Twist lock pendant

Status
Not open for further replies.
W

wireday

Senior Member
Location
New England
Occupation
Master electrician
twist lock 20 amp120 volt receptacle on ceiling, cord with male twist lock plug down to table with female cord cap, Do I need anything for added strain relief at the ceiling?
 
That makes it permanent, Am I allowed to use the twist lock only? So it can be removed when not used? the area is used for multiple things.
 
They're called "Kellems grips" and other names. Take the pics to your supplier; Grainger has them, too.
 
I was trying to find the one for the cord cap like in Larrys picture, Im pretty sure my supply store will not have one,
 
You can also use grips that are supported separately like in the video at the link below, instead of putting tension on the electrical connections beween the cord cap and recepatacle:


If you wanted to quickly disconnect and reconnect such a separate grip from its support, you could use a snap hook or carabiner.
 
LarryFine said:
They're called "Kellems grips" and other names. Take the pics to your supplier; Grainger has them, too.
Click to expand...
I believe "Kellems" is what Hubbell brand calls them, though it one those names that used in the field as a universal name to some extent.
 
wireday said:
twist lock 20 amp120 volt receptacle on ceiling, cord with male twist lock plug down to table with female cord cap, Do I need anything for added strain relief at the ceiling?
Click to expand...
I'd say it maybe a judgmental thing as to whether any added strain relief is necessary. Situations of low ceiling, not so heavy cord, little chances of it being pulled on, etc. may not require additional strain relief.

The fact you already have a receptacle on the ceiling - you also need to consider whether the receptacle itself can handle any mechanical load imposed on it.
 
synchro said:
You can also use grips that are supported separately like in the video at the link below, instead of putting tension on the electrical connections beween the cord cap and recepatacle:


If you wanted to quickly disconnect and reconnect such a separate grip from its support, you could use a snap hook or carabiner.
Click to expand...

I personally would prefer this approach.

There might be an OSHA requirement to prevent mechanical load on the plug/receptacle terminals, but I'm not really sure of that. I'm going to simply state this as my design preference.

-Jon
 
For pendant outlets in manufacturing facilities, I always used bus drop cable and hardware. A “Sky-Ty” cable tension device up top to provide spring tension support and a FS style box on the lower end for devices. You can leave a loop in the hangar assembly at the top side, so that the cable drop could be relocated a faIr distance away, if required to accommodate production changes.

www.adalet.com

Sky-Tie - Bus Drop Cable Clamp

www.adalet.com

Wire Mesh Grips for Cable Connector Strain Relief | Remke | NSI Industries

Remke carries a large in-stock inventory of wire mesh cable grips. Call or click to order your Bus Drops, Single or Double Eye Cable Grips, deluxe cord grips & wide range strain relief grips.
www.remke.com www.remke.com


Appleton FD-2-75-A :: FD Device Box, 2-Gang, Type FD, 3/4 Inch, Aluminum :: Rexel USA

FD Device Box, 2-Gang, Type FD, 3/4 Inch, Aluminum, Box Depth: 2.69 Inch, Furnished With Internal Ground Screw, Dead-End, Cat #: FD-2-75-A, Mfr: Appleton
www.rexelusa.com www.rexelusa.com
 
I'd be in the camp that decided to use the strain relief on the cord itself to keep the weight off of the connector and receptacle at the ceiling.

JAP>
 
Status
Not open for further replies.
Top