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Do small generators require a ground rod?

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  • #31
    If you had a metal stage, you would be better served to provide a correctly sized bond wire from the generator frame to the stage trailer.
    I'd be inclined to do that unless there is some good reason not to?

    "We Have Met the Enemy and He is Us" - Walt Kelly​

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    • #32
      Oh, and do yous guys call digsafe before you drive a rod?


      I usualy use some kind of protection but I don't call anyone

      Sorry! I just had to.
      J.R. Previously jrble

      See my Dog Of The Hair studio at: http://www.dogoth.com/studio/

      Quote from someone: Flat response? Get out the jack and change the tire.
      If you think "power is knowledge", you have it backwards.

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      • #33
        The use of a ground rod provides a reference. If you are out in the middle of nowhere with no other power source nearby, it doesn't do much, unless you are in the middle of experiencing an electrical storm. In that case, your equipment is now at the same potential as the other earth bound materials around you. If there are no atmospheric electrical anomolies occuring at your location, a ground rod isn't necessary.

        If you are using a genset to augment another power source in the vicinity, and there is a chance that the two grounds will meet, then a ground rod will provide a reference to your genset. Without a ground rod in this case, there is no reference between the power sources and there is no way to predict what the outcome would be should the two sources interact.

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        • #34
          I though tha grounding rods where for lighting issues. How do they pretain to electical useage in this context.

          Also, someoen mentiuoned going form L5-30 to a "quad box". What do you have in this quad box? more L5-30's???? I would think you would need a break for 15, or 20 amp plugs.
          <div class="signaturecontainer">-token canadian<br />
          <br />
          Lest we forget: double-blind tests make audiophiles look twice as stupid. CRAIG V 2007<br />
          <br />
          Just for fun, what do you think would happen if you decided to take a nap in the fast lane of a freeway? agedhorse -2008<br />
          <br />
          Funny, I'll bet I have a good one sitting on my shelf. agedhorse -2008</div>

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          • #35
            Also, someoen mentiuoned going form L5-30 to a "quad box". What do you have in this quad box? more L5-30's???? I would think you would need a break for 15, or 20 amp plugs.
            Yah, not "code" but I've seen one. I've even seen a 3 pin range plug on a quad .

            "We Have Met the Enemy and He is Us" - Walt Kelly​

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            • #36
              Also, someoen mentiuoned going form L5-30 to a "quad box". What do you have in this quad box? more L5-30's???? I would think you would need a break for 15, or 20 amp plugs.


              Correct. That was Axisplayer stating he uses a 30amp cord into the L5-30 circuit on a genny.

              While the "tap rules" allow you to feed multiple 15-amp Edison receptacles via a 20-amp branch circuit, a 30-amp branch requires separate overcurrent protection for either 15- or 20-amp recepacles. So the quad box can't be used. He'd need a breaker panel in place of the quad box and either 15 or 20 amp breakers for the receptacles. What he has is rather dangerous, as an overload or partial/intermittent short could easily heat the cordsets plugged into the quad to the point of a fire.
              Write something...

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              • #37
                Yah, not "code" but I've seen one. I've even seen a 3 pin range plug on a quad .


                Some people seem to think that if the parts can be connected together, it must be okay. Some of them are no longer with us.
                Write something...

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                • #38
                  Yea, I knew the receptacle was rated for 20 amps. The issue was that the receptacle on the Honda puts out 20 amps and the twistlock is a L5-30, but the power output is actually only 23 amps, not 30 amps. I opted to use it knowing I was off a few amps, but it is the configuration that I bought for this unit online. I agree it is suspect and will probably modify it if I continue to use it.

                  You will find it being sold from a generator shop online at this site:

                  http://www.mayberrys.com/honda/generator/html/accessories.htm

                  It is near the bottom listed as Convenience Cable. I did not home-build it. I bought it that way and expected it to be acceptable when delivered.

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                  • #39
                    It would seem to me, plugging a plug strip into the gennys outlet IS using the genny's outlets. No rod required. That would go for the L5-30 as well.

                    You are only using the units outlets.

                    YMMV.
                    Thanks,
                    Bill Cronheim
                    Enterainment Systems Corporation
                    Back stage since 1973

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                    • #40
                      Bill. that is true. the concern Craig has is that the outlet is an L5-30 twistlock carrying 23 amps but feeding a quad box with receptacles rated for 20 amps, where the quad box had no 20 amp breaker to guarantee that a fire won't occur. I am sure that he is technically correct as he is an electrician. I bought the cord online from a generator shop, expecting that it meets whatever requirements are in place or it couldn't be legal to sell. Probably not legal after getting it, but it is a commercial product, not something I designed and built.

                      EDIT: Just checked the box. It's from Gen-Tran and does have two internal 20-amp circuit breakers.

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                      • #41
                        It would seem to me, plugging a plug strip into the gennys outlet IS using the genny's outlets. No rod required. That would go for the L5-30 as well. You are only using the units outlets. YMMV.
                        What if this was my "power strip":
                        http://www.northerntool.com/shop/tools/product_200326702_200326702
                        I don't see any real legal difference between that and a power strip that has a 15 amp breaker and switch? They both plug into an outlet on the generator and provide multiple 15 amp outlets.

                        "We Have Met the Enemy and He is Us" - Walt Kelly​

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                        • #42
                          What if this was my "power strip":
                          http://www.northerntool.com/shop/tools/product_200326702_200326702
                          I don't see any real legal difference between that and a power strip that has a 15 amp breaker and switch? They both plug into an outlet on the generator and provide multiple 15 amp outlets.


                          Well, if were talking about a Honda 3000, it is only a 120v genset, and that is a 125/250v distro.

                          Just sayin'...

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                          • #43

                            While the "tap rules" allow you to feed multiple 15-amp Edison receptacles via a 20-amp branch circuit, a 30-amp branch requires separate overcurrent protection for either 15- or 20-amp recepacles. So the quad box can't be used. He'd need a breaker panel in place of the quad box and either 15 or 20 amp breakers for the receptacles. What he has is rather dangerous, as an overload or partial/intermittent short could easily heat the cordsets plugged into the quad to the point of a fire.


                            That's not actually the "tap rules". The 10, 25, and 100 tap rules require you to terminate into some form of overcurrent protection. What allows you to connect 15 amp plus onto a 20 amp circuit is that you cannot plug a 20 device into a 15 amp receptacle, so 15 amp devices will carry the 15 amps you could call for from a single device. Most 15 amp devices are rated at 20 amp "feed through", meaning you can use both sets of screws without a pigtail. If it's not rated as a feedthrough, you must wire a pigtail to the plug. I'll look up the code article pertaining to what you mentioned when I can find that damned code book.....

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                            • #44
                              Actually this looks like the proper quad box to run off a L14-20 (which is probably what my generator has) :
                              http://www.homedepot.com/h_d1/N-5yc1vZ1xga/R-202019458/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053

                              They make a whole bunch of different ones:
                              http://www.homedepot.com/webapp/wcs/stores/servlet/Search?keyword=convenience+cord&langId=-1&storeId=10051&catalogId=10053

                              "We Have Met the Enemy and He is Us" - Walt Kelly​

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                              • #45
                                210.21 b

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