How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Glenn Your Own Question
Glenn
Glenn, Electrical Technician
Category: Electrical
Satisfied Customers: 2311
Experience:  over 30 years as a technician former journeyman electrician
281739
Type Your Electrical Question Here...
Glenn is online now
A new question is answered every 9 seconds

Wiring ten (10) 400 watt metal halide lights in shop. Supply

Resolved Question:

Wiring ten (10) 400 watt metal halide lights in shop. Supply is 240 volts single phase,wires are bare copper; white (common); black 120v; red 120 v. Marked wires from lights are: bare copper (ground); common; 120 volts; 208 volts; 240 volt; 277 volts. Do I hook bare copper to bare copper: common to common; black to [ 120v ]?; red to [240v]?; or do I just use one (1) red or black to 120v and run lights on 120 volts? How do I get them to work on 240 volts???
Submitted: 7 years ago.
Category: Electrical
Expert:  Glenn replied 7 years ago.
Thank you for asking your question on graphic
You are corresponding with Glenn - Your personal online "Electrical Consultant"

Hello
which 2 wires coming in are hooked to the 2 pole breaker ?
Customer: replied 7 years ago.
Red and black (they are the two hot wires)
Expert:  Glenn replied 7 years ago.
Thank you for asking your question on graphic
You are corresponding with Glenn - Your personal online "Electrical Consultant"

Ok then the red and black will connect to the light's 2 - 240 volt leads
All I saw on your post was common 120 are these 2 different wires ?
Customer: replied 7 years ago.
Maybe I didn't make it clear.From the lights there only one (1) wire or one (1) lead for each mark. One bare copper; One (1) marked common; One (1) marked 120 volts; One (1) marked 208 Volts; ONE (1) wire marked 240 Volts; and one wire marked 277 Volts. With only (1) wire of each voltage to hook to, what do I hook the two (2) hot wires to???. Yes, the common and 120 Volt are 2 different wires. There are a total of (1) wires or leads comming from each light. The lights are used and were wired before with 1 to bare copper, 1 to common, 1 to 277v... 3 phase I think?
Expert:  Glenn replied 7 years ago.

Thank you for asking your question on graphic
You are corresponding with Glenn - Your personal online "Electrical Consultant"

 

OK put the black wire on the one marked common put the red lead on the one marked 240 volt Put te bare ground to the ground green or bare wire

You will not be using the white wire cap it off

Glenn and other Electrical Specialists are ready to help you