12 replies to this topic

[639trbl]

TLW,

CHECK YOUR OTHER POST ON THIS--ADDED MY $.02'S THERE!!

FEEL TOO BAD TO TYPE IT ALL OVER!!! no way THINK I GOT A VIRUS!! mad2b

horns brewsky

[639trbl]

TELL ME BRO!! SLEPT MOST OF THE DAY--JUST FINISHED A COLD ONE -- brewsky FEEL BETTER AL READY!! HEADED TO THE BIG CAMP ABOUT 1 TOMORROW FOR AT LEAST 1--MAYBE 2 WEEKS!!

DEPENDS ON WHEN THE DOC RELEASES ME--GO BACK THE 20TH--HOPEFULLY LET ME GO BACK THE MONDAY AFTER THANKSGIVING!! yes way IF THAT'S THE CASE, I MAY GO SEE DEADENDZ AND ALLEYCAT THE DAY AFTER THANKSGIVING!! yes way

horns brewsky

[BAS]

It has to do with "step potential". The bucket trucks we have all have lower boom inserts rated at 100,000volts/inch and are tested twice a year, but we have to ground them together and to common ground if 2 trucks are within 10 ft of each other to eliminate that step potential should either become energized.

[System Tech Senior]

Majority of cable trucks are not insulated.. We do no type of grounding either. That's one reason I like my distance from the spark lol, and for the fact I don't know power, don't like getting shocked and i'm not messing with it.

[wood stabber]

For you cable guys protection,,, makes your truck a better path to ground than your body.As for power guys,I don't and won't ground a truck.I want my truck isolated,so if my boom test and my liner is good ,there is no way in hell I'm putt'n a ground on my rig,the grunt can stay off the truck till I get off the phase.

[Lightningrod]

On all our hotline trucks we don't ground either, that's why we have the 100,000V per foot insulation. If you don't trust that then what the heck are you in the air for in the first place. On our conermounts with no tested insert then they have to ground the truck body when working aloft, as you said WS it provides a better path to ground.

[MTBSW]

The sole purpose of grounding trucks is to make sure that if the truck becomes energized there will be enough fault current return so the protective equipment will operate and deenergize the line. If the truck is not connected to ground and the only current return path is through the tires and outriggers there may be enough resistance to ground that there won't be enough fault current flow for the protective equipment to see it. Your truck will just look like load to the breaker and the truck will stay energized. But even with the truck grounded, because of the resistance in the longer ground cable usually required for truck grounding, there will still be enough voltage difference between the truck and the earth to be a touch potential or step potential hazard. The only real protection is to not touch any truck that is potentially exposed to becoming energized.

[System Tech Senior]

I agree MTBSW.. I ain't touching it!

[TexasLineworker]

The sole purpose of grounding trucks is to make sure that if the truck becomes energized there will be enough fault current return so the protective equipment will operate and deenergize the line. If the truck is not connected to ground and the only current return path is through the tires and outriggers there may be enough resistance to ground that there won't be enough fault current flow for the protective equipment to see it. Your truck will just look like load to the breaker and the truck will stay energized. But even with the truck grounded, because of the resistance in the longer ground cable usually required for truck grounding, there will still be enough voltage difference between the truck and the earth to be a touch potential or step potential hazard. The only real protection is to not touch any truck that is potentially exposed to becoming energized.

That is the whole point of truck grounding.....so that the reclosers will pick up the fault and operate as quickly as possible to kill the circuit. Anyone leaning against or bin diving on a truck that becomes energized, even for a split second, will still get it.

[Lightningrod]

That is the whole point of truck grounding.....so that the reclosers will pick up the fault and operate as quickly as possible to kill the circuit. Anyone leaning against or bin diving on a truck that becomes energized, even for a split second, will still get it.

I totally agree TLW, that is one of the first things you are tought in linework, when the boom is on or close to the phase ---don't touch the truck unless you step on an insulated matt 1st or we have to back away from the phase if someone needs something off or out of the truck.

[rcdallas]

That is the whole point of truck grounding.....so that the reclosers will pick up the fault and operate as quickly as possible to kill the circuit. Anyone leaning against or bin diving on a truck that becomes energized, even for a split second, will still get it.

I totally agree TLW, that is one of the first things you are tought in linework, when the boom is on or close to the phase ---don't touch the truck unless you step on an insulated matt 1st or we have to back away from the phase if someone needs something off or out of the truck.

That's what I was taught, stay off the truck... however my company safety rules say otherwise... we ground our trucks AND lay down a rubber blanket along with class 3 gloves... not to mention we use class 3's to hook the truck ground up to the pole ground.

Recently they decided to make it a shall use a line hose EVEN with the line grounded where within any part of your body has slippin, trippin, falling distance, etc....

Guess were safe, eh?