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Using cable grommets for mains leads? Still legal?
Using cable grommets for mains leads? Still legal?
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Old 20th October 2017, 06:28 PM   #11
chrisb is offline chrisb
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For fixed connections with lighter gauge power cable, there's always the Heyco strain relief grommets. Being nylon, they're not susceptible to the same degradation as rubber, but they still also need a non circular panel opening . Strain Relief Bushings | Power Cord Strain

I think they were pretty much a standard in mainstream consumer electronics for decades, until the advent of the IEC.

There's a helluva range of sizes and shapes of IEC receptacles, my favorite is probably the small one with integral fuse holder - some models with switches are huge, and if cutting openings by hand can take a fair bit of time, particularly in steel panels.
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Old 21st October 2017, 12:05 AM   #12
phase is offline phase  United States
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This is what I just used on a 35 year old amp to replace the dried up lamp cord with 12-3 on an amp.

1497 Heyco | Mouser

Had to enlarge the hole in the case to .875 Dia.
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Old 23rd October 2017, 09:10 PM   #13
VenusFly is offline VenusFly  Australia
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Using cable grommets for mains leads? Still legal?
I went down to bunnings today and got myself some star washers and some M5 screws and bolts and some eyelets and some AU plugs and some fine files. Also got some Sutton tools Viper drill bits, 1mm-10mm with no gaps in the sizes.

I also ordered some stainless steel PG7 4-6mm waterproof cable grommets:
6 Pcs PG7 Metal Waterproof Locknut Stuffing Cable Gland Connector | eBay

Also ordered a step drill a week ago.
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Last edited by VenusFly; 23rd October 2017 at 09:19 PM.
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Old 23rd October 2017, 10:35 PM   #14
chrisb is offline chrisb
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Quote:
Originally Posted by phase View Post
This is what I just used on a 35 year old amp to replace the dried up lamp cord with 12-3 on an amp.

1497 Heyco | Mouser

Had to enlarge the hole in the case to .875 Dia.
Almost exactly the part I can remember as part of the Hafler kits of which I built literally hundreds for a local hifi shop back in the mid 70s- early 80's - even the 500 used them . Now, unlike the small preamps, that was not a product you'd want to drag around by the power cord. While 45lbs might not seen overkill in today's market, it was still a brute to build.


Click the image to open in full size.
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Old 24th October 2017, 01:26 PM   #15
Speedskater is offline Speedskater  United States
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I just posted this in the wrong thread:

On the power cord entry thing, do a search for:
power cord strain relief bushing
The ones that fold over on themselves should work.
I was in the hardware store and they had a box of assorted models
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Old 24th October 2017, 08:31 PM   #16
chrisb is offline chrisb
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Kevin - I think you're talking about the same thing as the Heycos noted above.
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