Ask Experts Questions for FREE Help !
Ask
    ggalante's Avatar
    ggalante Posts: 2, Reputation: 1
    New Member
     
    #1

    Aug 29, 2008, 05:28 PM
    Making an extension cord to connect a 240 generator circuit to a 240 house circuit.
    How doo you wire a 4 wire 240 volt plug for a generator to a 3 wire 240 volt house circuit.

    Thank you... Guy
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
     
    #2

    Aug 29, 2008, 05:49 PM
    YOU DO NOT!! :mad: :mad: :mad:

    You use a transfer switch or main breaker interlock.
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
    Senior Member
     
    #3

    Aug 29, 2008, 06:04 PM
    Quote Originally Posted by ggalante
    How doo you wire a 4 wire 240 volt plug for a generator to a 3 wire 240 volt house circut.

    Thank you...Guy
    ggalante, where did you get this idea from?

    If it's from your neighbors, then steer clear--they are on the wrong page!
    ex_code_jock's Avatar
    ex_code_jock Posts: 8, Reputation: 1
    New Member
     
    #4

    Aug 29, 2008, 06:43 PM
    If it's a 4 wire 220, it has 2 hot legs, one neutral leg and one groud (much like an electric oven) it has 2 hots because its 220, it has a neutral because it has some components that operate on 110 (so it pulls 110 off one on the hot legs and sends it back via the neutral), usually the timer or a light on an appliance.
    A 3 wire (say for an central air unit) only has 2 hots and a groud, it doesn't have a neutral because there is nothing operating at 110volts in it...

    So, yes, you don't do it
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
     
    #5

    Aug 30, 2008, 04:09 AM
    While this is true Jock, that is the far lesser of the reasons.

    The real reason is that: 1) making a "suicide cord"is just about one of the STUPIDEST things you could ever do (I would hope for obvious reasons), and 2) by doing this there is no "transfer" action.
    There IS the real chance the utility will be back fed and that someone will be hurt or killed.

    I don't care so much about the person who makes a cord like this, Darwin will take care of them in the end, it's their unsuspecting families and the utility workers who will suffer.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
     
    #6

    Aug 30, 2008, 04:11 AM
    I see the OP was on at 9:44pm last night, yet did not reply.

    I hope he got the message.
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
    Senior Member
     
    #7

    Aug 30, 2008, 01:38 PM
    Quote Originally Posted by stanfortyman
    I see the OP was on at 9:44pm last night, yet did not reply.

    I hope he got the message.
    He'll get it, once he or she is in handcuffs. :eek: :rolleyes:
    ggalante's Avatar
    ggalante Posts: 2, Reputation: 1
    New Member
     
    #8

    Aug 30, 2008, 04:40 PM
    Quote Originally Posted by stanfortyman
    While this is true Jock, that is the far lesser of the reasons.

    The real reason is that: 1) making a "suicide cord"is just about one of the STUPIDEST things you could ever do (I would hope for obvious reasons), and 2) by doing this there is no "transfer" action.
    There IS the real chance the utility will be back fed and that someone will be hurt or killed.

    I don't care so much about the person who makes a cord like this, Darwin will take care of them in the end, it's their unsuspecting families and the utility workers who will suffer.

    Thank you all. I will look at getting a transfer switch.

    Guy :)
    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
    Senior Member
     
    #9

    Aug 30, 2008, 05:37 PM
    Quote Originally Posted by ggalante
    Thank you all. I will look at getting a transfer switch.

    Guy :)
    Now this is the kind of DIY we are looking for!! Someone who is willing to listen, and act on what we know as professionals!!

    ;) ;) ;)
    joeblow100's Avatar
    joeblow100 Posts: 1, Reputation: 1
    New Member
     
    #10

    Sep 4, 2011, 08:05 PM
    What about if the MAIN breaker is pulled - don't have power lines down - can't get back to transmission lines
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
     
    #11

    Sep 4, 2011, 08:55 PM
    Quote Originally Posted by joeblow100 View Post
    what about if the MAIN breaker is pulled - don't have power lines down - can't get back to transmission lines
    Try and justify it all you want. It's still not right or safe. Even three years later.

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

AIC ratings for circuit breakers [ 2 Answers ]

What is an AIC Rating and how is it calculated?

Circuit breaker panels [ 11 Answers ]

Whenever I plug in my electric heater on one side of my house it knocks out the circuit breaker.Is it possible to add another breaker panel in the box or increase the size of the panel in the box? The panels in the box are 15amps, what is the next largest size iI can increase it to?

My circuit breaker won't reset [ 2 Answers ]

Hi All you electricians out there. A light bulb just blew in my living room. Normally I would just go down to the fuse box and reset the circuit breaker. Today the circuit breaker won't lift back into position. What does this mean... I would do almost anything not to have to pay for an...

Circuit Breaker Overload [ 1 Answers ]

I have just installed Heat Tape on my roof to deal with ice damming that has started to take place on my roof (no Cold Roof and I live in Wyoming on a North Facing Slope) Anyway, to plug in the heat tape, I converted an old light fixture into an outlet, and hoped that my problem would be fixed. ...


View more questions Search