earthing micc cable

telectrix

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• Apr 19, 2014

• #2

if there's no earth lead on the gland, the easiest way, IMO, would be to fit a banjo and fly lead.

 

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onions1066

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• Apr 19, 2014

• #3

Just use a pyro clamp? You'll risk splitting it with an earth clamp

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Lucien Nunes

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• Apr 19, 2014

• #4

What is the cable terminated into at the moment? If the gland is through a plastic box, fit a Piranha nut. If it's into metal but not the CU, banjo as per Tel. If no gland, can you re-seal with an earth-tail seal?

Onions you must eat more spinach than me if you can 'split' a 2H6 with anything less than a cold chisel and hammer.

 

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OP

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trev

• Apr 19, 2014

• #5

If there's enough spare cable I'd seriously consider repotting it with a pot with an earth lead in it. If not, Tel's and Onion's methods would do the job just as well

 

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OP

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davesparks

• Apr 19, 2014

• #6

Suitable size bare p clip soldered to the sheath.

 

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onions1066

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• Apr 19, 2014

• #7

Well a pyro clamp is essentially 2 bare p clips with a solid block to screw into. Surely the best method is to use the materials that are designed for the job.

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OP

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davesparks

• Apr 19, 2014

• #8

Can you post a pic please? I've not come across them yet.

 

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onions1066

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• Apr 19, 2014

• #9

I'll grab one out the van if I have one

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electrician4u

• Apr 19, 2014

• #10

thanks for the suggestions. I would appreciate a pic of the pyro clamps. just read a similar thread on the IET forum that says because the supply cable is the property of the distribution company, nothing should be attached to it, although someone mentioned that during an upgrade to the supply of a block of flats they were at, Tenby Earth clips have been used with a 16mm lead coming off them. I like the piranha nut idea. never heard of them b4 but just looked them up

 

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OP

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trev

• Apr 19, 2014

• #11

I'd bet a £ to a pinch of pig poop that this MI is nothing to do with the DNO. Someone on the IET forum has picked up the wrong end of the stick.
In 34 years since coming into the trade I have never seen a DNO feed in MI

 

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7029 dave

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• Apr 19, 2014

• #12

trev said:

I'd bet a £ to a pinch of pig poop that this MI is nothing to do with the DNO. Someone on the IET forum has picked up the wrong end of the stick.
In 34 years since coming into the trade I have never seen a DNO feed in MI

Click to expand...

Same as, but seen plenty of subs.

 

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OP

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trev

• Apr 19, 2014

• #13

Yeah, any amount of MI subs. The building I'm working in just now is all subs in the stuff.

 

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onions1066

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• Apr 19, 2014

• #14

Pyro earth clamp

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OP

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electrician4u

• Apr 19, 2014

• #15

sorry, my mistake. they were referring to lead sheathed cable on the IET forum. you're also correct in saying it comes off a sub/isolator, so attaching something shouldn't be a problem. as for the pyro clips, are they easily available and do they come in different sizes?

 

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