Here are the drawings provided by the manufacturer. So the advice I have is #8 wire 40 amp breaker and nothing on the recommended plug. Guys you have no idea how much I appreciate your input.
Regards

 

That is all well and good, but first, you need to find out if the N of your supply is actually bonded to earth ground.
Second, what is the reason for an outlet (plug)?
Is this equipment intended to be portable?
For large fitted in-place equipment, it is customary to hard wire in. As shown by the manuf. DWG.
Are you qualified to install it?
Max.

 

Max not to hurt your feeling or nothing but in tn you bond the nerutal to the ground . I been wiring for over 30 years there

 

But he still needs a pe ground

 

Max not to hurt your feeling or nothing but in tn you bond the nerutal to the ground . I been wiring for over 30 years there

I thought that is what I was saying all the time?
I can see your 30yrs and raise you 30, (but not in TN)
Max.

 

You would use this and plug above to make a 6 foot cord.

 

I question why he would need a plug for disconnect if it a permanent fixture appliance?
Especially in light of the contactor recomended.
Max.

 

That's in one state I wired in 3 states

It is a commercial air fryer. 50% of our customers are fine with hard wire. Some of them require a plug

 

Mine was for two countries.
Max.

 

Good deal Im about sure I've wired up about anything made for a bunch of countries LOL

 

Here my last MDP

 

That is all well and good, but first, you need to find out if the N of your supply is actually bonded to earth ground.
Second, what is the reason for an outlet (plug)?
Is this equipment intended to be portable?
For large fitted in-place equipment, it is customary to hard wire in. As shown by the manuf. DWG.
Are you qualified to install it?
Max.

Some of the Units need to be moved for cleaning, it is in a kitchen.

 

But he still needs a pe ground

What is the amp rating on the plug?

 

Some of the Units need to be moved for cleaning, it is in a kitchen.

I have installed several so far and that is why the question came up because I need to install several units on a military base and they must be able to be unplugged.
Thanks

 

I have installed several so far and that is why the question came up because I need to install several units on a military base and they must be able to be unplugged.
Thanks

Visit a local electrical supplier and explain you need 5 pin 208v 3ph 30a-40a disconnect plug and socket they should be able to supply you with the suitable fittings, if at all reputable.
Max.

 

CED will have them

 

I question why he would need a plug for disconnect if it a permanent fixture appliance?
Especially in light of the contactor recomended.
Max.

NOTHING is permanent! And at least in my area things need to be able to be disconnected and moved away from where they are used. Both gas appliances and electrical appliances. From deep fryers to ice-cream machines. That is my restaurant business client's situation. And it saves having to have a service cut-off switch as well. Just unplug the machine and keep the plug in sight while you work.

 

NOTHING is permanent!

There are plenty of examples where equipment is wired in place with just a switched disconnect.
It is done all the time in the Industrial area I work in.

 

No one mentioned how far it's away from the breaker panel?

Since it's commercial, the NEC will see it as a continuous load. Wiring would be rated at 1/0.8 FLA, I believe with no more than a 3% voltage drop.

FLA on 3-phase means what? 33A per phase?

You might want a NEMA L21-50 from this https://www.stayonline.com/product-resources/nema-locking-reference-chart.asp chart.

So, your designing for 41.25 A, then a 3% drop over the distance to the breaker panel to select minimum wire size. You then might want to design the wiring for 80% of 50A at the distance required. 80% of 50 is 40A, so it does fit the bill. 33 i less than 40A. Size the wiring for 40A, possibly 50, I think.

Sizing the wiring for a 3% maximum voltage drop at 80% capacity is correct for a continuous load. Commercial equipment in a restauraunt is considered continuous.

I could be wrong, but I should be close. On another forum which I was a moderator on, I did pretty well, but 3 phase didn;t show up.

Hard wiring can save you money, but can bite you when you upgrade.

We had equipment which was about 50 A 3 phase and used a non-twist lock receptacle. At 90 A 3 phase we used a local disconnect and hardwired and at 200 A 3 phase, the equipment had it's own disconnect. The 50 and 90 A equipment needed a key to turn on.

How do you handle lock-out, tag out?

 

No one mentioned how far it's away from the breaker panel?

Since it's commercial, the NEC will see it as a continuous load. Wiring would be rated at 1/0.8 FLA, I believe with no more than a 3% voltage drop.

FLA on 3-phase means what? 33A per phase?

You might want a NEMA L21-50 from this https://www.stayonline.com/product-resources/nema-locking-reference-chart.asp chart.

So, your designing for 41.25 A, then a 3% drop over the distance to the breaker panel to select minimum wire size. You then might want to design the wiring for 80% of 50A at the distance required. 80% of 50 is 40A, so it does fit the bill. 33 i less than 40A. Size the wiring for 40A, possibly 50, I think.

Sizing the wiring for a 3% maximum voltage drop at 80% capacity is correct for a continuous load. Commercial equipment in a restauraunt is considered continuous.

I could be wrong, but I should be close. On another forum which I was a moderator on, I did pretty well, but 3 phase didn;t show up.

Hard wiring can save you money, but can bite you when you upgrade.

We had equipment which was about 50 A 3 phase and used a non-twist lock receptacle. At 90 A 3 phase we used a local disconnect and hardwired and at 200 A 3 phase, the equipment had it's own disconnect. The 50 and 90 A equipment needed a key to turn on.

How do you handle lock-out, tag out?

The LOTO Will be on the customer.