On Wednesday, May 29, 2019 at 12:31:06 PM UTC-4, wrote:
On Wed, 29 May 2019 06:49:44 -0700 (PDT), trader_4
wrote:

On Wednesday, May 29, 2019 at 6:46:10 AM UTC-4, Marius Josipovic wrote:
On 5/28/19 4:18 PM, Scott Lurndal wrote:
writes:
On Tue, 28 May 2019 11:24:04 -0400, Clare Snyder
wrote:

On Tue, 28 May 2019 06:08:29 -0400, bull****
wrote:

On 5/28/19 2:20 AM, Clare Snyder wrote:
There are no breakers or fuses rated
at less than 15 amps approved for residential wiring installations.
More bull****!

https://www.homedepot.com/p/Siemens-...Q110/206632124
None approved for Canadian installation.

American code does not seem to reference 10 amp breakers as
acceptable. Check NEC code reference 210.3 with the following...

"Branch circuit ratings for other than individual circuits must be
15A, 20A, 30A, 40A, or 50A."

This MAY allow for a 10 amp breaker to protect a particular hard
wired/exclusive circuit such as a dish-washer or garburetor -
Generally speaking "device protection" breakers, as differentiated
from "circuit protection" breakers are installed in or at the
protected device rather than in the panel.

Seimens ans Square D APPEAR to be the only source for 10 amp breakers
and they are not (as far as I can determine) available in Canada. Not
available from my electrical wholesalers.
10 amp breakers are specifically for alarm circuits, not general
lighting circuits.
And for monitoring circuits (e.g. on solar panal arrays).

They are listed for the panel so I see nothing dangerous about using them on any circuit you like.

Assuming everything else is done right, they would not be dangerous,
but they would not be code compliant if used for uses like receptacles
or general lighting.

That is an interesting question. As long as the "ampacity" (14ga or
larger wire) complied, I am not sure if it is a violation.


I was assuming Clare's cite was correct:


"American code does not seem to reference 10 amp breakers as
acceptable. Check NEC code reference 210.3 with the following...
"Branch circuit ratings for other than individual circuits must be
15A, 20A, 30A, 40A, or 50A."



But I just looked in the 2017 edition and 210.3 doesn't say that,
it's about something totally different, so IDK what edition he got
that from. I do see where they say 210.23 (A) A 15 or 20A branch
circuit shall be permitted to supply lighting or other utilization
eqpt, or a combination of both..... It's all irrelevant anyway,
really. Does Romex exist in less than 14g? I'll bet a 10A breaker
costs as much or more than a 15A too.

The original question about ten lights on 18g, I was thinking it might
be a string of outdoor lights that you could put a 100W bulb in or
a string of Edison lights. But others had a more common case, a
chandelier that has ten of the smaller bulbs, 60W max and it's very
common to see 18g wiring on those, no issue.