grounding a generator 240v

steptoe · Post by **steptoe** » Sun Jun 26, 2011 11:10 am

I know, should be in open slather...

Just wondering on how to ground or earth a portable petrol powered generator. They should all be grounded to the ground but never are - just sit on the rubber feet!

Understandably if using one outside can stake into the ground and attach to the grounding point on gennies frame but what abut when working indoors on concrete floors

Someone's got a job to cut and pop back 1500 dyna bolts in a whorehouse floor

steptoe · Post by **steptoe** » Sun Jun 26, 2011 11:13 am

"fifteen hundred dyyna bolts sitting in the floor"

"what should happen if one should accidentaly be cut to the floor?"

"1499 dyyna bolts sittin' in the floor"

Matt · Post by **Matt** » Sun Jun 26, 2011 11:18 am

Depends on the Generator, To much explain but some don't have to grounded and could make it worse. If it was me, go buy a cordless angle grinder...

But just a thought.. As gen inside is going to case a endless list of problems, lol!

Post by **TOONGA** » Sun Jun 26, 2011 11:47 am

steptoe wrote: Someone's got a job to cut and pop back 1500 dyna bolts in a whorehouse floor

So what sort of "whorehouse" is this?

were the beds bolted to the floor?

99.9% of portable generators don't need to be earthed these days as they are internally earthed

TOONGA

2coupedup · Post by **2coupedup** » Sun Jun 26, 2011 3:28 pm

all generators need to be earthed, but mainly depends entirely on what is plugged inot them... eathed appliences (eg. welder or bricksaw etc...) need to have the generator earthed for safety reasons... double insulated appliences (eg. most hand held power tools - identified by a picture on the voltage label {a square inside a square}) dont have an earth and dont really need to have the generator earthed...

so using a hammer drill (double insulated) for drilling dyna bolt holes, there is no real need for an earth stake unless your on a work-cover/building site (NSW) because you have to make it look pretty and take all safety precautions to keep the paperwork boys happy...

service, repair and hire them and much more all day...

cheers

steptoe · Post by **steptoe** » Sun Jun 26, 2011 7:27 pm

Yeah, was thinkin' the think inside the square thing makes 'em sort of OK to a point. Gennie is an ALDI jobby with earth terminal. Of all the gens in use of the smaller variety never seen one earthed! Just good luck nothin' gone wrong. We'll have some dock doors to open before the dock wall comes down as well for fume ventilation. Cordless grinder is a good idea. wares and whores, ah yes comprehension error

Gannon · Post by **Gannon** » Sun Jun 26, 2011 7:47 pm

Yeah as mentioned above, most hand tools are double insulated and thus dont have an earth anyway.

Even with earthed equipment and an unearthed generator, because the generator is isolated from the ground, the voltage it produces has no potential to ground and there is no electrocution risk. Even if an earthed tool develops a fault, the fault will travel back through the appliances earth conductor and trip the safety switch on the generator, without any electrical path through the ground.

When im at work tomorrow, i'll have a read of the AS/NZS 3000 rule book and report back

steptoe · Post by **steptoe** » Sun Jun 26, 2011 11:16 pm