Ampacity Calc For Laundry - Electrical - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical


Thread Tools Display Modes
Old 01-03-2011, 03:32 PM   #1
I ask the impossible!
Join Date: Aug 2010
Location: Royal Oak, Michigan
Posts: 1,109
Rewards Points: 554
Blog Entries: 7

Ampacity calc for laundry

Okay, laundry room currently is using an old circuit on which the washing machine and now the sink pump are connected... As well as kitchen small appliances, disposal, dishwasher, a light fixture above the kitchen sink, I think possibly the garage, the light in the utility room and a light outside. I'm not saying I like it, in fact I can clearly say that I don't because it's one of the reasons I'm rewiring the kitchen onto new circuits. But it's there. On one 15 amp circuit.

I added the sink pump to raise the laundry waste water to go into the kitchen sink drainage when I needed to replace the underground run to the main stack.

So anyway, I know that it would be best to have the washing machine and sink pump on a new circuit which would require GFCI. My question is whether they can both be on one 20A circuit. Here's the specifics:
Flotec 1/4 HP pump, rated as motor full load amps 8.5
GE Energy Star rated 4.0 cu. ft. frontload washer (about 4 years old), only info I can get off GE's website says maximum current rating is 12.0 amps, but it says that as if it's for the dryer which is confusing because it says that on the washer page.

The dryer is electric and already has its own dedicated outlet of course.

What I don't get is if there's a 12 amp draw from the washer and 8.5 from the pump, I should already be tripping the 15 amp breaker every time.


WillK is online now   Reply With Quote
Old 01-03-2011, 04:09 PM   #2
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000

Ampacity calc for laundry

Laundry area requires a dedicated 20 a circuit
My sump pump is also in the same room as the laundry
I actually had the washer, sump pump, sm fridge & a freezer running off a 20a circuit

Washer 12a is probably the Max it can draw, same with the sump
So they can run together usually without a problem
I have a Killawatt that I use to test power draw
...I haven't used it on the washer or the sump


Scuba_Dave is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
NM vs THHN Ampacity sirsparksalot Electrical 14 05-07-2011 06:22 PM
voltage drop/box fill calc qbert Electrical 4 01-23-2010 11:24 PM
Conduit Fill & Ampacity capndave Electrical 37 03-26-2008 03:16 PM
Maximum Ampacity for Aluminum Feed Randell Tarin Electrical 8 03-17-2008 01:57 PM

Top of Page | View New Posts