Ask him to reference a clause in an applicable standard.
Do you know if spacings from N to PE circuit and to dead metal have been
evaluated for 240V ? (in the event it gets cross wired during
installation)
___
Do not disagree in principal, but the Type Tests and construction requirements
of L/N/PE terminals vs L1/L2/N terminals can vary with the scoped product
safety standards and building code.
Brian
From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com]
Sent: Tuesday, December 15, 2015
Recently a customer has corrected the markings of terminal blocks inside of an
industrial control panel my company built. An NRTL has evaluated the system
and says the terminal markings for Line (L), Neutral (N), and Ground (G) are
incorrect for a 220VAC input condition. Their evaluation says
Hi John:
If you can, I would include both markings,
90-230 volts: L, N, PE;
220 volts: L1, L2, PE (North America).
(I am assuming that the equipment ratings marked
on the equipment are wide-range, e.g., 90-240
volts.)
The NRTL should not object to a dual
I've used a lot of small listed/certified DC power supplies that are wide-range
voltage input but have the terminals marked L, N, PE. These could also be
wired to L1 -L2 or L1-N in the US or L1-N in Europe.
-Dave
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Tuesday, December 15, 2015 2:43
Being familiar with 60950-1 I can tell you there are no Canadian/USA
deviations on markings. I would definitely request the NRTL to provide the
clauses reference in the standard and to share their Design manual which should
help to resolve the issue.
Rodney Davis
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