does anyone have UL943?

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wireguru

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Does anyone have UL943? Trying to figure out if 'booth stringers' (typically a 12/5 or 10/5 cable with outlet boxes every 10ft) that have GFIs in them need open neutral protection.
 
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I have 943-1986 IEEE guide for aging mechanisms and diagnostic procedures in evaluating electrical insulation systems.

Are you sure that is what you were looking for? The text doesn't seem to address the topic you need.
 
I have access to the following:

UL 943 - Standard for Safety for Ground-Fault Circuit-Interrupters

UL 943A - Practical Application Guidelines for Leakage Current Protection Devices

UL 943B - Standard for Appliance Leakage-Current Interrupters

UL 943C - Subject for Special Purpose Ground-Fault Circuit-Interrupters

I am not sure if I completely understand what you are looking for. In as far as I can tell, open neutral conditions are only detected on portable GFCI devices.

From UL 943A
1.11 OPEN NEUTRAL PROTECTION ? Consists of the opening of the line contacts of a protective device whereby the output potential is interrupted unless the circuit interrupter has sufficient input power to provide shock hazard protection.

1.6 GROUND-FAULT CIRCUIT-INTERRUPTER (GFCI) ? A general use device intended to be used in accordance with the National Electrical Code. The GFCI is a device whose function is to interrupt the electric circuit to a load when a fault current to ground exceeds 6 mA for Class A and 20 mA for Class B GFCIs. The trip current value is less than that required to operate the overcurrent protection device of the circuit. A GFCI is intended to be used only in a circuit that has a solidly grounded neutral conductor. GFCIs do not need a grounding conductor to operate properly. GFCIs are considered personal protection devices, and have the following features:

a) Portable GFCIs and receptacle-type GFCIs function with line polarity reversed as well as normal.
b) Portable GFCIs protect against open line neutrals.
c) GFCIs are required to provide grounded neutral protection.
d) GFCIs are manually resettable


3.8 Receptacle-type GFCIs and GFCI circuit breakers are intended for permanent installation only. Since they do not provide open neutral protection, they should not be field-installed on extension cords or in portable equipment.
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turns out the fine people at hubbell have something that will take care of what I need. Thanks for helping.
 
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