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John Aquino Posted on Apr 05, 2019
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At a light it's showing 300v it should be 277?

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Marvin

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  • Master 85,242 Answers
  • Posted on Apr 05, 2019
Marvin
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Related Questions:

0helpful
2answers

480v/277v lighting is ok to use just one neutral when wiring 3 ph 480 to 277 lighting

This video shows it well. You need to balance loads but yet, one neutral is in the center, How the 3 phase math works 277 277 480
0helpful
1answer

Any wiring diagram for a 277 volt emergency lighting ballast

If you refer to emergency lighting tube with 277 volt, here is the wiring diagram for your reference:
5a7c1481-901b-44d5-a312-a8085352aad2.jpg
0helpful
1answer

How to wire a cooper Quadra Mark MH 277 Volt light

Quadra mark is commercial metal halide light
It appears the 208-240 480V model is different from 120, 277 or 347V model.
You cannot connect 277Volt light to 240Volt
These are two different things.
Commercial 277V has 1 hot leg and a neutral (very similar to residential 120V which also has 1 hot leg and neutral)
http://waterheatertimer.org/images/How-to-wire-outlets-14.jpg
While residential 240V has 2 hot legs
http://waterheatertimer.org/See-inside-main-breaker-box.html

Check rating label on light and see if it shows 120V in addition to 277V
If rating plate shows 120V, then it should work.

Residential 240Volt has 2 hot legs, each Hot leg measures 120V to ground
So you can use one Hot leg from the 240Volt breaker, and use ground wire to make 120Volt circuit.
Using ground wire to complete circuit in this manner is completely out of code and not recommended by any professional electrician. But it will work.

http://waterheatertimer.org/How-to-wire-3-phase-electric.html
http://www.electriciantalk.com/f5/

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

2helpful
1answer

Wiring diagram for time clock with photocell contacter and bypass switch

Copy following link for possible wiring diagrams showing photo eye and contactor:
http://waterheatertimer.org/How-to-wire-Cooper-277-pilot-light-switch.html#photo-eye

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Dec 15, 2011 • Home
0helpful
1answer

Hanging a outside light 277 volt 700 watt bulb. What size wire and breaker ic need

where are you putting this? on a commercial building? cause most homes do not have 277, if yes then use a 30 amp and # 10 wire
Oct 06, 2011 • Home
0helpful
1answer

I am trying to wire a cooper 277 swich to control an outlet. I am having a hard time getting it to work. I have followed the wiring diagram with no luck. I would like the Pilot to be on when the switch is...

Open following link for cooper 277 wiring illustration:
http://waterheatertimer.org/images/Cooper-277-pilot-400.jpg

Wired as shown in illustration, the pilot light and the Load will come on each time switch is turned on.
The illustration show Load is light bulb.
In your case, the Load will be an outlet instead of light bulb.
So the Load will have 2 wires. The black wire from switch connects to brass screw on outlet. The neutral connects to silver screw.
Bare ground wires connect to green screws.
0helpful
1answer

How to install 692 series light switch

P&S 692 is pilot light switch.
Pilot light requires neutral wire. Neutral wires are white wires twisted together and covered with wire nut located in back of electric box.
P&S 692 wires same as Cooper 277
http://waterheatertimer.org/images/Cooper-277-pilot-400.jpg
1helpful
1answer

The t104 comes new in box with timer jumpers to points 1 and 3 if i am wiring this to 277 i need to remove the jumper to post 3 and add a nuetral to the timer? correct?

277V instructions say:
Move small white motor wires to terminals A and 1
Connect 277 Neutral wire to terminal A
Connect 277 Hot to terminal 1
See illustration:
http://waterheatertimer.org/images/T-104-control-120V-Load-277-400.jpg

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