Thread Tools Search this Thread Display Modes
Old 04-25-2013, 02:37 PM   #1
TF Site Team
FlyWright's Avatar
City: California Delta
Country: California Delta
Vessel Name: FlyWright
Vessel Model: Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 12,858
Kill-A Watt Meter on Sale

$14.99 w/Code: MLCKAM25L1 For First 100 Orders

This is a great tool for measuring electrical loads and monitoring the quality of shore power.

P3 International Kill A Watt P4400, Large LCD Display Electricity Usage Monitor, Learn Which Appliances Are Costing You The Most!

My boat is my ark. It's my mobile treehouse and my floating fishing cabin. It's my retreat and my respite. Everyday I thank God I have a boat! -Al

@DeltaBridges - 25 Delta Bridges in 25 Days
FlyWright is offline   Reply With Quote
Old 04-25-2013, 03:25 PM   #2
Shoalwaters's Avatar
City: Rodney Bay Lagoon
Country: St. Lucia, West Indies
Vessel Name: "Dragon Lady"
Vessel Model: DeFever 41
Join Date: Feb 2008
Posts: 681

My a/c units(3), watermaker, dive compressor, refrigerator, etc have 110v 15 amp plugs on each power cord with dedicated GFI receptacles to match. This was done to make it easy to remove the units if it should become necessary, and the telltale lights on the GFI receptacles are a nice confirmation that you have power if something doesn't want to run. A hidden advantage is that I can plug each item into my Kill-A-Watt and see how much juice it consumes. Of course the microwave, electric kettle, toaster etc have plugs anyway, so I can compile a fairly complete list of how much each electrical item on the boat consumes and then load, but not overload, my 6.5Kw generator.

I would not recommend running the heavier appliances through a Kill-A-Watt for any length of time as they tend to get hot (according to some reviews), but a couple of minutes while taking a reading seems fine.

It should be born in mind that things like air-conditioning compressors take a lot more juice when starting than when running. Unfortunately the Kill-A-Watt does not seem to react fast enough to measure the start-up current.

One of these short extension cords can make the display much easier to read.
Attached Images

If all else fails, read the instructions
If it ain't broke, don't fix it
Shoalwaters is offline   Reply With Quote
Old 04-25-2013, 04:01 PM   #3
City: Hotel, CA
Country: Fried
Join Date: Sep 2011
Posts: 8,320
The link is dead when I click it?

Maybe the first hundred are gone already?

It's easier to fool people than to convince them that they've been fooled - Mark Twain
CPseudonym is offline   Reply With Quote
Old 04-25-2013, 05:05 PM   #4
Veteran Member
City: seymour, Ct.
Country: us
Vessel Model: 1980 Mainship MS1
Join Date: Jun 2012
Posts: 33
just worked for me...
rhakct is offline   Reply With Quote
Old 04-25-2013, 08:35 PM   #5
Senior Member
Gulfstar 36's Avatar
City: Kent Island
Country: USA
Vessel Name: Sundowner
Vessel Model: Gulfstar 36 MrkII
Join Date: Jul 2012
Posts: 234
Snagged one, Thanks
Gulfstar 36 is offline   Reply With Quote
Old 04-25-2013, 09:32 PM   #6
healhustler's Avatar
City: Longboat Key, FL
Country: USA
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 4,983
I used my Kill-a-watt to measure everything I use on the boat. Very useful, great tool, and helps with understanding the limits of boat electrical systems. Everytime I show my Admiral a reading on her plethora of appliances, she says "Oh".
healhustler is offline   Reply With Quote
Old 04-26-2013, 05:31 AM   #7
FF's Avatar
Join Date: Oct 2007
Posts: 20,693
"Unfortunately the Kill-A-Watt does not seem to react fast enough to measure the start-up current."

The start up load is perhaps 1/2 a second , doesn't do much for total watts consumed per 24 hours.

A low cost method to discover approximate LRC (locked rotor current AKA start up load) is to wire in a fuse box and see what size fuse blows and what size doesn't.
FF is online now   Reply With Quote
Old 04-26-2013, 09:02 AM   #8
Senior Member
Capn Craig's Avatar
Join Date: Oct 2010
Posts: 487
Snagged one last night. Looks like a great deal on a useful toy. Thanks Al.
Capn Craig is offline   Reply With Quote
Old 04-27-2013, 07:24 AM   #9
Join Date: Oct 2010
Posts: 2
Bought one last year

I agree with the Kill-A-Watt accolades. Easy to use and inexpensive. Used it to figure out our solar requirement before going down that path.

Unfortunately, I bought mine for $25.

But done with it now and would sell it for $15 if the "deal" has expired on this website.

l.m.k. if anyone is interested.
mtwguides is offline   Reply With Quote
Old 05-03-2013, 07:03 AM   #10
jleonard's Avatar
Join Date: Jun 2008
Posts: 3,938
Gee I got one au gratis a year and a half ago and never used it. I guess I should break it out and experiment a little bit.

Jay Leonard

New Port Richey,Fl
jleonard is online now   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

All times are GMT -5. The time now is 07:07 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012