Using generators with class 1 equipment - earth spike?

SNIP

The fact that the portable geny had an earthed centre tap would make it extremely UNsuitable for use with an external earthed output leg. As you say it is essential that whoever installs the system fully verifies it. You could of course argue that having a maximum of 115 volts to earth shock potential from the source would make it safer to use and a double pole 30mA RCD on the geny output should detect (and isolate) any imbalance or leakage to earth current.

In message , snipped-for-privacy@meeow.co.uk writes

Not when it is part of a truck.

In message , "Dave Plowman (News)" writes

Did you know Joe from Lee? He did a lot of the Beeb golf OB's an interesting character!!!!!!!!!!!

Not offhand, but I'd guess they employ hundreds. And we don't normally use the large gennys you'd get on golf, etc.

And most sparks are characters. ;-)

I have two single phase general purpose generators both of which earth at the midpoint between neutral and line - 110v.

Ahh, sorry I should have added 240V as a rider on that, given we were talking event power it seemed reasonable to assume....

Regards, Dan.

My apologies, I meant 240VAC with the earth at 110V so 110-0-110.

Thanks Dan, very useful. The gig went ahead successfully, the only problem was that we couldn't get the earth spike out so had to hammer it further into the ground.

Dave

Dave Plowman (News) wrote: ... snipped

Did you ask?

Dave

Given that UK practice only fuses (and switches) one leg (and in fact that I have seen RCDs that only switch one leg), how could this ever be viewed as safe in the UK?

It is standard in America where most domestic power is done this way, but I cannot see such a thing as being safe in the UK.

Regards, Dan (Very surprised to hear about this).

Fooking ran on batteries all day because of no genny. So no heating in the van - and there was a cold wind. Tomorrow, definitely a genny. A wasteland in Greenwich. ;-)

And and 0.700 start so I'm off to bed...

A van? A VAN! Get out there man with yer trolly and brolly. Namby pamby sutherners. B-)

I forgot to ask at St James's Park. One of the nice twin sets as well rather than a single.

But we don't grade the pictures afterwards. So the LD needs a controlled lighting environment to adjust the camera correctly. Ie a blacked out rear crew area of a van. And I like my own space too. ;-) Easier to concentrate

- and I can use a speaker for rehearsals.

Ok. Soft southerners. ;-)

The 100KVA genny simply parked on concrete with its earth rod under one front wheel. Each 'CU' has a main RCD, and RCDs feeding each circuit from it. Neutral not tied to earth - although I'm told some do. Warning lights on the 'CU' for polarity reversal. We were running single phase.

Been peaking at the next script Dave ?!.... :~)

No. That would be that after an alien attack from the planet Zog the same sex uniforms rape one another in the writing room. It's part of the set that needs using. Then, after their families get wiped out by a massive sunspot, they convert to Buddhism. Absolutely PC. And Terry and Rimini have a whispered conversation that only they can hear - almost. Below the noise of the genny which can't be situated where I wanted it because they haven't got long enough cables. Oh yes. Tomorrow, under the arches a few metres from Clapham Junction. Trains every 30 seconds. Which at least will drown out the helicopters. But I don't care. I'll start writing crappy poetry.

That is "normal".

With *everything* through RCDs the N - E bond is not quite so important. A L - E fault will probably cause a big enough inbalance to trip one of the RCDs. Even if it doesn't anyone coming into contact the now "live" E will trip the RCD.

Oh no, not *another* Gay Sex That Shocks The Tabloid Headline Writers episode. I can't imagine anything more frightening than Gina Gold and June Ackland in Hot Lesbian Truncheon Action :-)

Owain