Things to consider when DIY installing a wall charger / outlet

[Sweetwater]

wow, so even like other side of garage is no good?

hmm. TIL

Your OK. The code states " within 50' or insight of"

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[GoGoGadgetMachE]

Read some tips on the EV charging.

National Electrical Code Tips: Article 625, Electric Vehicle ...
www.codebookcity.com › codearticles › nec › necarticl...

of course there's no chance I'm installing a 60A charger any time soon but still neat to know ?

 

[Sweetwater]

of course there's no chance I'm installing a 60A charger any time soon but still neat to know ?

It is NOT the 60 amp charger that requires us to install disconnect.
IT IS THE 240 VOLTS !! Yes the code will confuse people but is there
to protect us. Hard at times to read and understand but you must
read every word and add NOTHING . It is what it is and we must
never assume.

 

[CHeil402]

It is NOT the 60 amp charger that requires us to install disconnect.
IT IS THE 240 VOLTS !! Yes the code will confuse people but is there
to protect us. Hard at times to read and understand but you must
read every word and add NOTHING . It is what it is and we must
never assume.

No, it states "line to ground" which is only 120 V for US residential split phase service. So not needed.

 

[GoGoGadgetMachE]

It is NOT the 60 amp charger that requires us to install disconnect.
IT IS THE 240 VOLTS !! Yes the code will confuse people but is there
to protect us. Hard at times to read and understand but you must
read every word and add NOTHING . It is what it is and we must
never assume.

ok. I paid an electrician to do the work so I wouldn't have to worry about such things

 

[timbop]

If you have your charger far from your circuit breaker, out of line-of-sight, a safety disconnect might be nice to have.

In my state we use these disconnects on 5-ton AC installations.

For $10, and a bit of wire, it is cheap insurance.

Disconnect

You can also put a lockout on the breaker, which is what I did for my electric hot water heater.

The reason for this is to prevent somebody helpful who doesn't know you're working on the equipment at the other end of the breaker from seeing the breaker tripped and deciding to "fix it" by turning the breaker back on.

 

[Gimme_my_MME]

You can also put a lockout on the breaker, which is what I did for my electric hot water heater.

The reason for this is to prevent somebody helpful who doesn't know you're working on the equipment at the other end of the breaker from seeing the breaker tripped and deciding to "fix it" by turning the breaker back on.

Lock out Tag out

 

[sockmeister]

Thanks for the info. What I gathered from all of this is that none of us will need the interrupt with our 240v 50-60A circuits.
And they're only 120V messured to ground, as someone else mentioned. So we're good.

 

[sockmeister]

Read some tips on the EV charging.

National Electrical Code Tips: Article 625, Electric Vehicle ...
www.codebookcity.com › codearticles › nec › necarticl...

Thanks, but I had a problem with whomever wrote this article the minute I read the first sentence, which makes a lot of false assumptions:

Coal-powered cars, commonly called "EV" or electric vehicles, are the dirtiest, most energy-consuming form of personal transportation in existence today.

I'm on 100% renewable wind/solar energy at home via NextEra. So... No.

And even if it was 100% coal powered energy, an EV would still be cleaner than a gas car over its lifespan. It would just take longer to recoup. Jason Fenske made a video explaining the math last year.

 

[Sweetwater]

No, it states "line to ground" which is only 120 V for US residential split phase service. So not needed.

It does not STATE line to ground. The device is 240 volts. I spoke with
Inspection Dept yesterday . He stated that it is rated 240 volts and all
Level 2 chargers must have a disconnect. He also stated that is the way
it reads in NEC. I think people should check with their own inspect dept
in their area. Get your info from the inspector . We here can not interpret
the code correctly. We must stop guessing and state incorrect installs.
You will find this is the way it reads.

ev5pt3.pdf

 

[sockmeister]

It does not STATE line to ground. The device is 240 volts. I spoke with
Inspection Dept yesterday . He stated that it is rated 240 volts and all
Level 2 chargers must have a disconnect. He also stated that is the way
it reads in NEC. I think people should check with their own inspect dept
in their area. Get your info from the inspector . We here can not interpret
the code correctly. We must stop guessing and state incorrect installs.
You will find this is the way it reads.

ev5pt3.pdf

It's pretty clear:

If the charger is 60A or larger or more than 150V (to ground), you must install a disconnect in a readily accessible location. It must be capable of being locked in the open position [625.43].

It states 150V *to ground*. Each leg of a residential 240V outlet is 120V to ground. They are only 240V relative to each other.

Level 2 chargers are fine without it. Would be happy to hear from an electrician.

 

[CHeil402]

It does not STATE line to ground. The device is 240 volts. I spoke with
Inspection Dept yesterday . He stated that it is rated 240 volts and all
Level 2 chargers must have a disconnect. He also stated that is the way
it reads in NEC. I think people should check with their own inspect dept
in their area. Get your info from the inspector . We here can not interpret
the code correctly. We must stop guessing and state incorrect installs.
You will find this is the way it reads.

ev5pt3.pdf

Right, it states "150 volts to ground". Based on residential service, nowhere in a 240 volt outlet can you measure more than 120 volts to ground. I'm not making assumptions or guessing anything.

I'm a licensed electrical engineer, see an explanation I posted before about US service and 240 volt outlets for reference:

https://www.macheforum.com/site/thr...aration-and-installing-charger.610/post-56290

 

[generaltso]

It does not STATE line to ground.

As others have stated, it very clearly does.

 

[Sweetwater]

Right, it states "150 volts to ground". Based on residential service, nowhere in a 240 volt outlet can you measure more than 120 volts to ground. I'm not making assumptions or guessing anything.

I'm a licensed electrical engineer, see an explanation I posted before about US service and 240 volt outlets for reference:

https://www.macheforum.com/site/thr...aration-and-installing-charger.610/post-56290

I am a Licensed Electrician retired. I do not agree with you. Neither you or I can
always be right. So when you draw your electric prints do you state :
"I want two 120 volts lines at this location"
"I want one 240 volt line at this location"
Which statement is correct ?
I have made the call to Inspect. Dept. I am done trying to explain as I have
contacted the proper people. My 50 amp 6 awg 240 volt charger circuit
will have a disconnect.

 

[generaltso]

My 50 amp 6 awg 240 volt charger circuit will have a disconnect.

Go for it. It certainly won’t hurt to have a disconnect. But it’s clearly not required based on the evidence that you yourself provided. It clearly states 150v to ground. Since you’re a retired electrician, I’m sure you know that you can’t get over 150v to ground with a split phase 240v outlet.

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