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Parts used:
Voltmeter:
SMAKN® 2-wire 0.56" DVM Digital Voltmeter Green LED Panel Volt Ac 30-500v 110/220v Voltage Tester Meter - - Amazon.com
Box:
Amazon.com: PI Manufacturing ABS Plastic Project Box (5.89" (L) x 3.89" (W) x 2.36" (H)): Home Improvement
Gland Connectors
10 Pcs PG9 Black Waterproof Cable Gland Connectors - Conduit Fittings - Amazon.com
Power Cords
Amazon.com: [UL Listed] Cable Matters 2-Pack Heavy Duty Computer Monitor Power Cord in 6 Feet (NEMA 5-15P to IEC C13): Electronics
Nema Socket
https://www.amazon.com/gp/product/B00009W3AA/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
Voltmeter:
SMAKN® 2-wire 0.56" DVM Digital Voltmeter Green LED Panel Volt Ac 30-500v 110/220v Voltage Tester Meter - - Amazon.com
Box:
Amazon.com: PI Manufacturing ABS Plastic Project Box (5.89" (L) x 3.89" (W) x 2.36" (H)): Home Improvement
Gland Connectors
10 Pcs PG9 Black Waterproof Cable Gland Connectors - Conduit Fittings - Amazon.com
Power Cords
Amazon.com: [UL Listed] Cable Matters 2-Pack Heavy Duty Computer Monitor Power Cord in 6 Feet (NEMA 5-15P to IEC C13): Electronics
Nema Socket
https://www.amazon.com/gp/product/B00009W3AA/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
Last edited:
mspohr
Well-Known Member
Sorry but it's Sunday and my brain is not working well.
What is this and what does it do?
You have a voltmeter in a box which is reading 248 volts.
You say it's a 220v adapter. Is the input 220? How did you get 248 from 220?
There is a small but very real possibility you aren't going to be the only one using this. Eg. you use it on the road in a condo, maid comes in trips over the cord, unplugs one plug, goes to plug it back in, gets shocked. Or your wife does the same. Or a visiting friend's kid does the same.
For about $30 more in parts, you could have built the same thing, but made it safe. See post 23 onwards of this thread for a schematic of how it could be built to be safe.
Generating 220V from 110V on the go or in a host garage overnight
His box combines two 120V legs from receptacles to output 240V, all voltages nominal (ie. US residential voltage varies away from 240V up or down often by 10V or more, and if commercial 3 phase electricity is used, the nominal voltage could be 208V).
Yes I could have added two relays to make it safer but decided not to. Honestly just build it for emergencys to have it in the car. I doubt I will use it very often.
mspohr
Well-Known Member
Thanks, cosmacelf, I think I understand now. Looks like he has built an adapter to combine two 120 volt circuits (assuming he can find two sides of the split phase) into a 240 volt, 12 amp circuit.
Also looks like he has not put in any safeguards so this is a very dangerous circuit. He'll probably electrocute someone (maybe himself) sooner or later.
Trust me, I will not electrocute anyone. That's why I said above this is for someone who knows what they are doing and not for everyone.
I worked a lot on hot cirquits before that I know not to kill myself or hurt anyone with this.
I've actually used my 240v combiner a few times on the road. Stayed in a rented condo overnight, and needed a relatively full charge for the next day, with no other option other than combining 120v receptacles.
I guess I would worry more about having to use an extension court then the box itself. If one is used then it should be AWG 14 at least.
hey guys. I am looking for 12 v battery for 2013 model s. can anyone help me with that? unsupported car.
I am in Toronto On, [email protected].
Thanks
I am in Toronto On, [email protected].
Thanks
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