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-   -   Am I allowed to wire a 60a subpanel as 120v only? (https://www.askmehelpdesk.com/showthread.php?t=528138)

  • Nov 22, 2010, 07:34 AM
    kkirkk
    Am I allowed to wire a 60a subpanel as 120v only?
    Am I allowed to wire a 60a subpanel as 120v only? Two circuits, 15a and 20a will never need 240v. 40 feet from main panel use #6/2 AL? Can I add a ground bar to a Siemens EO2040ML1060 panel?
  • Nov 22, 2010, 08:38 AM
    tkrussell

    A 120/240 volt panelboard cannot be used for 120 volt only.

    A 120/240 volt systems must be at all panels, so #6-3 with ground cable will be needed.

    Yes, a ground bar can be added to any panel.
  • Nov 22, 2010, 03:46 PM
    ma0641
    Look at the data plate on the box. It my say 120V 2 wire OR 240 Volt 3 wire. Just remember to identify the Neutral since a 6/2 will only have black feed lines. I'd also mark the box 120Volt only.
  • Nov 22, 2010, 03:50 PM
    stanfortyman
    Quote:

    Originally Posted by ma0641 View Post
    Just remember to identify the Neutral since a 6/2 will only have black feed lines.

    ??

    What kind of 6/2 are you buying?
  • Nov 22, 2010, 04:47 PM
    kkirkk
    Comment on ma0641's post
    It says 120/240v- 1 phase 3 wire and also 208/120v- 1 phase 3 wire. It has 2 connectors for hot independent of each other; does that mean I could use a 10/3 giving 30a to each terminal with a 15a off one and 20a off the other? What size ground?
  • Nov 22, 2010, 07:20 PM
    ma0641
    Comment on stanfortyman's post
    My 70 year old brain was in a resting phase. I meant that in a 240 there is no neutral and SER has 2 black not 10/2
  • Nov 22, 2010, 07:23 PM
    ma0641
    Comment on ma0641's post
    See TK's answer.
  • Nov 23, 2010, 04:53 AM
    kkirkk
    Comment on stanfortyman's post
    I already had the 6/2 NM left over and wanted to use it if I did not have to wire it 240. I know I would have had to label one wire as the neutral.
    Thanks all, I'll buy 6/3 and go 240.

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