Terminal Blocks for Factory or Field Wiring. How to know what you’re getting –
Terminal Blocks come in many different forms. They’re rated for difference wire sizes, voltages and ampacities, temperatures, short circuit ratings, and more.
Many don’t know, however, UL also rates them for Factory or Field wiring. Terminal Blocks rated for Factory wiring only, cannot be used for wires to be installed in the field. So, if you’re at UL with your product that has a Terminal Block intended to be wired in the field, you better make sure you pick the right one.
Picking the right one –
UL designates Terminal Blocks for Factory or Field Wiring. See below from UL’s Guide Card on Terminal Blocks -
XCFR2.GuideInfo - Terminal Blocks - Component
Factory and/or Field Wiring (FW) — These terminal blocks are rated for: Code 1, factory wiring only, or Code 2, both factory and field wiring. The suitability of the connections (including spacings between factory connectors) shall be determined in the end-use application.
Unless noted with a "CA 4" in the last column, a terminal connector suitable for field wiring has been investigated to ANSI/UL 486A-486B, "Wire Connectors."
When Code 1 and Code 2 terminals are intermixed on the same terminal block, both codes will be used with suitable indication for which terminal each code applies, i.e., 1/2.
When looking for the right Terminal Block, look in the FW column on the companies UL Recognition card.
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|
||||||||
|
Series |
Wire |
Wire |
|
TQ |
|
|
|
|
|
+FP |
14 |
Cu |
1 |
— |
300 |
20 |
C |
2(130),# |
|
+FS |
14 |
Cu |
1 |
— |
300 |
20 |
C |
2(130),# |
|
@FP-XX-25A |
12 |
Cu |
1 |
— |
300 |
25 |
C |
2(130),# |
|
@FS-XX-25A |
12 |
Cu |
1 |
— |
300 |
25 |
C |
2(130),# |
|
+D exept for D-11 |
4-18 SOL/STR |
Cu |
2 |
20 |
250/300 |
85 |
B/C |
2(130),# |
|
(2) 12-16 STR |
Cu |
2 |
20 |
250/300 |
35 |
B/C |
2(130),# |
|
|
(2) 18 SOL/STR |
Cu |
2 |
20 |
250/300 |
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