lighting Circuits
|
Amps |
Use |
Circuit # |
Use |
Amps |
|
|
7.6 |
Garage / Attic / Driveway door opener recepts & lights |
1 |
2 |
Bedroom 2 fan & light |
1.5 |
|
5.2 |
Basement / Walk-Out lights |
3 |
4 |
Bath fan & lights |
3.0 |
|
3.3 |
Powder recept, fan & lights |
5 |
6 |
Library fan & lights |
4.6 |
|
9.8 |
Kitchen range hood & fan & Entry / Laundry lights |
7 |
8 |
Foyer lights |
4.1 |
|
9.8 |
Living Room / Music Room fans & lights |
9 |
10 |
Deck lights |
3.3 |
|
7.6 |
Master Bath / exhaust fans / lights |
11 |
12 |
Attic recepts & lights |
6.8 |
|
4.9 |
Master Bedroom / Hallway / Loft fans & lights |
13 |
14 |
Porch / Driveway recepts & lights |
10.1 |
|
-- |
Blank |
15 |
16 |
Blank |
-- |
|
-- |
Blank |
17 |
18 |
Blank |
-- |
|
-- |
Blank |
19 |
20 |
Blank |
-- |
Total Loads
|
Panel Totals: |
Non-Lighting |
Lighting |
Totals |
|
Amps Phase A |
122.5 |
40.9 |
163.4 |
|
Amps Phase B |
120.5 |
40.7 |
161.2 |
This is how the two 120 volt phases balance out, given the actual
(in some cases)
or average (in others) loads on each circuit. How this works out
depend entirely
on how the panel(s) are laid out, given the circuits. The first
piece of the puzzle
is that the total amps on Phase A should be the same as the total
amps on Phase B.
The right hand "Totals" column show they are very
closely matched. Although not
as critical, the other piece of the puzzle is to have the amps on
Phase A for each
panel be the same as the amps on Phase B for the same panel.
Reading down
under the "Non-Lighting" and "Lighting"
columns these are also closely matched.
|
National Electric Code - Article 220-30 Calculation: * |
||
|
Watts |
Amps |
|
|
2600 sq ft @ 3 VA / sq ft |
7,800 |
65 |
|
Fans |
1,400 |
12 |
|
Whirlpool |
720 |
6 |
|
Refrigerator |
720 |
6 |
|
Dishwasher |
720 |
6 |
|
Small Appliance Recepts |
7,500 |
63 |
|
Boiler / Well Pump |
3,600 |
15 |
|
Oven |
5,000 |
21 |
|
Washer / Dryer |
1,500 |
13 |
|
Total KVA / Amps |
28,960 |
206 |
|
10 KVA + 40% of Remainder |
17,584 |
132 |
|
The "Turn everything On" Calculation: |
--- |
179 |
* This article defines how to calculate the total load for a
"dwelling unit" to determine the size
service needed. The load listing is per this article. The article
takes into account statistical usage
(meaning you don't use everything in the house at the same time to
its rated electrical capacity)
and typical electrical loads per square foot. In the last row the
179 amps is just what is says:
a calculation that assumes everything is turned on. The important
totals are in the second to
the last line. This calculation was done conservatively by
including things that didn't need to be
listed and adding a couple of hundred square feet for the general
3 VA (volt-amps) per sq ft load.
Even so, the National Electric Code sez the worst case will more
likely be 132 amps.
The house will have a 200 amp service .