Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 27-04-2018, 00:22   #1
Registered User

Join Date: Jun 2008
Posts: 50
Induction Hob from inverter?

I've read recently a few people using induction hobs on their boats even with modest solar and battery banks.

I'm curious who is doing this, how much solar they have and what models of induction hob they've used?

I've got 420w of solar on 450ah batteries and a 2000va (1700w) inverter. We produce more solar power than we need when the sun is out. Recon that setup would be sufficient for a small single hob induction hob?
northcave is offline   Reply With Quote
Old 27-04-2018, 02:37   #2
Registered User

Join Date: Aug 2016
Location: ABC's
Boat: Prout Snowgoose 35
Posts: 1,756
Re: Induction Hob from inverter?

Surely it depends on the power of the induction hob.

1000w for a hour is only roughly 83amps plus losses so fine. More than that and you probably will have an issue. I doubt a 1kw hob is going to be very impressive.

Also the more ferrous your pots and pans, the more prone they are going to be to rusting. Even more so if you ever wash them with salt water.
mikedefieslife is offline   Reply With Quote
Old 27-04-2018, 06:41   #3
Senior Cruiser
 
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,084
Images: 241
Re: Induction Hob from inverter?

Induction stovetop/hobs come in a wide span of settings, starting with a 100-watt simmer setting, and rising to as much as 3,300 watts for a boil.
A 2000-watt electric stove uses about 320 watt-hours to boil 2 litres of water in 9 minutes 50 seconds.
The same job takes a gas range 8 minutes 18 seconds and requires 3100 watt-hours (converted from Btu).
A 2800-watt induction unit boils 2 litres in about 4 minutes 46 seconds, using about 225 watt-hours.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is online now   Reply With Quote
Old 27-04-2018, 07:13   #4
Registered User

Join Date: Oct 2015
Posts: 2,007
Re: Induction Hob from inverter?

The size of your batteries is not THAT important, what counts is your generation capability.

Your 420W panels will make about 125 Amp-hrs on a nice sunny day. Charged into 14 volts, that’s about 1750 Watt-hours. Enough to run a typical burner plate for an hour. With nothing left over for anything else.

Still sound like a good idea to you?
billknny is offline   Reply With Quote
Old 27-04-2018, 09:08   #5
Registered User

Join Date: Nov 2010
Location: UK, Croatia
Boat: Fountaine Pajot Athena 11.6m Rapa Nui II
Posts: 729
Re: Induction Hob from inverter?

We run our hot water tank 1200w element from 300Ahr of sealed lead batteries, BUT we only do it in bursts of 5-10 minutes which is sufficient, otherwise the voltage drops below 12V even when the batteries are 100%. If you are running an induction hob at highish power, I see voltage drop as the biggest issue not capacity or recharging. We have 480W of solar and 95% of the time we get back to 100% by lunch time. So it will depend on the power you require and duration of use whether it will work
Rapanui is offline   Reply With Quote
Old 27-04-2018, 09:18   #6
Registered User

Join Date: Feb 2015
Boat: Land bound, previously Morgan 462
Posts: 1,991
Re: Induction Hob from inverter?

Quote:
Originally Posted by northcave View Post
I've read recently a few people using induction hobs on their boats even with modest solar and battery banks.

I'm curious who is doing this, how much solar they have and what models of induction hob they've used?

I've got 420w of solar on 450ah batteries and a 2000va (1700w) inverter. We produce more solar power than we need when the sun is out. Recon that setup would be sufficient for a small single hob induction hob?
At the high currents required to do the cooking, the solar power on most any boat is not directly relevant - nearly all the current required will have to come from house bank. You have only 450AH bank, just like I do. If you regularly have enough solar power to recharge those AH, the hob might be a good choice as long as it isn't overused.

We use an electric rice cooker, maybe once every two days, but we also charge batteries with a generator usually at the same time.
waterman46 is offline   Reply With Quote
Old 27-04-2018, 09:52   #7
Registered User

Join Date: Jan 2015
Location: Victoria BC
Boat: Rafiki 37
Posts: 1,390
Re: Induction Hob from inverter?

Funnily enough I just bought one yesterday, hasn't been delivered yet. Will see if it works. If it doesn't it was only 90 CAD

500 watts of solar (though 200 watts of it is not placed well), 400ah of lifepo4 batteries (so not worried about voltage drop) and a 2000 watt inverter.

Note that apparently according to the reviews a pure sine inverter is needed.
__________________
www.saildivefish.ca
alctel is offline   Reply With Quote
Old 27-04-2018, 12:27   #8
Registered User
 
sparrowhawk1's Avatar

Join Date: Jan 2014
Location: Miami Beach Fl
Boat: Colombia Cc 11.8
Posts: 1,758
Re: Induction Hob from inverter?

This is been brought up before and some of the answers seem bizarre to me. I have roughly equivalent of the OP's system. Plus small output wind generators. Bottom line is most days I have excessive electricity that I put to use making tea, reheating food ,frying some eggs ,toasting some bread, excetera. No I cannot run it for 1 hour on high without depleting the batteries. but I could easily keep something warm for hours. Search other threads because I have doubled the time between filling up my propane tanks since I bought my induction heater. And doubled again with my solar oven but that's a whole nother story. PS some of the answers were spot-on I'm just talkin about the naysayers.
sparrowhawk1 is offline   Reply With Quote
Old 30-04-2018, 10:44   #9
Registered User

Join Date: May 2017
Posts: 110
Re: Induction Hob from inverter?

Think you’re on the right track. Our double Hob from Andrew James works fine from our 240v Inverter. My wife loves it as it only heats the contents of the pots /pans, not the entire galley!
Unlike an electric kettle which pulls down max power all the time our Hob pulses power in on/of cycles for max efficiency. Easily controlled.
Happy Wife, Happy Wife
Good luck 😉
Ferrari is offline   Reply With Quote
Old 01-05-2018, 15:46   #10
Registered User
 
sparrowhawk1's Avatar

Join Date: Jan 2014
Location: Miami Beach Fl
Boat: Colombia Cc 11.8
Posts: 1,758
Re: Induction Hob from inverter?

Make sure your inverter is pure sine. An induction hotplate won't work otherwise.
Oops I see alctel has already pointed this out
sparrowhawk1 is offline   Reply With Quote
Old 02-05-2018, 07:29   #11
Registered User

Join Date: Nov 2013
Location: South Africa curent saling to the Bahamas from Annapolis
Boat: Knysna 500SE
Posts: 215
Re: Induction Hob from inverter?

A friend of mine removed his gas hob and replaced with two 30cm wide induction hobs (for redundancy) and his insurance premium was reduced by a good margin as he no longer had gas on his boat (they were happy with the stern BBQ as the gas was not central to the boat and the gas bottle for that was off the stern)

So probably another positive to add to the ones I have seen above.

I am definitely going this route on my new build
Lambretta is offline   Reply With Quote
Old 02-05-2018, 12:19   #12
Registered User

Join Date: Aug 2014
Location: Astoria, NY
Boat: Sabre 38
Posts: 566
Re: Induction Hob from inverter?

We use an 1800 watt induction cook top (NuWave) as our main source of cooking. Powered via a 2000 watt inverter, a 650 amp hour bank and 400 watts of solar. We have been using this set up daily for a year while cruising the Caribbean. Other than about 50 amp hours of charge we pick up while making water every few days, solar takes care of our needs.

Gord is right and this is an important point. I hardly ever use the 1800 watt setting. Boiling water for coffee is more around 800 watts and cooking meats is around 1200 watts. I'd say we average 60 amp hours a day for cooking and we do a fair amount of it.
__________________
Stephen

s/v Carpe Ventum
1983 Sabre 38
My Intro
fallingeggs is offline   Reply With Quote
Reply

Tags
inverter

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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
Induction cook-top and inverter compatibility kefroeschner Electrical: Batteries, Generators & Solar 27 22-02-2019 17:23
Whirlpool 4 ring Induction Cooker top off inverter brightontrader Electrical: Batteries, Generators & Solar 1 28-02-2015 03:36
Whirlpool Induction cooktop only half works on inverter brightontrader Electrical: Batteries, Generators & Solar 30 28-02-2015 00:37
Inverter for 4 Ring Induction Domestic Hob? brightontrader Electrical: Batteries, Generators & Solar 42 05-12-2014 15:40
induction hot plates running off inverter. sparrowhawk1 Product or Service Reviews & Evaluations 1 01-03-2014 13:10

Advertise Here


All times are GMT -7. The time now is 03:45.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.