Micc

[dfc_spark]

Looking for someone with experience of terminating large MICC cables up to 240mm. If anyone is interested in the give me a private message. Work is in London.

 

[benji]

Have you checked to see if the manufacturers " WREXHAM MINERAL CABLE " do a course on the tremination off MICC that you could send a electrician on

 

[onions1066]

That's one hell of a large micc . Good luck making that off.

 

[Engineer54]

That is i believe the biggest MICC cable available, and is going to be a hell of a job to maneuver, dress, and fix, let alone making ends off on!!

The largest i've used, was for a 3 phase sub-main 70mm singles run as a parallel circuit, using high temperature seals. That was on a HK MTR station. Now that was one hell of a job in 70mm, i'd hate to think of doing that same job in 240mm!!

 

[Knobhead]

Don’t think I’ll bother applying.

I’d like to see one being terminated but I ain’t getting involved, sounds too much like hard work.

 

[Lucien Nunes]

Tempting, although I've no experience with this size of cable. I'd like to do some before I die though. I wonder what the project is?

 

[Sintra]

I have sent the op a pm and waiting on details back. Really depends on the price whether i would do it or not but it won't be done for peanuts.

 

[Engineer54]

One things for sure, once terminated, any further dressing of the core conductor will be extreamly restricted, for fear of damaging the termination seal. I'm just wondering what type of seals are going to be used on such large CSA MICC cables??...

 

[Knobhead]

Good point, just how is the termination made? Sweating some form of pot on would make sense to me, filled with epoxy.

One other thing puzzles me, MICC is rolled from a billet so it stands to reason the length will be restricted.

After making off 960mm² sectored SolidAl I’ll definitely give this a miss. I’d rather bend scaffold poles.

 

[tazz]

just looked at my 2L and 3L strippers......and don`t think there big enough ...!

 

[benji]

I think your looking at less than 100mtr in length supplied ,allways thought single cores were easier to make-off than multi cores did a few in the 60s on some ASEA stirrers that were fitted to arc furnaces and a lot of 70mm singles all in trefoil to an induction furnace for tubes

 

[Engineer54]

Good point, just how is the termination made? Sweating some form of pot on would make sense to me, filled with epoxy.

I’d rather bend scaffold poles.

Copper may be many times softer than steel, but within a confined space of say 1 metre X 1/2 Metre or less, that 240mm of copper conductor may just as well be 240mm of steel if your trying to bend dress/set it within that space!! lol!!

dfc spark, ....any chance of posting up a photo or two of this MICC installation especially of the terminations. Perhaps you could also give us a little more information, as to why MICC cable was specified for this job??

 

[UNG]

That is i believe the biggest MICC cable available, and is going to be a hell of a job to maneuver, dress, and fix, let alone making ends off on!!

The largest i've used, was for a 3 phase sub-main 70mm singles run as a parallel circuit, using high temperature seals. That was on a HK MTR station. Now that was one hell of a job in 70mm, i'd hate to think of doing that same job in 240mm!!

According to a Pyrotenax data sheet they do 1H300 and a 1H400. I do wonder how much of it they sell in these larger sizes

One other thing puzzles me, MICC is rolled from a billet so it stands to reason the length will be restricted.

After making off 960mm² sectored SolidAl I’ll definitely give this a miss. I’d rather bend scaffold poles.

Looks like 98m is the maximum length and it weighs in at around a 1/3 of a tonne so nice and easy to handle not

Would be nice to have a go and a bit of a challenge the biggest I've done is 4H25 and it's imperial equivalent spent a weekend diverting 20 sub mains on an existing installation so they could put in a lift for disabled access. You would certainly need all the bending tools to get it dressed and terminated and probably more of a nightmare than the 630mm 4 core SWA I was volunteered to terminate not long out of my apprenticeship


Found a specifiers guide that may of interest to those not familiar with Pyro (it may be of interest to those who are) that gives some installation information on choice of seals, fixings, spacing etc

 

[itselectric]

I haven't seen a pyro that size let alone worked with it. It makes the stuff I worked with look like flex.

 

[Engineer54]

According to a Pyrotenax data sheet they do 1H300 and a 1H400. I do wonder how much of it they sell in these larger sizes

Just wondering if those two sizes are made to order only??
Also noticed, there is no ''screw on'' pot seals for these two sizes of single core cables....