There used to be a chart – supplied years ago – that listed all the metals and
showed what was compatible – or not compatible with different metals.
Sadly I can’t seem to find it, but one of the older guys might still have a
copy of that chart.
Cheers – John Veix, N.Z.
From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On Behalf Of
Christopher Warfel via RE-wrenches
Sent: Friday, 7 October 2022 2:42 am
To: re-wrenches@lists.re-wrenches.org
Cc: Christopher Warfel <cwar...@entech-engineering.com>
Subject: Re: [RE-wrenches] Butt End Connector Warning
You cannot use them with Al. The connection will disintegrate over time. I have
pictures somewhere of mismatching rail bonding connectors that were gone in a
year. Chris
On 10/6/2022 9:32 AM, Drake Chamberlin via RE-wrenches wrote:
Our electrical supplier seamlessly transitioned from crimp on butt end
connectors, that were listed for CU and AL, to unmarked ones that were approved
for copper only.
I became concerned since there was no marking. Calling two electrical
suppliers, the guys at the counter had to look up the device to learn that they
were listed for copper only. Talking to one of the counter guys, he agreed that
electricians were probably using these for aluminum.
Since the barrels will be insulated, it is not likely that inspectors will see
them. The connectors are made of coated copper. I wonder how much of a problem
this will be.
Drake
--
Christopher Warfel
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978
<http://entech-engineering.com/>
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