Im working on a lab project that has lab benches with receptacles (L14-20P) that connect to a ceiling service panel. Trying to determine the best way to power the receptacles from the ceiling service panel without providing separate connections for each receptacle back to a panelboard. Has anyone done this before?
Providing power to ceiling service panels serving receptacles
- Thread starter Kim W
- Start date
xformer
Senior Member
- Location
- Dallas, Tx
- Occupation
- Master Electrician
Does the Ceiling service panel contain OCPD'S?
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Welcome to the forum.
So, you mean several ceiling outlet boxes, each with a plate with one receptacles in it, right?
Whether you need individual OCP for each receptacle depends on the design parameters.
One circuit can certainly power more than one receptacle of the same voltage and current.
What kind of load are you anticipating for each bench, and how many simultaneously?
So, you mean several ceiling outlet boxes, each with a plate with one receptacles in it, right?
Whether you need individual OCP for each receptacle depends on the design parameters.
One circuit can certainly power more than one receptacle of the same voltage and current.
What kind of load are you anticipating for each bench, and how many simultaneously?
2 to 3 outlets in one ceiling panel. The ceiling panel has the opening for the L14-20P. Pictures attached. After reviewing the photo, I think I need to specify a ceiling mounted receptacle for each L14-20P? The overcurrent protection will be the breaker at the panel, correct? Each bench doesn't draw more than 800VA.
Attachments
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Looks like an O.R. ceiling panel; I see why you used the term.
You'll want a single twist-lock receptacle per outlet box, in my opinion.
You could wire two or three together, but I'd be tempted to give each its own circuit.
You'll want a single twist-lock receptacle per outlet box, in my opinion.
You could wire two or three together, but I'd be tempted to give each its own circuit.
This is helpful. Thanks. But there is one hiccup. If there are existing 60A/3P breakers and conduit fed to the OR ceiling panel location, how can that feed twist-lock receptacles that are 2P? I was thinking to provide 20A/2P breakers to feed the twist-lock receptacles, but that would mean demolishing the 60A/3P breakers and existing feeds at the ceiling panels. Unless things can be re-wired.