Conduit size in metric

[LarryFine]

Æ

Cool! A new toy! Thanx!

 

[kwired]

Or on Win 10 the search bar next to the start menu button.

 

[kwired]

Æ

Cool! A new toy! Thanx!

Actually I believe same toy has been there since at least Win 95

 

[jim dungar]

Start Menu -> All Programs -> Accessories -> System Tools -> Character Map.

Or Start Menu search: "Character Map"

Which can also give you many other characters. Most of these special characters also have a control code, so the can be type by holding down the ALT key then entering the 4 digit code on a numeric (10-digit_ keypad). These characters will depend on your computer operating system, some times they may not even be displayed. I don't believe many of these work on smart phones, so I don't use them as often as I used to.

My favorites have been:
degree ° = alt + 0176
plus/minus ± = alt +0177
square ² = alt + 0178
cube ³ = alt + 0179
phase Ø = alt + 0216
micro µ = alt + 0181
European pound £ = alt + 0163

 

[tortuga]

Someone correct me if I am wrong but real world ISO metric conduits are differently sized than those listed in 300.1(C) .
300.1(C) and all the metric stuff in the NEC came from the first wave of 'metrification' in the 70's which sort of stalled then failed.
Now that we have been inundated with metric the NEC should introduce tables for real metric conduit and wire:
1/2" = M20
3/4" = M25
1" = M32
1-1/4 = M40
NEC 334.28 and 342.28 are also still around and require field cut to be imperial threads unless you get special permission (90.4), which I might add is easy to get, or use adapter bushings.
300.1(C),342.28,334.28 are not really enforceable parts of the NEC anymore and I imagine it wont be long before they are re-worded to allow ISO sizes and thread pitches also.
I like the rest of us do more and more projects each year that involve some ISO metric conduit, fittings, boxes, fixtures and or panels.
Also there are plenty of LFMC fittings that come in standard ISO metric sizes like M1.5X20 or M1.5X25.
Cheers

 

[kwired]

Someone correct me if I am wrong but real world ISO metric conduits are differently sized than those listed in 300.1(C) .
300.1(C) and all the metric stuff in the NEC came from the first wave of 'metrification' in the 70's which sort of stalled then failed.
Now that we have been inundated with metric the NEC should introduce tables for real metric conduit and wire:
1/2" = M20
3/4" = M25
1" = M32
1-1/4 = M40
NEC 334.28 and 342.28 are also still around and require field cut to be imperial threads unless you get special permission (90.4), which I might add is easy to get, or use adapter bushings.
300.1(C),342.28,334.28 are not really enforceable parts of the NEC anymore and I imagine it wont be long before they are re-worded to allow ISO sizes and thread pitches also.
I like the rest of us do more and more projects each year that involve some ISO metric conduit, fittings, boxes, fixtures and or panels.
Also there are plenty of LFMC fittings that come in standard ISO metric sizes like M1.5X20 or M1.5X25.
Cheers

Those metric conduits, fittings you are running into are already on equipment aren't they. Have you been running metric sized raceways as part of the premises wiring or are you running the typical NEMA sized raceways for that portion of the work?

Biggest issue is usually terminating a NEMA sized raceway or cable fitting into some equipment that only has ISO threaded hubs for entry ports.

 

[tortuga]

Those metric conduits, fittings you are running into are already on equipment aren't they. Have you been running metric sized raceways as part of the premises wiring or are you running the typical NEMA sized raceways for that portion of the work?

Biggest issue is usually terminating a NEMA sized raceway or cable fitting into some equipment that only has ISO threaded hubs for entry ports.

Yes we run into them already on equipment most recently some outdoor lighting assemblies we were installing. It came as a 'canned' product that we needed to assemble. We ran into an issue requiring longer fixture stems. At first glance it looked like regular IMC or rigid conduit, but nope M20X1.5.
Before that it was usually motor housings, controls and threaded fittings on equipment that we knew was coming from the EU.
Some of that came with short sections of metric sized raceway like running thread, and flex.
The only conduit we source locally is standard NEMA sizes, then we get all kinds of metric adapter bushings.

 

[tom baker]

I have installed a lot of European instrumentation, typically with M20X1.5 hubs, and its designed for cable, not conduit or flex. I would use a adapter to NPT and it got pretty busy where the connections were made.
Then I ran into a instrument with PG threads, I think it was a Siemens Mag Flow (orginally Danfoss, which is Danish). So another adapter!
I finally found a company in Colorado that was like the Toys R Us of the adapter world.

 

[kwired]

Yes we run into them already on equipment most recently some outdoor lighting assemblies we were installing. It came as a 'canned' product that we needed to assemble. We ran into an issue requiring longer fixture stems. At first glance it looked like regular IMC or rigid conduit, but nope M20X1.5.
Before that it was usually motor housings, controls and threaded fittings on equipment that we knew was coming from the EU.
Some of that came with short sections of metric sized raceway like running thread, and flex.
The only conduit we source locally is standard NEMA sizes, then we get all kinds of metric adapter bushings.

My point was in the US, I don't think hardly anyone is running those IEC sizes as premises wiring but mostly just needing adapters where they interconnect to IEC designed equipment and accessories.

 

[iceworm]

... I finally found a company in Colorado that was like the Toys R Us of the adapter world.

Tom -
It is okay to share