L6-20 Vs. L6-30 Socket/Plug: Differences And Features

The NEMA L6-30P is a three-prong locking male plug with a 30 amp, 250-volt rating. L6-20 is just a 20 Amp, 250 Volt locking female NEMA L6-20. That’s the main difference!

There are nickel-plated pins & terminals in the product to avoid corrosion. You’ll also notice that there’s a built-in power indication light.

This device has a maximum power output of 5000 watts. You’ll get a 5-year warranty coverage with this purchase. Let us check out the difference between L6-20 vs. L6-30.

Features L6-20 & L6-30 Adapter

L6-20 Vs. L6-30
  • The category of L6-20 and L6-30 is gen purpose wiring devices – gen purpose recept & surge pro.
  • Classification of L6-20 is industrial cord connectors whereas residential receptacles is for L6-30.
  • L6-20’s features are turn lock receptacle, single 3wire 20amp, and 250v.
  • L6-30 features are industrial-grade locking devices are designed for quick and easy installation and provide reliable performance in tough industrial environments.

What Will Be The Suitable Choice For You?

Three-wire grounded NEMA 6-20R (T-Slot) connection rated for 250VAC and 20A NEMA 6-20R (T-Slot). The horizontal and vertical blades of the 6-20P restrict it from being attached to receptacles with lesser amperage ratings. 6-20R (receptacle), on the other hand, has a “T” slot that can connect both a 6-20P (power) and a 6-15P (6-15P).

Large air conditioning systems and commercial ovens are two common examples of this technology. When you need to extend power from a fixed source like an adapter or power drop, you may use our NEMA 6-20 Extensions cable Series.

Smart-UPS T and Symmetra RM 2-6kVA UPS use the NEMA L6-30 as input. For 208 VAC, the NEMA L6-30 outlet is used in the Matrix-UPS, Good T, and single-phase Symmetra devices (Power Array, RM, LX).

The voltage level of 250V and current consumption of 30A make this a two-pole, three grounding connection.

It is a three-prong locking female connector with a 20-amp, 250-volt rating, designated as NEMA L6-20P by the industry. 3-prong, 30-amp female NEMA L6-30R connector with a 250-volt power rating.

The product’s nickel-plated connections and terminals prevent corrosion. A 5-year warranty protects your purchase. You’ll require Adobe® Acrobat® Reader to view PDF files.

Dielectric voltage withstands (Hi-Pot), polarisation, and continuity are verified on each cable. Make an L6-20 female socket, connection, or outlet fit a NEMA L6-30 male connector (30 amp, 250-volt twist lock).

Check whether the item requires more current than the receptacle can provide. Plug a device with a power plug on its charging cable to a locking L6-30R socket or outlets with an L6-30P power adapter.

As you can see, L6-20 and L6-30 both are plugs are good. You can choose according to your needs.

Frequently Asked Question (FAQ)

Is It Possible To Use A L6-20p In A L6-30r Outlet?

The L6-20P on your server will work with the L6-30R (30 amp locking plug) on an L6-30R receptacle. They seem to be of the same kind. The term “converter” was used, but we are unsure what kind of converter you mean. The receptacle in question should accept the plugin question.

Is A L6-20 Capable Of Drawing 30 Amps?

It’s safe to say that this guy is an expert. Your IT colleagues will be able to identify you as a professional if you have verified your account. Because the L6-20 is rated at 20 amps whereas the L6-30 is rated at 30 amps, the maximum current the L6-20 can draw via a 30 amp circuit is 20 amps. That’s why everything’s alright, as long as you don’t exceed the rated capacity.

What Else Does NEMA L6 Stand For?

There are locking connectors known as NEMA L6 utilized in circuits up to 250V in voltage. Nominal supply voltages of 240V or 208V, depending on phase arrangement, are designed for two-pole, three-wire L-L-G circuits.

What’s The Difference Between The L5-30P And L5-30R?

Instead of using a connection, you would use an L5-30R receptacle to insert into an outlet box. L5-30P (pluggable) is the female connector that fits into both.


When it comes to selecting electrical systems, plugs & plugs seem to be available in a range of layouts. Choosing the incorrect connections for a given application is more accessible when more alternatives are available.

You can ensure that your electrical systems like L6-20 vs. L6-30are adequately defined by collaborating with skilled design professionals.

Ralph Wade

Hey...Ralph is here! So, did you find this article useful? If so, please leave a comment and let me know. If not, please tell me how I can improve this article. Your feedback is always appreciated. Take love :)

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