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Discuss sub main started. in the UK Electrical Forum area at ElectriciansForums.net

Why fit a banjo when glanding onto galvanised trunking?

Personally I use earth nuts these days as they make good reliable contact whether it's bare metal or painted. I only connect a flylead with insulated enclosures or if I have any reason to doubt the earthing of the metal I'm glanding in to.
Gland plates I will run a flylead to the gland plate and sometimes replace it with a brass plate if I have a lot to make off to it.
not always needed, I could show you pictures of a place that has that much steel bonded to the MET its a waste of copper to put on fly leads to MB.

we are talking about unistrut from window brackets on steel girders bolted to floor.

we get through a fair bit of unistrut. at least 50 x 3m lengths in this one room
 
not always needed, I could show you pictures of a place that has that much steel bonded to the MET its a waste of copper to put on fly leads to MB.

we are talking about unistrut from window brackets on steel girders bolted to floor.

we get through a fair bit of unistrut. at least 50 x 3m lengths in this one room

Ooh...

think of the parrallel paths....

be a bit like `loop the loop`....
 
not always needed, I could show you pictures of a place that has that much steel bonded to the MET its a waste of copper to put on fly leads to MB.

we are talking about unistrut from window brackets on steel girders bolted to floor.

we get through a fair bit of unistrut. at least 50 x 3m lengths in this one room

You're talking to someone who would be more than happy to carry on the old method of building a steel frame from steel angle welded together to carry the switchgear and busbar etc then bolting the incoming earth to the steel frame and everything else earths through the steelwork/trunking etc.

I've just started subbing for a company who had me installing 19core SWA to carry 6 circuits, I'll be having words about that waste of copper soon enough, 12core would have been fine!
I've seen the materials list for the next job too, 700mts of G/Y to pull in to steel trunking/conduit! I'll be buggered if im wasting my time doing that!
 
You're talking to someone who would be more than happy to carry on the old method of building a steel frame from steel angle welded together to carry the switchgear and busbar etc then bolting the incoming earth to the steel frame and everything else earths through the steelwork/trunking etc.

I've just started subbing for a company who had me installing 19core SWA to carry 6 circuits, I'll be having words about that waste of copper soon enough, 12core would have been fine!
I've seen the materials list for the next job too, 700mts of G/Y to pull in to steel trunking/conduit! I'll be buggered if im wasting my time doing that!
just because its a waste doesn't mean I dont have to do it.

we have to follow a spec as well.

and I was only talking about swa in the short jump from trunking to panel anyway.

quite often we end up bushing directly into the panel and not through the gland plates so its perfectly acceptable (I would prefer the gland plates though)
 
just because its a waste doesn't mean I dont have to do it.

we have to follow a spec as well.

and I was only talking about swa in the short jump from trunking to panel anyway.

quite often we end up bushing directly into the panel and not through the gland plates so its perfectly acceptable (I would prefer the gland plates though)

I know sometimes we have to follow a spec no matter how daft it may be.
Like why you have to use SWA for a short jump from a panel to trunking? Why don't they just join the trunking to the panel, or use conduit?

But hey, if they are putting their name to the design they can have whatever they want I guess.
 
I hope that piccie wasn't taken with your Canon 20D.

10D. yes it was. problem was the poor light level, and the fact that the autofocus could not settle because of the glass on the meter. after a few beers, the manual focussing was just as bad,

edit: bugger. wrong thread. was thinking of the pic of the meter. no. this pic was done with phone. with the phone in poor light, there's a delay between pressing the button and the phone actually taking the shot.
 
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10D. yes it was. problem was the poor light level, and the fact that the autofocus could not settle because of the glass on the meter. after a few beers, the manual focussing was just as bad,

Nice camera Tel!!, I keep saying I'm going to splash out one day
 
Nice camera Tel!!, I keep saying I'm going to splash out one day

only thing i don't like about the 10D is the small screen size. think the 30D has a bigger screen, there's a great camera shop in chester, 2nd hand SLRs at good prices.
 
only thing i don't like about the 10D is the small screen size. think the 30D has a bigger screen, there's a great camera shop in chester, 2nd hand SLRs at good prices.

Is it a Full frame Camera
 
Sorry Tel got to go lad's just turned up, I will check in later!!
 
Is it a Full frame Camera
no, not as in full 35mm, it's smaller. some later canons are full frame but not sure which. ask geordie, he's got a 30D or a 40D.
 
just thinking... should it be called a sub-main? reason it query this is because a sub-main by definition is fed from a OCPD in a main DB. in this case, the tails are going to be split before the main DB and fed direct from the meter, so really, i will have 2 main boards, a sub is fed with that SWA with the missing gland .LOL.
 
no, not as in full 35mm, it's smaller. some later canons are full frame but not sure which. ask geordie, he's got a 30D or a 40D.

I have a 30D and it isn't full frame.

The 30D was introduced in 2006 and at that time the only Canon full-frame DSLRs were the 5D Mark II and the 1Ds Mark III.
 
the 10D is a 1.8" as well. OK if you have good eyes.
 
I was looking at the 5d mark 111, but a bit pricey nearly 3k, that's with a lens or 2,300.00 for body only.
 
Our lass has a couple of 36D. Lovely to handle and a doddle to use. Easy laid out functions with only 2 buttons to control and brilliant to zoom in on.
 
Our lass has a couple of 36D. Lovely to handle and a doddle to use. Easy laid out functions with only 2 buttons to control and brilliant to zoom in on.
Our lass has the very same although the SD card port is a bit worn and has a nasty crack at the rear.... :smilewinkgrin:
 

Reply to sub main started. in the UK Electrical Forum area at ElectriciansForums.net

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